Sciences and Exploration Directorate

Brief Bio


Dr. Ganeshan studies the behavior of the planetary boundary layer (PBL) in polar regions using in-situ measurements and satellite data, with 10 years of experience using GNSS RO satellites for PBL retrieval. Improved PBL measurements from space are a high priority for NASA and the NASA Decadal Survey Incubation program.She is a 2017 Fellow of the International Arctic Science Committee (IASC), and is involved in the scientific activities of the Atmospheric Working group. She also contributes to research in the Global Modeling and Data Assimilation (GMAO) office at Goddard, where she runs the GEOS model and data assimilation experiments focused on improving the representation of Polar Lows and Tropical Cyclones (TCs).

Research Interests


Planetary boundary layer, Global Navigation Satellite System (GNSS) Radio Occultation (RO), atmospheric turbulence, polar weather and climate, polar lows, tropical cyclones, PBL-cloud interactions, surface-atmosphere coupling, surface radiation and mass balance in polar regions.

Solar System: Atmospheres


Studying atmospheric boundary layer properties using remote sensing observations including GNSS RO.

Earth Science: Remote Sensing


Modeling and data assimilation, numerical weather prediction, forecast verification, and improving sub-grid scale processes in climate models based on guidance from satellite and in-situ observations.

Solar System: Earth

Current Projects


Characterizing polar PBL height and their properties with GNSS RO measurements

Remote Sensing

 My work involves developing an algorithm to retrieve PBL properties over the data-sparse Arctic ocean using GNSS radio occultation measurements. I use ground truth (radiosonde observations) to aid the development and validation of the algorithm. I also try to compare and validate the satellite-derived PBL properties to model and reanalyses products with an aim to improve boundary layer and cloud parameterizations over polar regions.


Using satellite observations, in-situ data, and reanalyses to characterize stable and mixed boundary layers in Antarctica, and to investigate impacts on the surface radiation budget.

Earth


Using AIRS and CrIS data to understand processes affecting Tropical Cyclone structure in a global data assimilation and forecasting framework

Atmospheres

Studying the impact of assimilating cloud-cleared infrared radiances on Polar Lows in Antarctica and Arctic.

Positions/Employment


Associate Scientist, Earth Sciences

Universities Space Research Association - NASA Goddard Space Flight Center Bldg. 33, Rm. C305

October 2016 - Present


Postdoctoral Scientist

Universities Space Research Association - NASA Goddard Space Flight Center

October 2013 - October 2016


Graduate Research Assistant

University of Maryland - University of Maryland, College Park

August 2008 - September 2013

 

Education


 
Ph.D. in Atmospheric and Oceanic Science from University of Maryland, College Park (Dec. 2013)

 Bach. of Engineering (Environmental) from Kolhapur Institute of Technology's College of Engineering,  Kolhapur (May 2008)

Professional Societies


American Geophysical Union

2009 - Present


American Meteorological Society

2009 - Present


International Arctic Science Committee (IASC)

Fellow (Atmospheric Working Group)

2017 - Present


Interagency Arctic Research Policy Committee, Arctic Research Consortium of the U.S. (IARPC)

2017 - Present


Scientific Committee on Antarctic Research

2017 - Present


Arctic Research Consortium of the U.S. (ARCUS)

2017 - Present

Professional Service


 Reviewer for Journal of Geophysical Research-Atmospheres, Climate Dynamics, Urban Climate, and Atmospheric Measurement Techniques. Reviewer for NASA Earth and Space Science Fellowship and NASA Postdoctoral Program proposals.

Awards


• Best first-authored paper in annual Climate and Radiation Laboratory awards ceremony (2019).

• 2017 International Arctic Science Committee (IASC) Fellow in the Atmosphere Working Group 
• Graduate Student Fellow in Earth System Science by Earth System Science Interdisciplinary  Center (ESSIC) and NASA Goddard Space Flight Center (2009-2013).
• Bayer and UNEP environmental envoy (2006-2007).

 

Other Professional Information


 Short-term Consultant, Climate Investment Funds, The World Bank, Washington, D.C. (2011)

 Intern, Bhabha Atomic Research Center (BARC), Mumbai (2007 - 2008)

 Intern, Bharat Petroleum Corporation Limited (BPCL), Mumbai (2006)

Selected Publications


Refereed

Yang, Y., D. Kiv, S. Bhatta, et al. M. Ganeshan, X. Lu, and S. Palm. 2023. Diagnosis of Antarctic Blowing Snow Properties Using MERRA-2 Reanalysis with a Machine Learning Model Journal of Applied Meteorology and Climatology 62 (8): 1055–1068 [10.1175/jamc-d-23-0004.1]

Ganeshan, M., Y. Yang, and S. P. Palm. 2022. Impact of Clouds and Blowing Snow on Surface and Atmospheric Boundary Layer Properties Over Dome C, Antarctica Journal of Geophysical Research: Atmospheres 127 (21): [10.1029/2022jd036801]

