Mi línea de investigación consiste en la reconstrucción de los efectos de la variabilidad climática ocurrida durante el pasado geológico (en especial Cuaternario Tardío) sobre los ecosistemas, no sólo de regiones áridas del norte de México, sino también en otras zonas con diferentes condiciones climáticas y geológicas como la Cuenca de México, la parte occidental del país y la Península de Yucatán, mediante la aplicación de herramientas geoquímicas en colaboración con otros investigadores y jóvenes académicos. Ello también me ha permitido contribuir en proyectos nacionales e internacionales incluso de otras áreas y especialidades, abarcando rubros como la evaluación de perturbaciones antrópicas en México, India, Malasia, Sudáfrica y varios países de Sudamérica. Dentro de mi grupo de investigación, junto con mis colegas y alumnos graduados de todos los niveles, incluyendo de doctorado, he reconstruido con éxito la variabilidad climática de una región carente de datos, pero climatológicamente importante ubicada en el norte de México, mediante el empleo de una variedad de herramientas geoquímicas aplicadas por primera vez en México. Nuestro trabajo ha llenado una gran brecha en el conocimiento sobre la historia paleoclimática de las regiones extremadamente áridas de México. Distribución espacial de los nuevos registros sobre el territorio mexicano ha proporcionado nueva información sobre los patrones de precipitación y sequía, mediante la reconstrucción de la cobertura geográfica de las precipitaciones de invierno y verano-otoño recibidas a través de la corriente de chorro, el monzón norteamericano y las tormentas tropicales. Los nuevos resultados tienen implicaciones importantes para comprender las respuestas del sistema climático actual y futuro, así como la respuesta de la dinámica de la humedad proveniente de los océanos Atlántico y Pacífico al calentamiento global, mejorando la comprensión de los mecanismos de forzamiento externo como la atmósfera, los océanos y la superficie terrestre sobre los cambios hidrológicos. Soy editor asociado de la revista geocientífica más antigua de Alemania “Geochemistry” (anteriormente Chemie der Erde-Geochemistry) de la editorial Elsevier. He coeditado el libro “The Holocene and Anthropocene Environmental History of Mexico” y el volumen especial de Boletín de la Sociedad Geológica Mexicana sobre “Paleoclimas del Cuaternario en Ambientes Tropicales y Subtropicales”. Fui unos de los autores lideres del “Reporte Mexicano de Cambio Climático, grupo I” y, en 2016, recibí el Reconocimiento Distinción Universidad Nacional para Jóvenes Académicos en el área de Investigación en Ciencias Naturales. Reviso continuamente artículos para revistas de alto prestigio e impacto y proyectos de investigación de organizaciones nacionales e internacionales. Dentro de las áreas de divulgación y difusión, he impartido conferencias, participado en programas de radio y televisión y otorgado entrevistas en medios impresos y electrónicos con temas afines al cambio climático y calentamiento global. Las otras líneas de mi interés son procedencia y diagénesis de depósito sedimentario, hidroquímicas, depósito de tsunami y incendio de turbera. Recientemente, he incursionado al tema del efecto de la cuarentena por el Covid-19 sobre el medioambiente.
Departamento: Departamento de Dinámica Terrestre Superficial
Dirección: Instituto de Geología, Circuito de la Investigación Científica s/n, Ciudad Universitaria, Del. Coyoacan, C.P. 04510, Ciudad de México, México
Email: roy@geologia.unam.mx
Teléfono: +52 (55) 55-56224263 Ext. 112
Fax: 55-56224317
Dr. rer. nat (Doktors der Naturwissenschften), Institut für Mineralogie und Geochemie, Universitaet Karlsruhe
M.Tech (Engineering Geology), Department of Civil Engineering, Indian Institute of Technology, Kanpur
M.Sc. (Applied Geology), Department of Earth Sciences, Indian Institute of Technology, Roorkee
Paleoclimatología
Medio ambiente de antropoceno
Geoquímica
Akhila V. Nath, Selvam Sekar, Priyadarsi D. Roy, Jesuraja Kamaraj, Saurabh Shukla, Ramsha Khan, Drinking and irrigation quality and pollution assessments of the groundwater resources from Alappuzha in Kerala (India) through an integrated approach using WQI and GIS, Journal of Geochemical Exploration, marzo de 2024; 258(107391)
Ricardo Urrutia-Goyes, J.S. Sakthi, D.M. Rivera-Rivera, T. Thena, Priyadarsi D. Roy, M.P. Jonathan, Insights on trace metal enrichments in tourists beaches of Santa Elena Province, Ecuador, Regional Studies in Marine Science, marzo de 2024; 73(103452)
Priyadarsi D. Roy, Logesh Natarajan, Lakshumanan Chokkalingam, Changes in Lu/Lc and vegetation around the Acapulco Bay at southwest Mexico from the hurricane Otis (October 25, 2023), Jorunal of South American Earth Sciences, febrero de 2024; 136(104819)
Priyadarsi D. Roy, Oscar Agesandro García-Arriola, Sekar Selvam, Seasonality of hydrogeochemical evolutions and isotopic variabilities (δ18O, δ2H and d-excess) in the surface water as well as groundwater from tropical central-south Mexico, Environmental Research, febrero de 2024; 250(118529)
Mu. Ramkumar, R. Nagarajan, K. J. Juni, A. Manobalaji, K. Balasubramani, Priyadarsi D. Roy, K. Kumaraswamy, A. L. Fathima, Athira Pramod, R. Sharveen, S. Abdul Rahman, N. A. Siddiqui, D. Menier, Rajveer Sharma, Tectono-climatic and depositional environmental controls on the Neolithic habitation sites, Vaigai River Basin, Southern India, Geological Journal, enero de 2024
Prabhakaran Moorthy, Sridhar Sundaramoorthy, Priyadarsi D. Roy, Tune Usha, Sisir Kumar Dash, Muthusankar Gowrappan & Lakshumanan Chokklingam, Evaluation of spatial and temporal dynamics of seawater intrusion in coastal aquifers of southeast India: insights from hydrochemical facies analysis, Environmental Monitoring and Assessment, enero de 2024; 196(179)
