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Dr. Uma Das
Ph.D. [Physical Research Laboratory, Ahmedabad]
Subject : Physics
Email : uma AT iiitkalyani.ac.in


Research Interests:

Space and Atmospheric Sciences, Satellite Data Mining, Atmospheric Dynamics, Ionosphere, Tides and Planetary Waves

SPONSORED PROJECTS


‘Early Career Research Award’ by Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Govt. of India Title: ‘Short-term Variability in Sun-Synchronous and Non-Sun Synchronous Tides in the Middle Atmosphere from Investigations of Contemporaneous Satellite, Model and Reanalysis Data’, Project Value = ~20.31 Lakhs, Duration May 2018 – May 2021
Man Power: 1 Junior Research Fellow


PUBLICATIONS IN PEER REVIEWED JOURNALS

*Papers that received Recognition (3); Corresponding Author (Underlined) No. of Citations: According to Research Gate Statistics.

1. Uma Das, Ward, W. E., Pan, C. J., and Das, S. K., “Migrating and NonMigrating Tides Observed in the Stratosphere from FORMOSAT-3/COSMIC Temperature Retrievals”, Annales Geophysicae, 38, 421–435, https://doi.org/10.5194/angeo-38-421-2020, 2020. (SCI, Impact Factor: 1.585)

2. Chen-Jeih Pan, Shih-Sian Yang, Uma Das, Wei-Sheng Chen, “Morphology of the wavenumber 1 and wavenumber 2 stratospheric Kelvin waves using the long-term ERA-Interim reanalysis dataset”, Atmosphere,11,421; doi:10.3390/atmos11040421,2020.(SCIE & SCOPUS, Impact Factor: 2.046).

3. Wei-Sheng Chen, C.J. Pan, Uma Das, “The mean zonal wind effect on the long-term variation of ultra-fast Kelvin waves in the mesosphere and lower thermosphere and in the upper stratosphere”, J. Atmos. Sol. Terr. Phys., 179, 459–467, doi: 10.1016/j.jastp.2018.10.006, 2018.

4. Uma Das and C. J. Pan, “Influence of El Nino Southern Oscillation on Equatorial Atmospheric Kelvin waves”, Science of Total Environment, 544, 908-918, doi:10.1016/j.scitotenv.2015.12.009, 2016. [Impact Factor: 4.099, Citation: 0]

5. S. S. Yang, C. J. Pan, Uma Das and H. C. Lai, “Analysis of Synoptic Scale Controlling Factors in the Distribution of Gravity Wave Potential Energy”, J. Atmos. Sol. Terr. Phys., 135, 126-135, doi:10.1016/j.jastp.2015.10.020, 2015. [Impact Factor: 1.474, Citation: 0]

6. D. Selvaraj, A. K. Patra, H. Chandra, H. S .S. Sinha, Uma Das, “Scattering cross section of mesospheric echoes and turbulence parameters from Gadanki radar observations”, J. Atmos. Sol. Terr. Phys., 119, 162–172, doi:10.1016/j.jastp.2014.08.004, 2014. [Impact Factor: 1.751, Citation: 2]

7. Uma Das and C. J. Pan, “Validation of FORMOSAT-3/COSMIC ‘atmprf’ global temperature data in the Stratosphere”, Atmospheric Measurement Techniques, 7, 731–742, doi:10.5194/amt-7-731-2014, 2014. [Impact Factor: 3.206, Citation: 8]

8. *Lim Eng Sing, Uma Das, C. J. Pan, Khiruddin Abdullah, and C. J. Wong, “Investigating Variability of Outgoing Longwave Radiation over Peninsular Malaysia using Wavelet Transform”, J. Climate, 26, 3415–3428, doi:10.1175/JCLI-D-12-00345.1, 2013. [Impact Factor: 4.362, Citation: 1]

