Seasonal stratospheric intrusion of ozone in the upper troposphere over India
The Model for Ozone and Related chemical Tracers-2 (MOZART-2) is used to examine the evolution of pollutant O<sub>3</sub> in the upper troposphere over the Indian region. Vertical profiles of ozone mixing ratio retrieved from Microwave Limb Sounder (MLS) aboard Earth Observing System...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2010-11-01
|
| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/28/2149/2010/angeo-28-2149-2010.pdf |
| Summary: | The Model for Ozone and Related chemical Tracers-2 (MOZART-2) is used to
examine the evolution of pollutant O<sub>3</sub> in the upper troposphere over the
Indian region. Vertical profiles of ozone mixing ratio retrieved from
Microwave Limb Sounder (MLS) aboard Earth Observing System (EOS) AURA
satellite for the period 2005–2009 and Tropospheric Emission Spectrometer
(TES) aboard (EOS) AURA for the period 2006–2007 has been analyzed. The
satellite observations reveal the evidence of downward propagation of ozone
(100–200 ppb) due to stratospheric intrusion during the winter and
pre-monsoon seasons. The regular feature of enhancement of ozone in the
upper troposphere over India is presented. Results obtained by the MOZART-2
simulations (for years 2000–2005) confirm the observations and indicate
stratospheric intrusion of O<sub>3</sub> during winter and pre-monsoon seasons.
Observed enhanced O<sub>3</sub> mixing ratio in the upper troposphere is explained
by, variation of Potential Vorticity (PV), tropopause pressure, relative
humidity and CO-O<sub>3</sub> correlation. |
|---|---|
| ISSN: | 0992-7689 1432-0576 |