Selvam, S., Nath, A. V., Roy, P. D., Jesuraja, K., & Muthukumar, P., Evaluation of groundwater for nitrate and fluoride in Alappuzha region from the southwestern coast of India and associated health risks. Environmental Research,, Environmental Research, noviembre de 2023; 236, 116791
Roy, P. D., García-Arriola, O. A., Selvam, S., Vargas-Martínez, I. G., & Sanchez Zavala, J. L., Evaluation of water from Lake Coatetelco in central-south Mexico and surrounding groundwater wells for drinking and irrigation, and the possible health risks, Environmental Science and Pollution Research, octubre de 2023; 30, 115430–115447
Kutralam-Muniasamy, G., Shruti, V. C., Pérez-Guevara, F., Roy, P. D., & Martínez, I. E. , Consumption of commercially sold dried fish snack “Charales” contaminated with microplastics in Mexico. Environmental Pollution, ., Environmental Pollution, septiembre de 2023; 332, 121961
Roy, P. D., Natarajan, L., García-Arriola, O. A., & Chokkalingam, L. , Anthropogenic impact in and around Lake Coatetelco (south-central Mexico) from land use and landcover analysis between 1980 and 2020 CE. , Jorunal of South American Earth Sciences, septiembre de 2023; 129, 104495
Quiroz-Jiménez, J. D., Roy, P. D., Hernandez, C. I. C., & Sanjuán, A. I., Impacto del Fenómeno de El Niño en la precipitación y agricultura del estado de Hidalgo, México, Revista de Estudios Regionales Nueva Época, agosto de 2023; 1, 81-102
Kutralam-Muniasamy, G., Shruti, V. C., Pérez-Guevara, F., Roy, P. D., & Elizalde-Martínez, I., Common laboratory reagents: Are they a double-edged sword in microplastics research?, Science of the Total Environment, junio de 2023; 875, 162610
George, A. K., Gandhi, S., Perumal, M., Roy, P. D., Jothimani, M., & Sekar, S. , Possible Zones of Submarine Groundwater Discharge (SGD) and Seawater Intrusion (SWI) along the West Coast of Kanyakumari, India., Journal of Chemistry, mayo de 2023; 223, 6687308
V.C.Shruti, Gurusamy Kutralam-Muniasamy, Fermín Pérez-Guevara, Priyadarsi D. Roy, An assessment of higher-value recyclable wastes in Mexico City households using a novel waste collector citizen science approach, Science of the Total Environment, marzo de 2023; 863(161024)
V.C.Shruti, Gurusamy Kutralam-Muniasamy, Fermín Pérez-Guevara, Priyadarsi D.Roy, I.Elizalde-Martínez, First evidence of microplastic contamination in ready-to-use packaged food ice cubes, Environmental Pollution, febrero de 2023; 318(120905)
Gurusamy Kutralam-Muniasamy,V.C.Shruti, Fermín Pérez-Guevara, Priyadarsi D. Roy, Microplastic diagnostics in humans: “The 3Ps” Progress, problems, and prospects, Science of the Total Environment, enero de 2023; 856(159164)
Kannan, G., Roy, P. D., Sundar, S., Usha, T., Gowrappan, M., V, P. K., Periyasamy, R., Jonathan, M.P. & Chokkalingam, L., Pollution Assessment with Respect to Five Heavy Metals in Urban Soils of the Greater Chennai Region, Southeast Coast of India. , Water Air and Soil Pollution, enero de 2023; 234, 63
Madhavan, S., Kolanuvada, S. R., Sampath, V., Roy, P. D., Moorthy, P., Natarajan, L., & Chokkalingam, L., Assessment of groundwater vulnerability using water quality index and solute transport model in Poiney sub-basin of south India. , Environmental Monitoring and Assessment, enero de 2023; 195, 272
Nagarajan, R., Sharveen, R., Ali, A., Kessler, F. L., Jong, J., Roy, P. D., & Srinivasalu, S. , Paragenetic conditions of concretions in the Neogene clastic sediments of NW Borneo: Evidence from morphological, petrographic, mineralogical and geochemical data., JOURNAL OF GEOINTERFACE, diciembre de 2022; 1(2), 6-20
Fermín Pérez-Guevara, Priyadarsi D.Roy, I.Elizalde-Martínez, Gurusamy Kutralam-Muniasamy, V.C. Shruti, Human exposure to microplastics from urban decentralized pay-to-fetch drinking-water refill kiosks, Science of the Total Environment, noviembre de 2022; 848(157722)
V.C.Shruti, Fermín Pérez-Guevara, Priyadarsi D. Roy, Gurusamy Kutralam-Muniasamy, Strengthening citizen science partnerships with frontline sanitation personnel to study and tackle plastic pollution, Environmental Science and Policy, noviembre de 2022; 137, 70-74
V.C.Shruti, Gurusamy Kutralam-Muniasamy, Fermín Pérez-Guevara, Priyadarsi D. Roy, I. Elizalde Martínez, Occurrence and characteristics of atmospheric microplastics in Mexico City, Science of the Total Environment, noviembre de 2022; 847(157601)
Gopinathan P, Priyadarsi Roy, Subramani T & Karunanidhi D , Detection of iron-bearing mineral assemblages in Nainarmalai granulite region, south India, based on satellite image processing and geochemical anomalies, Environmental Monitoring and Assessment, octubre de 2022; 194(866)
Jonathan Silvino Cabrera-Hernández, Marisol Montellano-Ballesteros, Priyadarsi D.Roy, David E.Fastovsky, Eggshells assemblages and stable isotope composition in the Upper Cretaceous (Campanian) El Gallo Formation of Baja California, Mexico: Paleoenvironmental inferences, Cretaceous Research, octubre de 2022; 138, 105265
Selvam Sekar, Muthukumar Perumal, Priyadarsi Debajyoti Roy, Moorthy Ganapathy, Venkatramanan Senapathi, Sang Yong Chung, Hussam Eldin Elzain, Manimaran Duraisamy & Jesuraja Kamaraj , A review on global status of fresh and saline groundwater discharge into the ocean, Environmental Monitoring and Assessment, octubre de 2022; 194(915)
S.Selvam, P.Muthukumar, Priyadarsi D.Roy, S.Venkatramanan, S.Y.Chung, Hussam Eldin Elzain, S.Muthusamy, K.Jesurajaa, Submarine groundwater discharge and associated nutrient influx in surroundings of the estuary region at Gulf of Mannar coast, Indian Ocean, Chemosphere, octubre de 2022; 305, 135271
M. P. Jonathan, P. Godwyn-Paulson, P. F. Rodríguez-Espinosa & P. D. Roy , Tsunami waves across the Pacific ring nations from January 15, 2022, underwater volcanic explosion at “The Hunga-Tonga-Hunga-Ha’apai” isles, Natural Hazards, septiembre de 2022
V.C.Shruti, Gurusamy Kutralam-Muniasamy, Fermín Pérez-Guevara, Priyadarsi D. Roy, I. Elizalde-Martínez, Free, but not microplastic-free, drinking water from outdoor refill kiosks: A challenge and a wake-up call for urban management, Environmental Pollution, septiembre de 2022; 309(119800)
