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Air quality forecast at 10 km over North India
IITM Publication Highlights
Role of electrical effects in intensifying rainfall rates in the tropics
Lightning and heavy precipitation events in the tropics have significant socio-economic implications in regard to disaster management. The accurate prediction of these meteorological events has remained a challenge despite considerable improvement in the Numerical Weather Prediction (NWP) model over the years. In this paper, a possible roadmap has been discussed to improve the observed dry bias of rainfall by incorporating the electrically modified raindrop size distribution (RDSD) parameters in the model physics.
(Mudiar D., Hazra A., Pawar S.D., Karumuri R.K., Konwar M., Mukherjee Subrata, Srivastava M.K., Goswami B.N., Williams E., Geophysical Research Letters, 49: e2021GL096276, January 2022, DOI:10.1029/2021GL096276)
Quantifying the impact of biomass burning and dust storm activities on aerosol characteristics over the Indo-Gangetic Basin
The present study focused on first long-term comparative study to quantify the aerosol characteristics during the biomass burning (October-November) and dusty (April-June) periods using satellite measurements from 2004-2018 over the IGB in norther India. The finer particles were found to be dominant during the biomass burning period across the IGB. An increasing trend in AOD was pronounced over eastern to western IGB during the biomass burning period. However, a decreasing AOD trend was pronounced over the central to western IGB during dusty period. Aerosol types, potential source sectors and transport pathways were widely characterized over the IGB during these two contrasting periods.
(Singh A., Srivastava Atul K., Patak V., Shukla A.K., Atmospheric Environment, Online, December 2021, DOI:10.1016/j.atmosenv.2021.118893)
An intensification of atmospheric CO2 concentrations due to the surface temperature extremes in India
The terrestrial biosphere plays a pivotal role in removing carbon from the atmosphere. The removal processes are primarily affected by the presence of extreme temperature in the atmosphere. This study used surface CO2 flux observations and satellite retrieved columnar and mid-tropospheric CO2 concentrations to understand atmospheric CO2 variability and its transport patterns with anomalously high-temperature events.
(Gupta Smrati, Tiwari Y.K., Revadekar J.V., Deb Burman P.K., Chakraborty S., Gnanamoorthy P., Meteorology and Atmospheric Physics, 133, December 2021, DOI:10.1007/s00703-021-00834-w)
Characteristics of precipitation microphysics during Tropical Cyclone Nisarga (2020) as observed over the orographic region of Western Ghats in the Indian sub-continent
The characteristics of precipitation microphysics during various stages of the tropical cyclone (TC) Nisarga (2020) as observed over an orographic station of Western Ghats, India has been highlighted in this paper. The study examines the evolution of convective rain along with the features of surface raindrop size distribution (DSD) within the rainbands and eyewall of the cyclone “Nisarga” based on the observational data of Doppler weather radar and disdrometer during June 02–03, 2020.
(Chakravarty Kaustav, Arun N., Yadav P., Bhangale R., Murugavel P., Kanawade V.P., Mohmmad J., Hosalikar K.S., Pandithurai G., Atmospheric Research, 264: 105861, December 2021, DOI:10.1016/j.atmosres.2021.105861)
Changing status of tropical cyclones over the north Indian Ocean
Climatologically, the frequency of tropical cyclones (TCs) in the Bay of Bengal (BoB) is higher relative to that over the Arabian Sea (ARB). However, recent years exhibit a greater number of TCs forming in the ARB than in the BoB. During the study period (1982–2019), a significant increasing trend in the intensity, frequency, and duration of cyclonic storms (CS) and very severe CS (VSCS) is observed over the ARB.
(Deshpande M., Singh V.K., Ganadhi M.K., Roxy M.K., Emmanuel R., Kumar Umesh, Climate Dynamics, 57, December 2021, DOI:10.1007/s00382-021-05880-z)
New Publications
A MESO-scale Rain gauge NETwork-MESONET over Mumbai: Preliminary results and applications
Sunilkumar K., Das Subrata K., Kalekar P., Kolte Y., MuraliKrishna U. V., Deshpande S., Dani K.K., Nitha T.S., Hosalikar K.S., Narvekar M., Mohan K.N., Pandithurai G., Urban Climate, January 2022, DOI:10.1016/j.uclim.2021.101029
Relationships among lightning, rainfall, and meteorological parameters over oceanic and land regions of India
Tinmaker M.I.R., Ghude S.D., Dwivedi A.K., Islam S., Kulkarni S.H., Khare M., Chate D.M., Meteorology and Atmospheric Physics, February 2022, DOI:10.1007/s00703-021-00841-x
Energy conversion processes associated with the transition of low‑pressure area to monsoon depression during Indian summer monsoon: a study to evaluate GFS model fidelity
Sarkar S., Mukhopadhyay P., Dutta S., Meteorology and Atmospheric Physics, February 2022, DOI:10.1007/s00703-021-00838-6
Is meteorology a factor to COVID-19 spread in a tropical climate?
Anand V., Korhale N., Tikle S., Rawat M.S., Beig G., Earth Systems and Environment, 5, December 2021, DOI:10.1007/s41748-021-00253-2
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IITM Events
National (Training) Workshop on Greenhouse Gases (GHG-3)
(14-17 Dec 2021)
This workshop is intended to provide a venue to unify researchers from various scientific communities and share their information on the observational front.
In addition, a growing number of inverse modeling efforts from India is on an upraise in the recent past.
International Workshop on Fires in South Asia: Current status and future challenges in monitoring, modeling, predictions and mitigation
(03 Dec 2021)
Organized by The Integrated Land Ecosystem-Atmosphere Processes Study (iLEAPS), Centre for Development of Advanced Computing (C-DAC)-Pune and Indian Institute of Tropical Meteorology (IITM)
Supported by IGAC-MANGO and MAP-AQ
India International Science Festival (IISF-2021)
(29 Nov 2021)
Government of India in collaboration with Vijnana Bharati is organising the India International Science Festival (IISF) 2021 at NCPOR, Goa during 10-13 December 2021. The theme of IISF 2021 is ‘Celebrating Creativity in Science, Technology and Innovation for Prosperous India’.
Virtual lecture series-Cloud and Precipitation Physics and Dynamics
(ongoing since Oct 2021)
The lecture series aims to understand cloud and precipitation processes through the latest state-of-the-art approaches to observe, simulate, and identify key uncertainties associated with aerosol-cloud-precipitation interactions. The lectures will be delivered by some of the world's leading and renowned scientists.
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Watch lecturs (Oct 2021)
Watch lecturs (Nov 2021 onwards)