Article
Meteorology & Atmospheric Sciences
M. Midhun, P. R. Lekshmy, Kaustubh Thirumalai, R. Ramesh
Summary: There is a common mode of interannual rainfall variability in the Sahel and Indian summer monsoon regions, with the influence of Pacific and Atlantic sea surface temperatures. This can be captured using stable isotopes observations.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Environmental Sciences
Jerry B. Samuel, Arindam Chakraborty, Anagha Paleri
Summary: Land surface utilization in the Indian subcontinent has significant impacts on the region's monsoon rainfall. An increase in forest cover generally leads to more precipitation in India, but the relationship is not linear due to spatial heterogeneity. The consequences of land surface alterations act through evaporation, net energy input, and moist stability, with different mechanisms dominating different regions. The findings have broader implications for other forcings and scenarios.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Oceanography
J. S. Saranya, M. K. Roxy, Panini Dasgupta, Ajay Anand
Summary: This study investigates the genesis and trend of marine heatwaves (MHWs) in the Indian Ocean from 1982 to 2018 and their impact on the Indian summer monsoon. The findings suggest that the rapid warming in the Indian Ocean plays a critical role in increasing the number of MHWs, while El Nino has a prominent influence on their occurrence during the monsoon.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Meteorology & Atmospheric Sciences
S. S. Nimya, Saikat Sengupta, Anant Parekh, Sourendra Kumar Bhattacharya, Rohit Pradhan
Summary: This study evaluates the performance of seven Isotope-enabled General Circulation Models (GCMs) in simulating the monthly average precipitation isotope ratios in three regions of India during the summer monsoon season. The models generally underestimate the isotope values in two regions but show variable responses in the third region. The biases in the models' simulated isotope values are influenced by local factors and large-scale atmospheric circulation.
Article
Geosciences, Multidisciplinary
Sajani Surendran, K. V. Ajay Anand, Suraj Ravindran, Kavirajan Rajendran
Summary: Evaluation of century-long simulations of the CESM shows the model's ability to capture characteristics related to aerosols, clouds, convection, rainfall, and circulation over India during the summer monsoon season. The simulations reveal that aerosols have an indirect effect on warming the atmosphere and exacerbating the severity of breaks in the summer monsoon season, with dust aerosols playing a significant role.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Sarah M. McGrath, Steven C. Clemens, Yongsong Huang, Masanobu Yamamoto
Summary: The orbital-scale monsoon variability in India is not a direct response to northern hemisphere summer insolation, but rather reflects changes in moisture source and transport paths associated with changes in greenhouse gases and ice volume. The responses of Indian and East Asian monsoon systems at orbital scale are uncoupled and are driven by different forcings.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Shu Gui, Ruowen Yang, Feng Zeng, Jinxin Cheng
Summary: This study investigates the interdecadal variability of the interface between the Indian summer monsoon and the East Asian summer monsoon. Results suggest that this variability is closely linked to two air-sea coupled modes, which influence the strength of the East Asian summer monsoon by affecting the western North Pacific subtropical high and causing cyclonic and anticyclonic anomalies. In recent decades, the impact of one of these modes has weakened, while the other has become more influential on this variability.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Shu Gui, Ruowen Yang, Feng Zeng, Jinxin Cheng
Summary: This study investigates the interdecadal variability of the interface between the Indian summer monsoon and the East Asian summer monsoon. Results suggest that this variability is characterized by a zonal movement associated with variations between the Indian summer monsoon and the East Asian summer monsoon. This variability is closely linked to two air-sea coupled modes, resembling the Asian-Pacific Oscillation and the North Atlantic tripole pattern. Modeling results confirm the influence of these patterns on the interdecadal variability.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Environmental Sciences
Vinay Kumar, K. Sunilkumar, Tushar Sinha
Summary: The study revealed a decreasing trend in 4-day or longer continuous rainfall events and a reduction in the number of rainy days in the Indian summer monsoon over the past 34 years. This change may lead to water scarcity, reduced soil moisture, and an increased risk of flooding from heavy rainfall events.
Article
Meteorology & Atmospheric Sciences
Smrutishree Lenka, Krushna Chandra Gouda, Rani Devi, C. M. Joseph
Summary: A better understanding of the phases of the Indian summer monsoon is crucial for decision making and effective management. This study estimates the onset and withdrawal dates of the monsoon using long-term rainfall data and analyzes their variability. Progress of the monsoon is monitored using latitudinal variation and rainfall strength in continental India. The study also assesses the impact of large-scale processes, such as ENSO, on the onset and progress of the monsoon. The results provide valuable insights for accurate prediction and modeling of the monsoon dynamics in India.
Review
Geosciences, Multidisciplinary
Qinjian Jin, Jiangfeng Wei, William K. M. Lau, Bing Pu, Chien Wang
Summary: The Indian summer monsoon is crucial for providing the majority of annual rainfall to the Indian subcontinent and affecting over a quarter of the world's population. Asia is also a significant source of dust, and the interactions between dust and the monsoon are increasingly studied. Dust particles can modulate monsoon circulation and precipitation, while the monsoon can in turn influence dust emissions and deposition.
EARTH-SCIENCE REVIEWS
(2021)
Article
Environmental Sciences
Sreyashi Debnath, Gaurav Govardhan, Subodh Kumar Saha, Anupam Hazra, Samir Pohkrel, Chinmay Jena, Rajesh Kumar, Sachin D. Ghude
Summary: This study investigates the impact of reduced dust emissions on the intensity of monsoon rainfall over the Indian region. The results show that the reduction in dust emissions significantly alters the spatial distribution of rainfall, with increased rainfall over the Bay of Bengal and eastern coastal regions, and decreased rainfall over the Indo-Gangetic Plain and parts of Central India.