Mir Mohammad Ali, Md. Lokman Ali, Md. RefatJahan Rakib, Md. Saiful Islamd Md. Simul Bhuyan, Venkatramanan Senapathi, Sang Yong Chung, Priyadarsi D.Roy, SelvamSekar, Abu Reza Md Towfiqul Islam, Md. Zillur Rahman, Seasonal behavior and accumulation of some toxic metals in commercial fishes from Kirtankhola tidal river of Bangladesh – A health risk taxation, Chemosphere, agosto de 2022; 301, 134660
Fermín Pérez-Guevara, Priyadarsi D.Roy, Gurusamy Kutralam-Muniasamy, V.C.Shruti, Coverage of microplastic data underreporting and progress toward standardization, Science of the Total Environment, julio de 2022; 829, 154727
P.Godwyn-Paulson, M.P.Jonathan, P.F.Rodríguez-Espinosa, S.Abdul Rahaman, P.D.Roy, G.Muthusankar, C.Lakshumanan, Multi-hazard risk assessment of coastal municipalities of Oaxaca, Southwestern Mexico: An index based remote sensing and geospatial technique, International Journal of Disaster Risk Reduction, julio de 2022; 77, 103041
Sajimol Sundar, Priyadarsi D. Roy & Lakshumanan Chokkalingam , Spatial distribution and enrichment of metals in surface sediments from different coastal landforms at southernmost Indian subcontinent, Journal of Coastal Conservation, julio de 2022; 26(35)
S.Selvam, K.Jesuraja, Priyadarsi D.Roy, S.Venkatramanan, Ramsha Khan, Saurabh Shukla, D.Manimaran, P.Muthukumar, Human health risk assessment of heavy metal and pathogenic contamination in surface water of the Punnakayal estuary, South India, Chemosphere, julio de 2022; 298, 134027
Oscar Agesandro García-Arriola, Priyadarsi D. Roy, Irma Gabriela Vargas-Martínez, Ma. Patricia Giron-García, Jason H. Curtis, Isabel Israde-Alcantara, Jesús David Quiroz-Jimenez, Environmental and Hydrological Changes of Lake Coatetelco in Central Mesoamerica (Southwest Mexico) Over the Holocene and Comparison With Climatic Forcing, Frontiers in Ecology and Evolution, junio de 2022; 10, 809949
Shaheen Akhtar, Sk. Md.Equeenuddin, Priyadarsi D.Roy, Role of intrinsic physicochemical parameters on multi-element distribution in surface sediment of the Devi River estuary, eastern India, Chemosphere, junio de 2022; 297, 134195
Venkatesh Ravichandran, Komali Kantamaneni, Thilagaraj Periasamy, Priyadarsi D. Roy, Jothiramalingam Killivalavan, Sajimol Sundar, Lakshumanan Chokkalingam, Masilamani Palanisamy , Monitoring of Multi-Aspect Drought Severity and Socio-Economic Status in the Semi-Arid Regions of EasternTamil Nadu, India, Water, junio de 2022; 14(13), 2049
Gurusamy Kutralam-Muniasamy, Fermín Pérez-Guevara, Priyadarsi D. Roy, Ignacio Elizalde-Martínez & Shruti Venkata Chari , Surface water quality in the upstream of the highly contaminated Santiago River (Mexico) during the COVID-19 lockdown, Environmental Earth Sciences, mayo de 2022; 81, 316
J.A.Ramos-Leal, J.Moran-Ramírez, U.Rodríguez-Robles, G. Santacruz-DeLeón, P.D.Roy, R.M.Fuentes-Rivas, R.M.G. Fonseca-Montesde Oca, Hydrogeochemical and isotopic characterizations of an aquifer in the semi-arid region of the Mexican Highlands, Geochemistry, mayo de 2022; 125872, 125872
Vivek Sivakumar, M. C. Sashik Kumar, Logesh Natarajan, Priyadarsi D. Roy & Lakshumanan Chokkalingam , Vulnerability Assessment of Groundwater in Industrialized Tiruppur Area of South India using GIS-based DRASTIC model, Journal of the Geological Society of India, mayo de 2022; 98, 696–702
Godwyn-Paulson Pitchamani, Jonathan Muthuswamy Ponniah, Pedro Francisco Rodríguez-Espinosa, Priyadarsi Debajyoti Roy, Juan Manuel Sánchez-Núñez, Lorena Elizabeth Campos Villegas, Francisco Rodríguez-González & Ciro Eliseo Márquez-Herrera , Inferring pollution records in sediment cores from transitional environments of Marquelia coast, Guerrero, Mexico, Environmental Science and Pollution Research, marzo de 2022
Vishal Easwer, Srinivasa Raju Kolanuvada, Thirumalaivasan Devarajan, Prabhakaran Moorthy, Logesh Natarajan, Lakshumanan Chokkalingam, Priyadarsi D. Roy, Vulnerability mapping of the Paravanar sub-basin aquifer (Tamil Nadu, India) in SINTACS model for efficient land use planning, Environmental Research, marzo de 2022; 204(B), 112069
Mu.Ramkumar, K.Balasubramani, K.Kumaraswamy, M.Santosh, Priyadarsi D.Roy, A.Manobalaji, K.J.Juni, R.Nagarajan, RajveerSharma, Pankaj Kumar, Sundeep Chopra, N.A.Siddiqui, C.Ramachandran, S. Leo George, Episodic habitation and abandonment of Neolithic civilization sites in the Vaigai River Basin, Southern India, Geosystems and Geoenvironment, febrero de 2022; 1(1), 100007
Hussam Eldin Elzain, Sang Yong Chung, Venkatramanan Senapathi, Selvam Sekar, Seung Yeop Lee, Priyadarsi D.Roy, Amjed Hassan, ChidambaramSabarathinam, Comparative study of machine learning models for evaluating groundwater vulnerability to nitrate contamination, Ecotoxicology and Environmental Safety, enero de 2022; 229, 113061
P. Muthukumar, S.Selvam, D.S. Suresh Babu, Priyadarsi D.Roy, S.Venkatramanan, S.Y.Chung, Hussam Eldin Elzain, Measurement of submarine groundwater discharge (SGD) into Tiruchendur coast at southeast India using 222Rn as a naturally occurring tracer, Marine Pollution Bulletin, enero de 2022; 174, 113233
Fermín Pérez-Guevar, Priyadarsi D. Roy, Gurusamy Kutralam-Muniasamy, V.C.Shruti, A central role for fecal matter in the transport of microplastics: An updated analysis of new findings and persisting questions, Journal of Hazardous Materials Advances, diciembre de 2021; 4(100021)
Chijun Sun, Timothy M. Shanahan, Pedro N. DiNezio, Nicholas P. McKay, Priyadarsi D. Roy, Great Plains storm intensity since the last glacial controlled by spring surface warming, NATURE GEOSCIENCE, noviembre de 2021
P. Godwyn-Paulson, M.P.Jonathan, P. D.Roy, P.F.Rodríguez-Espinosa, G.Muthusankar, N.P.Muñoz-Sevilla, C.Lakshumanand, Evolution of southern Mexican Pacific coastline: Responses to meteo-oceanographic and physiographic conditions, Regional Studies in Marine Science, septiembre de 2021; 47(101914)
