Mohar Chattopadhyay is an atmospheric scientist working at the NASA Global Modeling and Assimilation Office in Greenbelt, Maryland, USA for the last 9 years. She is adept at handling large volume of satellite and conventional data, their evaluation, model development, data assimilation, large-scale climate data analysis and climate variability. Her primary focus is on the development of reanalysis system based on Goddard Earth Observing System (GEOS), MERRA-21C. She is a shilled numerical modeler with work experience in New Zealand, Australia and the USA. Mohar has worked with numerous modeling systems including UKMO’s UM, MM5/WRF and Australian Bureau of Meteorology (BoM) models GASP/LAPS and ACCESS model and 4DVAR data assimilation systems. She has worked with the CSIRO's Cubic Conformal Model (CCAM) for climate simulation. More recently, Mohar has worked at NOAA/NESDIS/STAR/JCSDA on Cloudy Radiance assimilation and Microwave Integrated Retrieval Systems (MiRS). She obtained her doctorate degree in Atmospheric Physics from the University of Canterbury, Christchurch, New Zealand in 2003.
Mohar Chattopadhyay
(SENIOR RESEARCH SCIENTIST)
| Email: | mohar.chattopadhyay@nasa.gov |
| Phone: | 301.614.6800 |
| Org Code: | 610.1 |
| Address: |
NASA/GSFC Mail Code 610.1 Greenbelt, MD 20771 |
| Employer: | SCIENCE SYSTEMS AND APPLICATIONS INC |
Brief Bio
Positions/Employment
Lead Research Scientist
Science Systems And Applications INC - NASA/GSFC, Greenbelt , MD 20771, USA
January 2016 - Present
· Preparation, assimilation and validation of observations for NASA reanalysis systems: Goddard Earth Observation System for Instrument Teams (GEOS-IT) and Modern-Era Retrospective analysis for Research and Applications, 21st Century (MERRA-21C)
· Assimilation of commercial and non-commercial GNSS RO bending angle data in NASA systems
· System assessment and validation of pre-operational version of NASA GEOS Atmospheric Data Assimilation System
· Evaluation of hurricane tracks and their statistical analysis for NASA GEOS operational model
· Analysis, evaluation and assimilation of historical and novel conventional observations (GNSS RO, Atmospheric Motion Vectors and Surface Pressure) and satellite radiances (AVHRR and AMSU-A).
Senior Staff Scientist
AER Inc. at NOAA/STAR/JCSDA - College Park, Maryland, USA
July 2014 - December 2015
- Cloudy Radiance Data Assimilation
- Microwave Integrated Retrieval System (MiRS)
Research Scientist
Commonwealth Scientific and Industrial Research Organization (CSIRO) - Aspendale, Victoria, Australia
August 2009 - June 2014
- Tropical Cyclone Research based on large scale data analysis and regressions to build TC index for the South Pacific region
- Regional Climate Modelling based on model simulations and analysis
- Renewable energy assessment using high resolution Regional Climate Model simulation: model implementation, development and product for renewable energy assessment
Data Assimilation Scientist
Australian Bureau of Meteorology (BoM) - Melbourne, Victoria, Australia
July 2005 - July 2009
- 4D Var Data Assimilation in BoM’s ACCESS model: model development, 4DVar Data assimilation, pre-operational setup.
- Development of a high resolution model for BoM’s wind energy forecasting system(MALAPS): model development, data assimilation and pre-operational testing
Mesoscale Modeller
Met. Service NZ - Wellington, NZ
January 2002 - December 2004
Education
- 2003 : PhD in Atmospheric Physics, University of Canterbury, Christchurch, NZ
- 1997 : MSc in Physics, University Department of Chemical Technology, University of Mumbai, India
- 1994 : BSc in Physics, University of Mumbai
Awards
- NASA GMAO Peer Award for Scientific Achievement, 2024 as a part of MERRA-21C team
- World Meteorological Day 2010, Bureau Excellence Award presented to the members of ACCESS model development team
- CSIRO Award for Science Excellence 2013: Award presented to the members of ACCESS model development team
Other Professional Information
· Google Scholar Research Items : 43
Citations: 312
h-index : 7
i10-index : 7
https://scholar.google.com/citations?user=BjbNDy4AAAAJ&hl=en
Selected Publications
Refereed
2023. "Direct assimilation of AVHRR satellite radiance measurements in a reanalysis system." Quarterly Journal of the Royal Meteorological Society [10.1002/qj.4583] [Journal Article/Letter]
2021. "Assessing Sensitivity of MERRA-2 to AMSU-A in the Upper Stratosphere." Journal of Atmospheric and Oceanic Technology 38 (3): 629-643 [10.1175/jtech-d-19-0187.1] [Journal Article/Letter]
2014. "Simulating the climate of South Pacific islands using a high resolution model ." International Journal of Climatology 35 (6): 1157-1171 [Journal Article/Letter]
2013. "Implementation of the initial ACCESS numerical weather prediction system." Aust. Meteorol. Oceanogr. Journal 63 265:284 [Journal Article/Letter]
2012. "On the variability of projected tropical cyclone genesis in GCM ensembles." Tellus 64 [DOI: 10.3402/tellusa.v64i0.18696] [Journal Article/Letter]