Tropical tropopause dynamics (TTD) campaigns over Indian region: An overview

MV Ratnam, SV Sunilkumar, K Parameswaran… - Journal of Atmospheric …, 2014 - Elsevier
It is widely accepted that the tropical tropopause is closely linked to climate change. Several
campaigns have already been conducted and also are being planned to address various …

Changing patterns in aerosol vertical distribution over South and East Asia

MV Ratnam, P Prasad, STA Raj, MR Raman… - Scientific reports, 2021 - nature.com
Changing patterns in aerosol concentrations over the Asian region is well documented with
a concurrent increase over India and a marked reduction over China. However, aerosol …

Elevated aerosol layer over South Asia worsens the Indian droughts

S Fadnavis, TP Sabin, C Roy, M Rowlinson, A Rap… - Scientific reports, 2019 - nature.com
Droughts have become more severe and recurrent over the Indian sub-continent during the
second half of the twentieth century, leading to more severe hydro-climatic and socio …

Global trends in the aerosol optical, physical, and morphological properties obtained using multi-sensor measurements

G Gupta, MV Ratnam, BL Madhavan… - Atmospheric …, 2023 - Elsevier
Numerous studies have been carried out to examine the trends in the rapidly changing
aerosol loading through the total Aerosol Optical Depth (AOD) but very few investigations …

Vertical and spatial distribution of elevated aerosol layers obtained using long-term ground-based and space-borne lidar observations

G Gupta, MV Ratnam, BL Madhavan, P Prasad… - Atmospheric …, 2021 - Elsevier
In this study, long-term ground-based and space-borne lidar measurements are used to
understand the vertical (surface to 30 km) and spatial distribution of aerosols. First, the …

Is the atmospheric boundary layer altitude or the strong thermal inversions that control the vertical extent of aerosols?

P Prasad, G Basha, MV Ratnam - Science of The Total Environment, 2022 - Elsevier
It is well known that the atmospheric boundary layer (ABL) plays a significant role in
controlling the variability of atmospheric constituents such as aerosols and trace-gases …

Vertical and horizontal distribution of submicron aerosol chemical composition and physical characteristics across northern India during pre-monsoon and monsoon …

J Brooks, JD Allan, PI Williams, D Liu… - Atmospheric …, 2019 - acp.copernicus.org
The vertical distribution in the physical and chemical properties of submicron aerosol has
been characterised across northern India for the first time using airborne in situ …

Identification of the Asian summer monsoon anticyclone based on tropical easterly and subtropical westerly jets during active and break phases

PP Musaid, SK Mehta, S Tegtmeier… - International Journal …, 2024 - Wiley Online Library
The Asian summer monsoon anticyclone (ASMA) plays a vital role in the transport and
redistribution of the tracers in the upper troposphere and lower stratosphere during transient …

Source apportionment of rainwater chemical composition to investigate the transport of lower atmospheric pollutants to the UTLS region

CD Jain, BL Madhavan, MV Ratnam - Environmental Pollution, 2019 - Elsevier
Efforts to understand the chemical composition of Asian Tropopause Aerosol Layer (ATAL)
in the Upper Troposphere Lower Stratosphere (UTLS) region have revealed the dominance …

Aerosol classification using fuzzy clustering over a tropical rural site

AS Krishnaveni, BL Madhavan, MV Ratnam - Atmospheric Research, 2023 - Elsevier
Exact knowledge on the types of aerosols present over a region is very important in the
radiative forcing estimates. Several techniques are available to classify aerosols, which …