Ramki Periyasamy, Priyadarsi D. Roy, Lakshumanan Chokkalingam, Logesh Natarajan, Sajimol Sundar, Prabhakaran Moorthy, Muthusankar Gowrappan, Transformation Analysis on Landuse/Land Cover Changes for Two Decades Between 1999 and 2019 CE with Reference to Aquaculture—Nagapattinam Coast, Southeast India, Journal of the Indian Society of Remote Sensing, septiembre de 2021; 49, 2831–2845
S.Selvam, A.Manisha, Priyadarsi D.Roy, S.Venkatramanan, S.Y.Chung, P.Muthukumar, K.Jesuraja, Abdallah M. Elgorban, Bilal Ahmed, Hussam EldinElzain, Microplastics and trace metals in fish species of the Gulf of Mannar (Indian Ocean) and evaluation of human health, Environmental Pollution, septiembre de 2021; 291(118089)
V.C.Shruti, Fermín Pérez-Guevara, Priyadarsi D.Roy, Gurusamy Kutralam-Muniasamy, Analyzing microplastics with Nile Red: Emerging trends, challenges, and prospects, Journal of Hazardous Materials, septiembre de 2021; 423(127171)
Priyadarsi D.Roy, Sekar Selvam, Selvaraj Gopinath, Natarajan Logesh, José L.Sánchez-Zavala, Chokkalingam Lakshumanan, Geochemical evolution and seasonality of groundwater recharge at water-scarce southeast margin of the Chihuahuan Desert in Mexico, Environmental Research, agosto de 2021; 203(111847)
Priyadarsi D. Roy, S. Selvam, S. Gopinath, Chokkalingam Lakshumanan, Gowrappan Muthusankar, Jesús D. Quiroz-Jiménez, Olivia Zamora-Martínez & S. Venkatramanan, Hydro-geochemistry-based appraisal of summer-season groundwater from three different semi-arid basins of northeast Mexico for drinking and irrigation , Environmental Earth Sciences, agosto de 2021; 80(529)
Logesh Natarajan, Nagulan Sivagnanam, Tune Usha, Lakshumanan Chokkalingam, Sajimol Sundar, Muthusankar Gowrappan, Priyadarsi Debajyoti Roy, Shoreline changes over last five decades and predictions for 2030 and 2040: a case study from Cuddalore, southeast coast of India, Earth Science Informatics, julio de 2021; 14, 1315-1325
Priyadarsi D.Roy, Natarajan Logesh, Chokkalingam Lakshumanan, José L. Sánchez-Zavalaa, Decadal-scale spatiotemporal changes in land use/land cover of El Potosi Basin at semi-arid northeast Mexico and evolution of peat fire between 1980-2020 CE, Journal of South American Earth Science, junio de 2021; 110(103395)
Sajimol Sundar, Priyadarsi D. Roy, Lakshumanan Chokkalingam, Nagarajan Ramasamy, Evaluation of metals and trace elements in sediments of Kanyakumari beach (southernmost India) and their possible impact on coastal aquifers, Marine Pollution Bulletin, junio de 2021; 169(112527)
Jesuraja Kamaraj, Selvam Sekar, Priyadarsi D. Roy, Venkatramanan Senapathi, Sang Yong Chung, Muthukumar Perumal & Akhila V. Nath, Groundwater pollution index (GPI) and GIS-based appraisal of groundwater quality for drinking and irrigation in coastal aquifers of Tiruchendur, South India, Environmental Science and Pollution Research, febrero de 2021
Priyadarsi D. Roy, S.Selvam, S. Venkatramanan, Natarajan Logesh, Chokkalingam Lakshumanan, José L.Sánchez-Zavala, Identification of sources and groundwater recharge zones from hydrochemistry and stable isotopes of an agriculture-based paleo-lacustrine basin of drought-prone northeast Mexico, Geochemistry, enero de 2021, 125742
G.Venkatesan, T.Subramani, U.Sathya, Priyadarsi D.Roy, Seasonal changes in groundwater composition in an industrial center of south India and quality evaluation for consumption and health risk using geospatial methods, Geochemistry, diciembre de 2020; 80(4), 125651
Priyadarsi D.Roy, Oscar Agesandro García-Arriola, Silvia Garza-Tarazon, Irma G.Vargas-Martínez, Gowrappan Muthusankar, Patricia Giron-García, José L.Sánchez-Zavala, Ma. Consuelo Macias-Romo, Late Holocene depositional environments of Lake Coatetelco in Central-Southern Mexico and comparison with cultural transitions at Xochicalco, Palaeogeography, Palaeoclimatology, Palaeoecology, diciembre de 2020; 560, 110050
S.Arya,T.Subramani, G.Vennila, Priyadarsi D.Roy, Groundwater vulnerability to pollution in the semi-arid Vattamalaikarai River Basin of south India thorough DRASTIC index evaluation, Geochemistry, diciembre de 2020; 80(4), 125635
Gurusamy Kutralam-Muniasamy, Fermín Pérez-Guevara, Priyadarsi D. Roy, I. Elizalde-Martínez & V.C. Shruti, Impacts of the COVID-19 lockdown on air quality and its association with human mortality trends in megapolis Mexico City, Air Quality Atmosphere & Health, octubre de 2020
P. Kalpana, S. Parthiban, P. Gopinathan, T. Subramani, P. D. Roy, S. Gautam & J. Brema, Spatio-temporal estimation of rainfall patterns in north and northwestern states of India between 1901 and 2015: change point detections and trend assessments, Arabian Journal of Geoscience, octubre de 2020; 13, 1116
S. Selvam, K. Jesuraja, S. Venkatramanan, S.Y. Chung, P.D. Roy, P. Muthukumar, Manish Kumar , Imprints of pandemic lockdown on subsurface water quality in the coastal industrial city of Tuticorin, south India: A revival perspective, Science of the Total Environment, octubre de 2020; 738, 139848
V.C.Shruti, FermínPérez-Guevara, Priyadarsi D.Roy, I.Elizalde-Martínez, Gurusamy Kutralam-Muniasamy, Identification and characterization of single use oxo/biodegradable plastics from Mexico City, Mexico: Is the advertised labeling useful?, Science of the Total Environment, octubre de 2020; 739, 140358
Sajimol Sundar, Lakshumanan Chokkalingam, Priyadarsi D. Roy, Tune Usha, Estimation of microplastics in sediments at the southernmost coast of India (Kanyakumari), Environmental Science and Pollution Research, agosto de 2020
S.Selvam, K.Jesuraja, S.Venkatramanan, Priyadarsi D.Roy, V.Jeyanthi Kumari, Hazardous microplastic characteristics and its role as a vector of heavy metal in groundwater and surface water of coastal south India, Journal of Hazardous Materials, agosto de 2020, 123786