9. Uma Das and C. J. Pan, “Strong Kelvin Wave Activity Observed during the Westerly Phase of QBO - A Case Study”, Ann. Geophys., 31, 581–590, doi:10.5194/angeo-31-581-2013, 2013. [Impact Factor: 1.518, Citation: 4]

10. H. Chandra, H. S. S. Sinha, A. K. Patra, Uma Das, D. Selvaraj, R. N. Misra, and Jayati Datta, ‘Low latitude mesospheric turbulence investigated using coordinated MST radar and rocket-borne observations from India’, J. Geophys. Res., 117, D22109, doi:10.1029/2011JD016946, 2012. [Impact Factor: 3.021, Citation: 2]

11. Uma Das and C. J. Pan, ‘The Temperature Structure of Mesosphere over Taiwan and comparison with other Latitudes’, J. Geophys. Res., 116, D00P06, doi:10.1029/2010JD015034, 2011. [Impact Factor: 3.303, Citation: 2]

12. *Uma Das, C. J. Pan, H. S. S. Sinha, “Effects of Solar Cycle Variations on Oxygen Green Line Emission Rate over Kiso”, Earth Planets Space, 63, 941–948, 2011. [Impact Factor: 1.112, Citation: 4]

13. C. J. Pan, Uma Das, S. S. Yang, C. J. Wong and H. C. Lai, “Investigation of Kelvin waves in the Stratosphere Using FORMOSAT-3/COSMIC Temperature Data”, J. Meteor. Soc. Japan., 89A, 83-86, 2011. [Impact Factor: 1.149, Citation: 4]

14. *Uma Das, Duggirala Pallamraju and S. Chakrabarti, “Effect of an X‐Class solar flare on the OI 630 nm dayglow emissions”, J. Geophys. Res., 115, A08302, doi:10.1029/2010JA015370, 2010. [Impact Factor: 3.082, Citation: 4]

15. Uma Das and H. S. S. Sinha, “The Winter Equatorial Mesospheric Neutral Turbulence“, Curr. Sci., 99, 1, 80-85, 2010. [Impact Factor: 0.782, Citation: 2]

16. Duggirala Pallamraju, Uma Das and S. Chakrabarti, “Short- and long-timescale thermospheric variability as observed from OI 630.0 nm dayglow emissions from low-latitudes”, J. Geophys. Res, 115, A06312, doi:10.1029/2009JA015042, 2010. [Impact Factor: 3.082, Citation: 10]

17. Patra, A. K., N. Venkateswara Rao, D. V. Phanikumar, H. Chandra, Uma Das, H. S. S. Sinha, T. K. Pant, and S. Sripathi, “A study on the low-latitude daytime E region plasma irregularities using coordinated VHF radar, rocket-borne, and Ionosonde observations”, J. Geophys. Res., 114, A11301, doi:10.1029/2009JA014501, 2009. [Impact Factor: 3.147, Citation: 6]

18. Uma Das, H. S. S. Sinha, Som Sarma, H. Chandra and Sanat K. Das, “Fine Structure of the Low Latitude Mesospheric Turbulence”, J. Geophys. Res., 114, D10111, doi:10.1029/2008JD011307, 2009. [Impact Factor: 3.147, Citation: 12]

19. Uma Das and H. S. S. Sinha, ‘Long term variations in oxygen green line emission over Kiso, Japan from ground photometric observations using continuous wavelet transform’, J. Geophys. Res., 113, D19115, doi:10.1029/2007JD009516, 2008. [Impact Factor: 2.953, Citation: 10]

20. H. Chandra, H. S. S. Sinha, Uma Das, R. N .Misra, S. R. Das, Jayati Datta, S. C. Chakravarty, A. K. Patra, N. Venkateswara Rao and D. Narayan Rao, ‘First mesospheric turbulence study using coordinated rocket and MST radar measurements over Indian low latitude region’, Ann. Geophys, 26, 2725–2738, 2008. [Impact Factor: 1.427, Citation: 12]