Ganeshan, M., O. Reale, E. McGrath-Spangler, and N. Boukachaba. 2022. Impact of assimilating adaptively thinned AIRS cloud-cleared radiances on the analysis of Polar Lows and Mediterranean Sea Tropical-like Cyclone in a global modeling and data assimilation framework Weather and Forecasting 37 (7): 1117–1134 [10.1175/waf-d-21-0068.1]

Wu, D. L., J. Gong, and M. Ganeshan. 2022. GNSS-RO Deep Refraction Signals from Moist Marine Atmospheric Boundary Layer (MABL) Atmosphere 13 (6): 953 [10.3390/atmos13060953]

McGrath‐Spangler, E. L., M. Ganeshan, O. Reale, et al. N. Boukachaba, W. McCarty, and R. Gelaro. 2021. Sensitivity of low tropospheric Arctic temperatures to assimilation of AIRS cloud‐cleared radiances: Impact on mid‐latitude waves Quarterly Journal of the Royal Meteorological Society 147 (741): 4032-4047 [10.1002/qj.4166]

Ganeshan, M., and Y. Yang. 2019. Evaluation of the Antarctic boundary layer thermodynamic structure in MERRA2 using dropsonde observations from the Concordiasi campaign Earth and Space Science (6): 2397-2409 [10.1029/2019ea000890]

Ganeshan, M., and Y. Yang. 2018. A Regional Analysis of Factors Affecting the Antarctic Boundary Layer During the Concordiasi Campaign Journal of Geophysical Research: Atmospheres [10.1029/2018jd028629]

Ganeshan, M., and D. L. Wu. 2016. The open-ocean sensible heat flux and its significance for Arctic boundarylayer mixing during early fall Atmospheric Chemistry and Physics 16 (20): 13173-13184 [10.5194/acp-16-13173-2016]

Ganeshan, M., and R. Murtugudde. 2015. Nocturnal propagating thunderstorms may favor urban “hot-spots”: A model-based study over Minneapolis Urban Climate 14 (Part 4): 606-621 [10.1016/j.uclim.2015.10.005]

Ganeshan, M., and D. L. Wu. 2015. An investigation of the Arctic inversion using COSMIC RO observations J. Geophys. Res. Atmos 120 (18): 9338-9351 [10.1002/2015JD023058]

Talks, Presentations and Posters


Invited

Investigating the representation of Antarctic surface stability and Antarctic Polar Low in the NASA GEOS model framework. Oral presentation, Climate and Radiation Laboratory Seminar Series, NASA, Greenbelt, USA, May 2019.

June 2019


Representation of spring season Antarctic boundary layer and polar lows in the NASA Global Modeling Framework. Oral presentation, Earth System Science Interdisciplinary Center Seminar, College Park, USA, Nov. 2018.

December 2018


Cloud and boundary layer investigations in climate studies. Oral presentation, Department of Physics and Astronomy Seminar Series, Howard University, Washington D.C., USA, Oct. 2015

November 2015


Investigation of Arctic boundary layer processes using ship-based and COSMIC RO observations. Oral presentation, Climate and Radiation Laboratory Seminar Series, NASA, Greenbelt, USA, May 2015.

June 18, 2015


Other

Ganeshan, M., E. McGrath-Spangler, O. Reale, W. McCarty, and R. Gelaro (2019). Impact of assimilating AIRS cloud-cleared radiances on the analysis and forecasts of Polar Lows. Poster presentation, Year of Polar Prediction (YOPP) Arctic Science Workshop, Helsinki, Finland.

February 2019


McGrath-Spangler, E., M. Ganeshan, O. Reale, W. McCarty, and R. Gelaro (2019). Impact of assimilating AIRS cloud-cleared radiances on atmospheric dynamics and boundary layer height at high latitudes. Oral presentation, Year of Polar Prediction (YOPP) Arctic Science Workshop, Helsinki, Finland.

February 2019


Ganeshan, M., and Y. Yang (2019). Evaluation of MERRA2 surface stability over Antarctica: Comparisons with the spring 2010 Concordiasi campaign. Poster presentation, Year of Polar Prediction (YOPP) Arctic Science Workshop, Helsinki, Finland.

February 2019


Reale, O., E. McGrath-Spangler, M. Ganeshan, W. McCarty, and R. Gelaro (2018). Impact of assimilating cloud-cleared and adaptively thinned infrared hyperspectral data on tropical cyclones in a global data assimilation and forecast framework. Oral presentation, The AGU Fall Meeting, Washington D.C., USA.

2018


McGrath-Spangler, E., M. Ganeshan, O. Reale, W. McCarty, and R. Gelaro (2018). Impact of assimilating AIRS cloud-cleared radiances on atmospheric dynamics and polar low representation at high latitudes. Oral presentation, The AGU Fall Meeting, Washington D.C., USA.