Fakira Bastia, Sk Md. Equeenuddin, Priyadarsi D. Roy, Ernesto Hernández-Mendiola, Geochemical signatures of surface sediments from the Mahanadi river basin (India): Chemical weathering, provenance, and tectonic settings, Geological Journal, julio de 2020; 55(7), 5294-5307
Vetrimurugan, E., Jonathan, M.P., Sarkar, S.K., Rodríguez-González, F., Roy, P.D., Velumani, S., Sakthi, J.S., Occurrence, distribution and provenance of micro plastics: A large scale quantitative analysis of beach sediments from southeastern coast of South Africa, Science of the Total Environment, julio de 2020; (141103)
S.Selvam, P.Muthukumar, S.Venkatramanan, P.D.Roy, K.Manikanda Bharath, K.Jesuraja, SARS-CoV-2 pandemic lockdown: Effects on air quality in the industrialized Gujarat state of India, Science of the Total Environment, junio de 2020, 140391
A. Palanisamy, D. Karunanidhi, T. Subramani, Priyadarsi D. Roy , Demarcation of groundwater quality domains using GIS for best agricultural practices in the drought-prone Shanmuganadhi River basin of South India, Environmental Science and Pollution Research, abril de 2020
D.Karunanidhi, P. Aravinthasamy, Deepak Kumar, T. Subramani, Priyadarsi D.Roy, Sobol sensitivity approach for the appraisal of geomedical health risks associated with oral intake and dermal pathways of groundwater fluoride in a semi-arid region of south India, Ecotoxicology and Environmental Safety, marzo de 2020; 194, 110438
Jesús D. Quiroz‐Jiménez, Priyadarsi D. Roy, Geochemistry of last glacial lacustrine sediments in core region of the North American Monsoon, northwest Mexico: Source of biomass, hydrological balance and chemical weathering, Geological Journal, marzo de 2020, 1-13
Priyadarsi D. Roy, Guillermo Vera-Vera, José L. Sánchez-Zavala, Timothy Shanahan, Jesús David Quiroz Jiménez, Jason H. Curtis, Patricia Girón-García, Gowrappan Muthusankar Víctor H. Lemus-Neri, Muthusankar Gowrappan, Depositional histories of vegetation and rainfall intensity in Sierra Madre Oriental Mountains (northeast Mexico) since the late Last Glacial, Global and Planetary Change, febrero de 2020; (103136)
Rosa E. Rodríguez-Martínez, Priyadarsi D. Roy, Nuria Torrescano-Valle, Nancy Cabanillas-Terán, Silvia Carrillo-Domínguez, Ligia Collado-Vides, Marta García-Sánchez, Brigitta I. van Tussenbroek, Element concentrations in pelagic Sargassum along the Mexican Caribbean coast in 2018-2019, PeerJ, febrero de 2020; (8), e8667
V. Satheeskumar, T. Subramani, Lakshumanan, Priyadarsi D. Roy, D. Karunanidhi, Groundwater chemistry and demarcation of seawater intrusion zones in the Thamirabarani delta of south India based on geochemical signatures, Environmental Geochemistry and Health, febrero de 2020, 1-14
D. Karunanidhi, P. Aravinthasamy, M. Deepali, T. Subramani, Priyadarsi D. Roy, The effects of geochemical processes on groundwater chemistry and the health risks associated with fluoride intake in a semi-arid region of South India, Royal Society of Chemistry Advances, enero de 2020; 20, 4840-4859
D. Karunanidhi, P. Aravinthasamy, Priyadarsi D. Roy, R. M. Praveenkumar, K. Prasanth, S. Selvapraveen, A. Thowbeekrahman, T. Subramani, K. Srinivasamoorthy, Evaluation of non-carcinogenic risks due to fluoride and nitrate contaminations in a groundwater of an urban part (Coimbatore region) of south India, Environmental Monitoring and Assessment, enero de 2020; 192, 102
E. Vetrimurugan, V.C. Shruti, M.P. Jonathan,, Priyadarsi D. Roy, S.K. Sarkar,, B.K. Rawlins,Lorena Elizabeth Campos Villegas, Comprehensive study on metal contents and their ecological risks in beach sediments of KwaZulu-Natal province, South Africa, Marine Pollution Bulletin, diciembre de 2019; 149, 110555
Aravinthasamy, P., Karunanidhi, D., Subramani, T., Anand, B., Roy, P.D., Srinivasamoorthy, K, Fluoride contamination in groundwater of the Shanmuganadhi River basin(south India) and its association with other chemical constituents using geographical information system and multivariate statistics, Geochemistry, noviembre de 2019, 125555
D. Karunanidhi, D., Aravinthasamy, P., Subramani, T., Roy, P.D., Srinivasamoorthy, K., Risk of Fluoride-Rich Groundwater on Human Health: Remediation Through Managed Aquifer Recharge in a Hard Rock Terrain, South India, Natural Resources Research, noviembre de 2019, 1-27
C.M.Chávez-Lara, J.Holtvoeth, P.D.Roy, R.D.Pancost, Lipid biomarkers in lacustrine sediments of subtropical northeastern Mexico and inferred ecosystem changes during the late Pleistocene and Holocene, Palaeogeography, Palaeoclimatology, Palaeoecology, agosto de 2019
Gabriel Vázquez-Castro, Priyadarsi D. Roy, Berenice Solís-Castillo, Geochemical evidence of anthropogenic activity in western Mesoamerica since the Classic Period, Journal of Archeological Science Reports, julio de 2019; 26, 101920
Priyadarsi D. Roy, Guillermo Vera‐Vera Jason H. Curtis José L. Sánchez‐Zavala Jesús David Quiroz‐Jimenez Gowrappan Muthu Sankar, Response of arid northeast Mexico to global climate changes during the late Pleistocene to the middle Holocene, Earth Surface Processes and Landforms, mayo de 2019
V. Satheeskumar, T. Subramani, Lakshumanan, Priyadarsi D. Roy, D. Karunanidhi, Groundwater chemistry and demarcation of seawater intrusion zones in the Thamirabarani delta of south India based on geochemical signatures, Environmental Geochemistry and Health, febrero de 2019, 1-14
Roy, P.D., Torrescano-Valle, N., Escarraga-Paredes, D.S., Vela-Pelaez, A.A., Lozano-Santacruz, R. , Comparison of elemental concentration in near-surface late Holocene sediments and precipitation regimes of the Yucatán Peninsula (Mexico): a preliminary study, Boletin Geológico y Minero, diciembre de 2018; 129(4), 693-706
Torres-Rodríguez, E., Lozano-García, S., Caballero-Miranda, M., Ortega-Guerrero, B., Sosa-Nájera, S., Roy, P.D., Pollen and non-pollen palynomorphs of Lake Chalco as indicators of paleolimnological changes in high-elevation tropical central Mexico since MIS 5, Journal of Quaternary Science, octubre de 2018; 33(8), 945-957
