भारतीय उष्णदेशीय मौसम विज्ञान संस्थान
Indian Institute of Tropical Meteorology
पृथ्वी विज्ञान मंत्रालय, भारत सरकार का एक स्वायत्त संस्थान
An Autonomous Institute of the Ministry of Earth Sciences, Govt. of India
Scientist Profile
Ms. Chaitri Roy
Designation
: Scientist D
Phone
: +91-(0)20-25904843
Fax
: +91-(0)20-25865142
Email ID
: chaitri[dot]cat[at]tropmet[dot]res[dot]in
| Degree | University | Year | Stream |
|---|---|---|---|
| Ph. D | Savitribai Phule Pune University (SPPU) | 2018-current | Atmospheric and Space Sciences |
| M.Sc. | University of Calcutta | 2012 | Chemistry |
| B.Sc. | University of Calcutta | 2010 | Chemistry |
Dynamics and chemistry of the upper troposphere and lower stratosphere (UTLS)
Ozone variability in the UTLS
Variability of trace gases and aerosols, and their relation with Asian monsoon
Chemistry climate modelling
| Award Name | Awarded By | Awarded For | Year |
|---|---|---|---|
| Fulbright Kalam Doctoral Fellowship | The J. William Fulbright Foreign Scholarships Board (FSB), Washington D.C., U.S.A. and Department of Science & Technology, Ministry of Science & Technology, Government of India | Excellence in scientific research | 2020-2021 |
| Roland Schlich travel grant | European Geosciences Union | To present paper at EGU general assembly 2020 | 2020 |
| National Space Science Symposium (NSSS) Best Paper Award | Pune University, ISRO and IUCAA | Best Paper | 2019 |
| Best Presentation Award | IITM, Pune & ICTP, Italy | Best presentation | 2016 |
| Best Poster Award | Indian Institute of Science, Bangalore | Best poster presentation | 2015 |
| Year | Designation | Institute |
|---|---|---|
| 2022-Present | Scientist D | Indian Institute of Tropical Meteorology, Pune |
| 2018-2021 | Scientist C | Indian Institute of Tropical Meteorology, Pune |
| 2014-2017 | Scientist B | Indian Institute of Tropical Meteorology, Pune |
| 2012-2013 | Trainee scientist | Indian Institute of Tropical Meteorology, Pune |
Research Highlight
Figure: Vertical cross-section of ozone anomaly (ppb) from the edges of anticyclone over NI and TP as seen from (a) ERA-Interim and, (b) ECHAM5-HAMMOZ. Black thick line indicates tropopause.
The stratospheric ozone rich cold intrusion during El‐Niño over the Indian region: implication during the Indian summer monsoon
We investigated ozone variability due to stratospheric intrusions in the upper troposphere over India and associated radiative impacts during monsoon breaks co‐occurring with El Niño using the ECHAM5‐HAMMOZ, Global‐Chemistry‐climate model simulations, and ERA‐Interim reanalysis data. During El Niño, deep stratospheric intrusions occur at the North India ‐ Tibetan Plateau region and the eastern edge of the monsoon anticyclone. The intrusions frequently penetrate deep into the troposphere which enhances the surface ozone levels by ~10–20 ppb and augments radiative forcing by ~0.33 W m−2 at the top of the atmosphere. (Roy et al., 2020, https://doi.org/10.1002/joc.6680)