ATMOSPHERIC ENVIRONMENT
(2023)
Review
Geosciences, Multidisciplinary
Amzad Hussain Laskar, Archna Bohra
Summary: A large part of South Asia relies on the Indian Summer Monsoon season for rainfall, which significantly impacts the socioeconomic conditions of developing countries in the region. The rise and fall of ancient civilizations in South Asia were influenced by the Indian Summer Monsoon, although this influence is not fully explored. Attempts have been made to correlate monsoon variation with the decline of civilizations, but more quantitative estimations of the impact of monsoon variability on cultural shifts are needed.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Satyaban B. Ratna, Annalisa Cherchi, Timothy J. Osborn, Manoj Joshi, Umakanth Uppara
Summary: The extremely positive Indian Ocean Dipole (IOD) event in 2019 had a significant influence on the Indian Summer Monsoon (ISM) rainfall, particularly towards the end of the season. However, warm sea surface temperature anomalies in the central equatorial Pacific also played a role in affecting rainfall patterns over India.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geochemistry & Geophysics
Syee Weldeab, Carsten Ruehlemann, Qinghua Ding, Vyacheslav Khon, Birgit Schneider, William R. Gray
Summary: Indian Summer Monsoon (ISM) precipitation plays a crucial role in the livelihood of densely populated regions. The variability of the ISM is influenced by changes in the sea surface temperature (SST) gradient in the Indian Ocean. This study provides evidence that the thermal gradient in the Indian Ocean strongly influenced the timing and strengthening of the Holocene monsoon.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geography, Physical
A. V. Sijinkumar, B. Nagender Nath, S. Clemens
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2016)
Article
Geography, Physical
D. Gebregiorgis, E. C. Hathorne, A. V. Sijinkumar, B. Nagender Nath, D. Nuernberg, M. Frank
QUATERNARY SCIENCE REVIEWS
(2016)
Review
Geography, Physical
A. V. Sijinkumar, Steven Clemens, B. Nagender Nath, Warren Prell, Rachid Benshila, Matthieu Lengaigne
QUATERNARY SCIENCE REVIEWS
(2016)
Article
Geography, Physical
Bejugam Nagender Nath, Adukkam V. Sijinkumar, Dnyandev V. Borole, Shyam M. Gupta, Lina P. Mergulhao, Maria B. L. Mascarenhas-Pereira, Venkitasubramani Ramaswamy, Medimi V. S. Guptha, Goran Possnert, Ala Aldahan, Nandkumar H. Khadge, Rahul Sharma
Article
Geography, Physical
Adukkam V. Sijinkumar, Bejugam N. Nath, Medimi V. S. Guptha, Syed M. Ahmad, Bandaru R. Rao
Article
Paleontology
A. V. Sijinkumar, B. Nagender Nath, G. Possnert, A. Aldahan
MARINE MICROPALEONTOLOGY
(2011)
Article
Multidisciplinary Sciences
Pavan Miriyala, N. P. Sukumaran, B. Nagender Nath, P. B. Ramamurty, A. V. Sijinkumar, B. Vijayagopal, V. Ramaswamy, Tyson Sebastian
SCIENTIFIC REPORTS
(2017)
Article
Geography, Physical
Tyson Sebastian, B. Nagender Nath, M. Venkateshwarlu, Pavan Miriyala, Archana Prakash, P. Linsy, M. Kocherla, Armoury Kazip, A. V. Sijinkumar
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2019)
Article
Geography, Physical
E. Sreevidya, A. V. Sijinkumar, B. Nagender Nath
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2019)
Article
Geography, Physical
A. Sijinkumar, B. Nagender Nath, Steven Clemens, N. M. Gayathri, P. Miriyala
Summary: During the summer monsoon in the northeastern Indian Ocean, a large amount of rain and river discharge leads to strong stratification and oligotrophic conditions, impacting upper ocean productivity. Study shows significant water column stratification and collapse of productivity during Indian summer monsoon evolution, as well as events of stratification during different periods and changes in IS intensity.
JOURNAL OF QUATERNARY SCIENCE
(2021)
Review
Geography, Physical
Edayiliam Sreevidya, Adukkam V. Sijinkumar, Bejugam N. Nath
Summary: The Quaternary pteropod records from the late 1990s in the Indian Ocean offer valuable insights into past oceanographic and climatic changes. These aragonitic shell-bearing organisms are reliable indicators of ocean acidification, paleoceanography, and paleoclimate, but their ecology and taxonomy in the Indian Ocean remain poorly understood. Efforts to explore biogeochemical parameters and processes related to pteropod preservation are crucial for understanding their response to changing climate conditions.
Article
Geography, Physical
A. V. Sijinkumar, B. Nagender Nath, Sreerekh Prabhakar
Summary: Late Quaternary carbonate dissolution was evaluated by analyzing sediment cores from two different oceanographic settings in the Indian Ocean, showing variations in dissolution intensity and species diversity. Carbonate dissolution can serve as an important proxy for climatic and environmental changes.
QUATERNARY INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
A. Sijinkumar, B. Nagender Nath, K. B. Vinodkumar
PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY
(2020)
Article
Art
Adukam Veedu Sijinkumar, Kizhur Sandeep, Nazar Shinu, Vaniya Megha, Chandran Shyamini, Koottalakal Raghavan Sreeni, Kadakam Suvarna
INTERNATIONAL JOURNAL OF CONSERVATION SCIENCE
(2014)