Montero-Martínez,G., Rivera-Arellano, J., Roy, P.D., Rosado-Abón, A., Hernández-Nagay, D.P. Mendoza-Trejo,A., Content and composition of dissolved organic carbon in precipitation at the southern part of Mexico City, Atmósfera, julio de 2018; 31(4), 331-346
Gutiérrez-Mosquera, H., Shruti, V.C., Jonathan, M.P., Roy, P.D., Rivera-Rivera, D.M. , Metal concentrations in the beach sediments of Bahia Solano and Nuquí along the Pacific coast of Chocó, Colombia: A baseline study, Marine Pollution Bulletin, junio de 2018; 135, 1-8
C.M. Chavez-Lara, J. Holtvoeth, P.D. Roy, R.D. Pancost, A 27cal ka biomarker-based record of ecosystem changes from lacustrine sediments of the Chihuahua Desert of Mexico, Quaternary Science Review, mayo de 2018; 191, 132-143
Alejandro A.Aragón-Moreno,Gerald A.Islebe, Priyadarsi D.Roy, NuriaTorrescano-Valle, Andreas D.Mueller, Climate forcings on vegetation of the southeastern Yucatán Peninsula (Mexico) during the middle to late Holocene, Palaeogeography, Palaeoclimatology, Palaeoecology, abril de 2018; 495, 214-226
E.Vetrimurugan, V.C.Shruti, M.P.Jonathan, Priyadarsi D.Roy, B.K.Rawlins, D.M.Rivera-Rivera, Metals and their ecological impact on beach sediments near the marine protected sites of Sodwana Bay and St. Lucia, South Africa. , Marine Pollution Bulletin, febrero de 2018; 127, 568-575
Priyadarsi D. Roy, M.P. Jonathan, José Luis Sanchez-Zavala, Ma. Consuelo Macias, Rufino Lozano-Santacruz, Brenda Grisset Ocampo-Rios, Tsunami deposit research in Mexico compels multi-disciplinary approach, not just multi-proxy application, Geofisica Internacional, enero de 2018; 57(1), 11-12
Miguel Castilloa, Esperanza Muñoz-Salinasa, José Luis Arce, Priyadarsi Roy, Early Holocene to present landscape dynamics of the tectonic lakes of west-central Mexico, Journal of South American Earth Sciences, diciembre de 2017; 80, 120-130
Gabriel Vázquez C., Priyadarsi D. Roy, Berenice Solis C., Sean M. Smith M., Ericka Blanco M., Rufino Lozano-Santacruz, Holocene paleohydrology of the Etzatlán-Magdalena basin in westerncentral Mexico and evaluation of main atmospheric forcings, Palaeogeography, Palaeoclimatology, Palaeoecology, septiembre de 2017; 487, 149-157
Priyadarsi D. Roy, Nuria Torrescano-Valle, Gerald A. Isbele, Luz Veronica Gutierrez-Ayala, Late Holocene hydroclimate of the western Yucatan Peninsula (Mexico), Journal of Quaternary Science, septiembre de 2017; 32, 1112-1120
Quiroz Jimenez, J.D., Roy, P.D., Evaluation of geochemical data generated in portable ED-XRF compared to conventional WD-XRF with sediments from the Santiaguillo Basin (State of Durango, Mexico). , Geofisica Internacional, septiembre de 2017; 56(3), 305-315
Ramasamy, N., Roy, P.D., Kessler, F.L., Jong, J., Dayong, V., Jonathan, M.P., An integrated study of geochemistry and mineralogy of the Upper Tukau Formation, Borneo Island (East Malaysia): Sediment Provenance, Depositional Setting and Tectonic Implications., Asian Journal of Earth Sciences, agosto de 2017; 143, 77-94
Vetrimurugan, E., Shruti, V.C., Jonathan, M.P., Roy, P.D., Kunene, N.W., Campos Villegas, L.E., Metal concentration in the tourist beaches of South Durban: An industrial hub of South Africa, Marine Pollution Bulletin, abril de 2017; 117, 538-546
Jesús David Quiroz-Jimenez, Priyadarsi D. Roy, Rufino Lozano-Santacruz, Patricia Giron-García, Hydrological responses of the Chihuahua Desert of Mexico to possible Heinrich Stadials, Journal of South American Earth Sciences, enero de 2017; 73, 1-9
Ocampo-Rios, B.G., Roy, P.D., Macías, M.C., Jonathan, M.P., Lozano-Santacruz, R., , Tsunami deposits of September 21st 1985 in Barra de Potosí: comparison with other studies and evaluation of some geological proxies for southwestern Mexico., Geofisica Internacional, enero de 2017; 56(1), 57-69
Quiroz Jimenez, J.D., Roy, P.D., Beramendi-Orosco, L., Lozano-García, S., Vázquez-Selem, L., Orbital-scale droughts in the central-northern Mexico during the late Quaternary and comparison with other subtropical and tropical records, Geological Journal, enero de 2017
G. Muthusankar, M. P. Jonathan, C. Lakshumanan, Priyadarsi D. Roy, K. Srinivasa-Raju, Coastal erosion vs man-made protective structures: evaluating a two-decade history from southeastern India, Natural Hazards, septiembre de 2016; 85(1), 637-647
I. Retama, M.P. Jonathan, V.C. Shruti, S. Velumani, S.K. Sarkar, Priyadarsi D. Roy, P.F. Rodríguez-Espinosa, Microplastics in tourist beaches of Huatulco Bay, Pacific coast of southern Mexico, Marine Pollution Bulletin, septiembre de 2016; 113(1-2), 530-535
E. Vetrimurugan, M.P. Jonathan, Priyadarsi D. Roy, V.C. Shruti, O.M. Ndwandwe, Bioavailable metals in tourist beaches of Richards Bay, Kwazulu-Natal, South Africa, Marine Pollution Bulletin, febrero de 2016; 105(1), 430-436
I. Retama, M. P. Jonathan, Priyadarsi D. Roy, P. F. Rodrıguez-Espinosa, R. Nagarajan, S. K. Sarkar, S. S. Morales-García, N. P. Muñoz-Sevilla, Metal concentrations in sediments from tourist beachesof Huatulco, Oaxaca, Mexico: an evaluation of post-Easter week vacation, Enviromental Earth Sciences, febrero de 2016; 75, 375
Priyadarsi D. Roy, Ashok K. Singhvi, Climate variation in the Thar Desert since the Last GlacialMaximum and evaluation of the Indian Monsoon, TIP Revista especializada en Ciencias Químico-Biológicas, febrero de 2016; 19(1), 32-44
Roy, Priyadarsi D., Rivero-Navarrete, Axel, Sánchez-Zavala, Jose Luis, Beramendi-Orosco, Laura E., Muthu-Sankar, Gowrappan, Lozano-Santacruz, Rufino, Atlantic Ocean modulated hydroclimate of the subtropical northeastern Mexico since the Last Glacial Maximum and comparison with the southern US, Earth and Planetary Science Letters, enero de 2016; 434, 141-150
