GOPIKRISHNAN G S
GOPIKRISHNAN G S
21CL92P01
Reseacrh
Publications

Air-sea interactions of Ozone, Temperature and Water Vapour

Ozone and water vapour are two important climate relevant trace gases in the atmosphere, and temperature is one of the most significant climate parameters. Therefore, careful and consistent monitoring of these gases and temperature is essential for understanding temporal and spatial changes of these parameters in the past and thus, predicting expected changes of climate in future.

Long-term monitoring of trace gases also demands novel techniques and new sensors for continued environmental surveillance. The INSAT-3D/3DR instruments are the contributions of India towards understanding temporal evolution and spatial variability of these traces gases, and their connection with climate.

Since it is necessary to validate new measurements prior to their scientific use, we propose the validation and accuracy estimation of ozone, temperature and water vapour retrievals of the INSAT- 3D/3DR measurements. These validated measurements then will be used for the studies on Monsoon Inversion over the north Indian Ocean region and ozone-ENSO relationships in the tropics.

Objectives

• Comprehensive validation, error estimation and drift analysis of INSAT ozone, temperature and water vapour retrievals.
• Assessment of differences between INSAT-3D and 3DR measurements
• Analysis of variability and trends (supplemented by other data sets) in ozone, temperature and water vapour over Indian regions as observed by INSAT and other satellite measurements

Importance

• Predicting expected changes of climate and mitigation methods.
• Better instrumentation for Satellite sensors.

PUBLICATIONS

• PEER-REVIEWED

Gopikrishnan, G.S., Kuttippurath, J., Raj, S., Singh, A. and Abbhishek, K., 2022. Air Quality during the COVID–19 Lockdown and Unlock Periods in India Analyzed Using Satellite and Ground-based Measurements. Environmental Processes, 9(2), pp.1-21.

Kuttippurath, J., Abbhishek, K., Gopikrishnan, G.S. and Pathak, M., 2022. Investigation of long–term trends and major sources of atmospheric HCHO over India. Environmental Challenges, 7, p.100477.

Kuttippurath, J., Feng, W., Müller, R., Kumar, P., Raj, S., Gopikrishnan, G.P. and Roy, R., 2021. Exceptional loss in ozone in the Arctic winter/spring of 2019/2020. Atmospheric Chemistry and Physics, 21(18), pp.14019-14037.

Gopikrishnan, G.S. and Kuttippurath, J., 2020. A decade of satellite observations reveal significant increase in atmospheric formaldehyde from shipping in Indian Ocean. Atmospheric Environment, p.118095.

CONFERENCES