Dr. Manajit Sengupta
Dr. Manajit Sengupta
Research Scientist II
Office: CIRA Room 115, Fort Collins
Phone: 970-491-8517
Fax: 970-491-8241
Mailing Address:
Dr. Manajit Sengupta
Cooperative Institute for Research in the Atmosphere
Colorado State University
1375 Campus Delivery
Fort Collins, CO 80523-1375
E-mail:
Biography

Manajit Sengupta received his B.Sc. with Honors in Physics from Calcutta University and his Ph.D. in Meteorology (2002) from The Pennsylvania State University. He is interested in understanding the transfer of radiation in clouds using both satellite and ground based remote sensing. He is also interested in 4-dimensional variational (4d-Var) data assimilation and works on assimilation of satellite radiances in cloudy atmospheres to improve prediction of clouds in the mesoscale. Additionally Dr. Sengupta is interested in developing techniques to create synthetic imagery of severe weather events and fires that are used to develop remote sensing algorithms for future satellites. Dr. Sengupta worked at the US DOE Pacific Northwest National Laboratory before joining CIRA as a Research Scientist in 2003. His work involved understanding the radiative properties of stratus clouds and how they influence solar radiation reaching the surface. He also resolved a decades old problem involving anomalous absorption in clouds. Since 2003 he has worked on directly assimilating GOES satellite radiances in cloudy atmospheres using the Regional Atmospheric Modeling Data Assimilation System (RAMDAS) to improve cloud prediction in the mesoscale. He has also worked on creating high quality synthetic imagery for hurricanes, thunderstorms and fires for the GOES-R Advanced Baseline Instrument (GOES-R ABI). The synthetic imagery is used by NOAA’s GOES-R Algorithm Working Group (AWG) for creating new algorithms to be used when GOES-R ABI launches in 2014. Dr. Sengupta is a member of the GOES-R AWG.

Recent Work
Figure

Above: The figure on the left shows a simulated pointspread function for the 3.9 micrometer channel for the GOES-R ABI instrument. This pointspread function was used to create the image on the right hand side which represents the variation in the brightness temperature of a 500 m by 500 m fire burning at approximately 1000 K based on the location of the fire within a GOES-R pixel. The point to note here is the large brightness temperature variability based solely on fire location.

Selected Publications

Grasso, L., M. Sengupta, J. F. Dostalek, R. Brummer and M. DeMaria, 2008: Synthetic satellite imagery for current and future environmental satellites. Int. J. Remote Sensing accepted for publication.

 Vukicevic, T., M. Sengupta, A. S. Jones, T. Vonder Haar, 2006: Cloud Resolving Satellite Data Assimilation: Information content of IR window observations and uncertainties in estimation; J. Atmos. Sci, 63, 901-919.
 
Sengupta, M. and T. P. Ackerman, 2003: Investigating anomalous absorption using surface measurements; J. Geophys. Res., doi:10.1029/2003JD003411.
 
Sengupta, M., E. E. Clothiaux, T. P. Ackerman, S. Kato and Q. Min, 2003: Importance of accurate liquid water path for estimation of solar radiation in warm boundary layer clouds: An observational study; J. Clim., 16, 2997-3009.
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