Roy, Priyadarsi D., Chavéz-Lara, Claudia M., Beramendi-Orosco, Laura E. , Muthu-Sankar, Gowrappan, Sánchez-Zavala, José L. , Lozano-Santacruz, Rufino , Quiroz-Jimenez, Jesús D. ,López-Balbiaux, Nayeli, Paleohydrology of the Santiaguillo Basin (Mexico) since late last glacial and climate variation in southern part of western subtropical North America, Quaternary Research, noviembre de 2015; 84(3), 335-347
Rodriguez-Ramírez, A., Caballero, M., Roy, P., Ortega, B., Vázquez-Castro, G., Lozano-García, S, Climatic variability and human impact during the last 2000 years in western Mesoamerica: evidence of late Classic (AD 600–900) and Little Ice Age drought events, Climates of the Past, septiembre de 2015; 11, 1239
Socorro Lozano-García, Beatriz Ortega, Priyadarsi D. Roy, Laura Beramendi-Orosco,Margarita Caballero, Climatic variability in the northern sector of the American tropics since the latest MIS 3, Quaternary Research, septiembre de 2015; 84, 262-271
Nagarajan, R., Jonathn, M.P., Roy, P.D., Muthu Sankar, G., Lakshumanan, C, Decadal evolution of a spit in the Baram River mouth in Eastern Malaysia, Continental Shelf Research, agosto de 2015; 105, 18-25
Claudia M. Chávez-Lara, Priyadarsi D. Roy, Liseth Pérez, Gowrappan Muthu Sankar, Victor H. Lemus Neri, Ostracode and C/N based paleoecological record of sub-tropical northern Mexico over the last 27 cal kyr BP, Revista Mexicana de Ciencias Geológicas, enero de 2015; 32(1), 1-10
Torres-Rodriguez Esperanza, Lozano-Garcia Socorro, Roy Priyadarsi, Ortega Beatriz, Beramendi Laura, Correa-Metrio Alexander, Caballero Margarita, Last Glacial droughts and fire regimes in the central Mexican highlands, Journal of Quaternary Science, enero de 2015; 30(1), 88
Priyadarsi D. Roy, Axel Rivero-Navarrete, José Luis Sánchez-Zavala, Nayeli López-Balbiaux, Subsurface fire and subsidence at Valle del Potosi (Nuevo León, Mexico): Preliminary observations, Boletin de la Sociedad Geologica Mexicana, diciembre de 2014; 66(3), 553
R. Nagarajan, M. P. Jonathan, Priyadarsi D. Roy, M. V. Prasanna, A. Elayaraja, Enrichment pattern of leachable trace metals in roadside soils of Miri City, Eastern Malaysia, Environmental Earth Sciences, septiembre de 2014; 72(6), 1765-1773
Judith D. Silva; Srinivasalu Seshachalam; Saravanan Panchatcharam; Jonathan Muthuswamy Ponniah; Anandasabari Karthikeyan; Priyadarsi D. Roy, Environmental assessment of marine sediments off Poompuhar, Southeast Coast of India, Int. J. of Environmental Technology and Management, agosto de 2014; 17(6), 469-482
Roy, P.D., Charles-Polo, M.P., López-Balbiaux, N., Pi-Puig, T., Muthu Sankar, G., Lozano-Santacruz, R., Lozano-García, S., Romero, F.M, Last glacial hydrological variations at the southernmargin of sub-tropical North America and a regionalcomparison, Journal of Quaternary Science, julio de 2014; 29(5), 495-505
Roy, P.D., Quiroz-Jiménez, J.D., Chávez-Lara, C.M., Sánchez-Zavala, J.L., Pérez-Cruz, L.L., Muthu Sankar, G, Humid Pleistocene−Holocene transition and early Holocene in sub-tropical northern Mexico and possible Gulf of California forcing, Boreas-An International Journal of Quaternary Research, julio de 2014; 43(3), 577-587
Caballero, M., Rodríguez, A., Vilaclara, G., Ortega, B., Roy P., Lozano, S., Hydrochemistry, ostracods and diatoms in a deep, tropical, crater lake in western Mexico, Journal of Limnology, octubre de 2013; 72, 512-523
Roy, P.D., Quiroz-Jiménez, J.D., Pérez-Cruz, L.L., Lozano-García, S., Metcalfe, S.E., Lozano-Santacruz, R., López-Balbiaux, N., Sánchez-Zavala, J.L., Romero, F.M., Late Quaternary paleohydrological conditions in the drylands of northern Mexico: A summer precipitation proxy record of the last 80 cal ka BP, Quaternary Science Review, octubre de 2013; 78, 342-354
Silva, J.D., Srinivasalu, S., Roy, P.D., Jonathan, M.P., Environmental conditions inferred from multi-element concentrations in sediments off Cauvery delta, Southeast India, Environmental Earth Sciences, julio de 2013
Nagarajan, R., Roy, P.D., Jonathan, M.P., Lozano, R., Kessler, F.L., Prasanna, M.V., Geochemistry of Neogene sedimentary rocks from Borneo Basin, East Malaysia: Paleo-weathering, provenance and tectonic setting, Chemie Der Erde, mayo de 2013
Roy, P.D., Rivero-Navarrete, A., Lopez-Balbiaux, L., Pérez-Cruz, L.L., Metcalfe, S.E., Muthu Sankar, G., Sánchez-Zavala, J.L., A record of Holocene summer-season palaeohydrological changes from the southern margin of Chihuahua Desert (Mexico) and possible forcings, The Holocene, abril de 2013; 23, 1105-1114
Nagarajan, R., Jonathan, M.P., Roy, P.D., Wai-Hwa, L., Prasanna, M.V., Sarkar, S.K., Navarrete-López, M, Metal concentrations in sediments from tourist beaches of Miri City, Sarawak, Malaysia (Borneo Island), Marine Pollution Bulletin, febrero de 2013; 73, 369-373
Jonathan, M.P., P.D. Roy, Rodríguez-Espinosa, P., Sarkar, S.K., Muñoz-Sevilla, N.P., Navarrete-Lopez, M., Srinivasalu, S., Thangadurai, N, Evaluation of metal concentration (acid leachable) in sediments from River Pánuco and its adjacent lagoon areas, NE Mexico, Environmental Earth Sciences, agosto de 2012
Chávez-Lara, C.M., Roy, P.D., Caballero, C., Carreño, A.L., M.M., Lakshumanan, Lacustrine ostracods from the Chihuahua Desert of Mexico and inferred Late Quaternary paleoecological conditions, Revista Mexicana de Ciencias Geológicas, abril de 2012; 29(2), 422-431
Roy, P.D., Jonathan, M.P., Perez-Cruz, L.L., Sanchez-Cordoba, M.M., Quiroz-Jimenez, J.D, Romero, F.M, A millennaial-scale late Pleistocene-Holocene palaeoclimatic resgister from western Chihuahua Desert, Mexico, Boreas-An International Journal of Quaternary Research, abril de 2012; 41, 707-717
Roy, P.D., Caballero, M., Lozano, S., Lozano, R., Morton, O., Jonathan, M.P., Sanchez, J.L., Macias, M.C, Provenance of sediments deposited at paleolake San Felipe, western Sonora Desert: implications to regimes of summer and winter precipitation during last 50 cal kyr BP, Journal of Arid Environments, febrero de 2012; 81, 47-58