2018


Ganeshan, M., and Y. Yang (2018). An evaluation of the lower atmospheric stability over Antarctica and related boundary layer processes in MERRA2. Poster presentation, The AGU Fall Meeting, Washington D.C., USA.

2018


Reale, O., E. McGrath-Spangler, M. Ganeshan, W. McCarty, and R. Gelaro (2018). Impact of assimilating cloud-cleared and adaptively thinned infrared hyperspectral data on tropical cyclones in a global data assimilation and forecast framework. Oral presentation, NASA Sounder Science Team Meeting, Greenbelt, USA.

November 2018


McGrath-Spangler, E., M. Ganeshan, O. Reale, W. McCarty, and R. Gelaro (2018). Impact of assimilating AIRS cloud-cleared radiances on atmospheric dynamics at high latitudes. Oral presentation, NASA Sounder Science Team Meeting, Greenbelt, USA.

November 2018


Ganeshan, M., E. McGrath-Spangler, O. Reale, W. McCarty, and R. Gelaro (2018). Impact of assimilating AIRS cloud-cleared radiances on Antarctic Polar Lows. Oral presentation, NASA Sounder Science Team Meeting, Greenbelt, USA.

November 2018


Ganeshan, M., and Y. Yang (2018). Regional analysis of factors affecting the Antarctic boundary layer during the Concordiasi campaign. Poster presentation, Polar18, Davos, Switzerland.

July 2018


Ganeshan, M., and Y. Yang (2017). The mixed Antarctic boundary layer: An analysis based on Concordiasi dropsonde observations during spring 2010. Oral presentation, The AGU Fall Meeting, New Orleans, USA.

2017


Yang, Y., M. Ganeshan, S. P. Palm, and A. Marshak (2017). Antarctic Boundary Layer Structure Under Cloudy and Blowing Snow Conditions: A Study with CALIOP and Dropsonde Observations. Poster presentation, The AGU Fall Meeting, New Orleans, USA.

2017


Ganeshan M., and D. L. Wu (2017). The atmospheric boundary layer response to the dynamic new Arctic Ocean during fall. Oral presentation, The Arctic Science Summit Week, Prague, Czech Republic.

May 2017


Ganeshan M., and D. L. Wu (2016). The atmospheric boundary layer response to the dynamic new Arctic Ocean. Poster presentation, The AGU Fall Meeting, San Francisco, USA.

2016


Wu, D. L., L. Boisvert, D. Klaus, K. Dethloff, and M. Ganeshan (2016). Observational constraints on Arctic boundary-layer clouds, surface moisture and sensible heat fluxes. Oral presentation, The AGU Fall Meeting, San Francisco, USA.

2016


Ganeshan M., and D. L. Wu (2016). How is the atmospheric boundary layer responding to the dynamic new Arctic Ocean? Oral presentation, CLIVAR Open Science Conference, Qingdao, China.

October 2016


Ganeshan M., and D. L. Wu (2016). How does Greenland’s boundary layer inversion respond to surface warming? Poster presentation, CLIVAR Open Science Conference, Qingdao, China.

October 2016


Ganeshan M., and D. L. Wu (2015). Using GPS Radio Occultation to study polar boundary layer properties. Poster presentation, The AGU Fall Meeting, San Francisco, USA.

2015


Ganeshan M., and D. L. Wu (2015). An investigation of the Arctic Inversion using COSMIC RO Observations. Oral presentation, Third Annual Young Scientist Forum, NASA GSFC, Greenbelt, USA.

August 2015


Ganeshan M., and D. L. Wu (2014). An investigation of the Arctic Inversion using COSMIC RO Observations. Poster presentation, The AGU Fall Meeting, San Francisco, USA.

17, 2014


Ganeshan M., and D. L. Wu (2014). Application and limitations of RO data for the detection of Arctic boundary layer properties. Oral presentation, The 8th FORMOSAT-3/COSMIC Data Users’ Workshop, Boulder, USA.

November 2, 2014


Ganeshan M., R. Murtugudde, and J. Strack (2013). The role of negative buoyancy in surface-based convection and its representation in cumulus parameterization schemes. Oral presentation, The 93rd AMS Annual Meeting, Austin, USA.

February 2013


Ganeshan M., and R. Murtugudde (2012). Convective processes over the urban and non-urban regions of the US. Oral presentation, Joint Annual UMD Burgers Program/JHU Center for Environmental and Applied Fluid Mechanics Symposium, College Park, USA.

June 2012


Ganeshan M., and R. Murtugudde (2011). Impact of model resolution on the prediction of warm season rainfall over the Chesapeake Bay watershed. Oral presentation, The 3rd Annual Graduate Women in Science Young Investigators’ Symposium, Laurel, USA.

June 2011


Ganeshan M., and R. Murtugudde (2011). Impact of model resolution on warm season rainfall: parameterized vs. explicit convection. Oral presentation, The DC-AMS Meeting, College Park, USA.

February 2011