Roy, P.D., Jonathan, M.P., Macias, M.C., Sánchez, J.L., Lozano, R., Srinivasalu, S, Geological characteristics of 2011 Japan tsunami in the Southwestern coast of Mexico, Chemie Der Erde, febrero de 2012; 72, 91-95
Roy, P.D., Arce, J.S., Lozano, R., Jonathan, M.P., Centeno-García, E., Lozano-García, S, Geochemistry of a tephra-paleosol sequence from north-eastern Basin of Mexico: implications to tephrochronology and chemical weathering during Quaternary, Revista Mexicana de Ciencias Geológicas, enero de 2012; 29(1), 24-38
Jonathan, M.P., Roy, P.D., N. Thangadurai, S. Srinivasalu, P.F. Rodriguez-Espinosa, S.K. Sarkar, C. Lakshumanan, M. Navarrete-Lopez, Muñoz-Seville, N.P, Metal concentrations in water and sediments from toursit beaches of Acapulco, México, Marine Pollution Bulletin, agosto de 2011; 62, 845-850
Santhiya, G., Lakshumanan, C., Jonathan, M.P., Roy, P.D., Navarrete-Lopez, M., Srinivasalu, S., Uma-Maheswari, B., Krishnakumar, P, Metal Enrichment in Beach Sediments from Chennai Metropolis, SE coast of India, Marine Pollution Bulletin, agosto de 2011; 62, 2537-2542
Jonathan, M.P., Roy, P.D., Sánchez-Zavala, J.L., Srinivasalu, S., Macías-Romo, M.C., Lakshumanan, C, Field Surrey report on the 11th March 2011 tsunami in Pacific coast of México, Natural Hazards, junio de 2011; 58, 859-864
Smykatz-Kloss, W., Roy, P.D, Evaporite mineralogy and major element geochemistry as tools for palaeoclimatic investigations in arid regions: A synthesis, Boletín de la sociedad Geológica Mexicana, diciembre de 2010; 62(3), 379-390
Sosa-Najera, S., Lozano-García, S., Roy, P.D., Caballero, M, Registro de sequías históricas en el occidente de México con base en el análisis elemental de sedimentos lacustres: El caso del Lago de Santa María del Oro, Boletín de la sociedad Geológica Mexicana, diciembre de 2010; 62(3), 437-451
Pi, T., Lozano, S., Caballero, M., Ortega-Guerrro, B., Roy, P, Discovery and characterization of a struvite layer in the Chalco paleolake, Mexico, Revista Mexicana de Ciencias Geológicas, septiembre de 2010; 27(3), 573-580
Roy, P.D., Caballero, M., Lozano, R., Ortega, B., Lozano, S., Pi, T., Israde, I., Morton, O., Geochemical record of late Quaternary paleoclimate from the lacustrine sediments of paleo-lake San Felipe, western Sonora desert, Mexico., Journal of South American Earth Sciences, marzo de 2010; 29, 586-596
Jonathan, M.P., Jayprakash, M., Srinivasalu, S., Roy, P.D., Thangadurai, N., Muthuraj, M., Stephen-Pitchaimani, V., Evaluation of acid leachable trace metals in soils around five century old mining district in Hidalgo, Central Mexico., Water, Air and Soil Pollution, enero de 2010; 205, 227-236
Jonathan, M.P., Sarkar, S.K., Roy, P.D., Alam, Md. A., Chatterjee, M., Bhattacharya, B.D., Bhattacharya, A., Satpathy, K.K, Acid leachable trace metals in sediments cores from Sunderban mangrove wetland, India: an approach towards regular monitoring, Ecotoxicology, enero de 2010; 19(2), 405-418
Roy, P.D., Morton-Bermea, O., Hernandez-Alvarez, E., Pi, T., Lozano, R., Rare earth element geochemistry of the late Quaternary tephra and volcano-clastic sediments from north-eastern Basin of Mexico., Geofisica Internacional, enero de 2010; 49(3), 3-15
P.D. Roy, M. Caballero, R. Lozano, T. Pi, O. Morton, Late Pleistocene-Holocene geochemical history inferred from Lake Tecocomulco sediments, Basin of Mexico, Mexico. , Geochemical Journal, 2009; 43(1), 49-64
P.D. Roy, Y.C. Nagar, N. Juyal, W. Smykatz-Kloss, A.K. Singhvi, Geochemical signatures of Late Holocene paleo-hydrological changes from Phulera and Pokharan saline playas near the eastern and western margins of the Thar Desert, India , Journal of Asian Earth Sciences, marzo de 2009; 34(3), 275-286
Srinivasalu, S., Rajeshwara Rao, N., Thangadurai, N., Jonathan, M.P., Roy, P.D., Ram Mohan, V., Sarvanan, P., Characateristics of 2004 tsunami deposits of the northern Tamil Nadu coast, Southeastern India., Boletín de la sociedad Geológica Mexicana, marzo de 2009; 61(1), 111-118
P.D. Roy, M. Caballero, R. Lozano, W. Smykatz-Kloss, Geochemistry of Late Quaternary sediments from Tecocomulco lake, central Mexico: implication to chemical weathering and provenance., Chemie Der Erde, septiembre de 2008; 68(4), 383-393
P.D. Roy, W. Smykatz-Kloss, O.Morton , Geochemical zones and reconstruction of late Holocene environments from shallow core sediments of the Pachapadra paleo-lake, Thar Desert, India, Chemie Der Erde, agosto de 2008; 68(3), 313-322
P.D. Roy, R.Sinha, W.Smykatz-Kloss, A.K. Singhvi, Y.C. Nagar, , Playas of the Thar Desert: Mineralogical and Geochemical archives of Late Holocene climate. , Asian Journal of Earth Sciences, marzo de 2008; 1(2), 43-61
Roy, P. D., Thermal characteristics of near-surface playa sediments from the Thar Desert, India., Journal of the Geological Society of India, agosto de 2007; 69, 781-788
Roy, P. D., Smykatz-Kloss, W. , REE geochemistry of the recent playa sediments from the Thar Desert: an implication to playa sediment provenance., Chemie Der Erde, agosto de 2007; 67, 55-68
Kinardo Flores Castro, Màrius Ramírez Cardonaa, Luis Enrique Ortiz Hernández, Carles Canet, Roy, P.D., José Luis Cadena Zamudio., Paragénesis de minerales de Te-Ag-Bi-Au en la mina Nuevo Encino Prieto, Jacala de Ledezma, Hidalgo, México., Boletín de la Sociedad Mexicana de Mineralogía, 2006; 17, 3-9
Roy, P.D., Flores-Castro, K., Morton, O., Jonathan, M.P., Blanco-Piñon, A. , A proposed mineralogical index for Holocene climatic change from playa sediments: evidence from eastern margin of the Thar Desert, India., Boletín de la Sociedad Mexicana de Mineralogía, 2006; 17, 79-85
Roy, P. D., Smykatz-Kloss, W., Sinha, R., Late Holocene geochemical history inferred from Sambhar and Didwana playa sediments, Thar desert, India: comparison and synthesis. , Quaternary International, agosto de 2006; 144, 84-98
Roy, P. D., Sinha, R., Smykatz-Kloss, W., Mineralogy and geochemistry of the evaporitic crust from the hyper saline Sambhar lake playa., Chemie Der Erde, 2002; 61, 241-253