Cryocity 
Cryospheric Processes Laboratory
The City College of New York
  • Research
    • AMSR-E SWE prototype algorithm
    • Ice dynamics and supra glacial lakes
    • MAR model
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      • Material for Perspective of Climate Change Class
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  • MEdia
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Research statement and activities

Broadly speaking, I am a geoscientist investigating snow and ice in Earth’s climate system using in-situ observations, remote sensing data (both spaceborne and airborne) and computer models. More specifically, my research focuses on

-       the dynamics of seasonal snowpack

-       ice sheet surface properties and ice dynamics

-       linkages between surface processes and climate drivers in the polar regions

My research includes dual emphases on science questions and societal impacts. I have had the opportunity of getting involved in cutting-edge research concerning ice sheets surface processes, their dynamics and their interaction with climate. I have also developed and implemented techniques for estimates of seasonal snow parameters, such as snow depth, snow water equivalent (SWE) and melt onset/refreeze timing to support the advancement of scientific understanding of snow processes. The societal impact of my research is in its application to water resources management, weather forecast and to the projection of the two Earth’s ice sheets in future climate scenarios. This is confirmed by the large media coverage received over the years.

Dynamics of seasonal snowpack

During my years at the NASA Goddard Space Flight Center (NASA GSFC) I became (and I still am) the PI of the NASA operational SWE product from the Advanced Microwave Scanning Radiometer for EOS (AMSR-E) algorithm. This is the only NASA operational product generating daily, pentad and monthly estimates of snow depth and SWE at global scales. The data set is openly distributed and it is broadly used for snow climatology studies, for weather forecast and for the assessment of global circulation models. Though the AMSR-E recently failed, I am in negotiation with the Japanese Space Agency (JAXA) to generate a product similar to the one from AMSR-E using the AMSR2 sensor.

I have been among the first to combine both active and passive microwave data to study snow processes at global scale. I have also worked on combining and using optical data with microwave observations to generate a suite of data that would aim at maximizing the extraction of useful information from a multi-sensor approach. I have been continuously collaborating with my colleagues to expand and improve existing approaches while developing novel techniques based on the combination of physical electromagnetic models and artificial intelligence (artificial neural networks and genetic algorithms).

I complemented spaceborne and airborne remote sensing data with fieldwork activities, instruments development and with the use of models outputs in conjunction with assimilation techniques. I have led and participated to several fieldwork campaigns in the continental US (Idaho, Colorado, Alaska) to collect ground information for the validation of remote sensing approaches and the refinement of snow physical models

Ice sheet surface properties and ice dynamics

I have been studying ice sheet surface properties and, more recently, ice dynamics through a combination of remote sensing data, models outputs and fieldwork activities. I have been focusing on studying the components of the surface energy balance (e.g., albedo, temperature) and their impact on the mass balance of the Greenland and Antarctica ice sheets. In this context, results concerning the 2010 melting record in Greenland and its causes were published on Environmental Research Letters (ERL) and were downloaded more then 500 times within the first months from the publication date. The paper was also nominated as 2011 best paper by the ERL editorial board.

I have collected in-situ data for the validation of the outputs of a regional climate model and remote sensing observations and for improving our understanding of the links between surface processes and ice dynamics. I have led three field campaigns to Greenland between 2009 and 2011 (one of which was highlighted in the June 2010 issue of the National Geographic magazine) during which we gathered data on supraglacial lakes by means of sensors mounted on a remotely controlled boat and a helicopter. In the summer of 2011, my team and I were able to collect ice sheet velocity data from differential GPS measurements to study the effect of the drainage of supraglacial lakes on the velocity of the Greenland ice sheet. In this case, we were the first to measure the acceleration of the ice following a rapid lake drainage at multiple locations, which is allowing us to formulate new glaciological hypotheses.

I also studied the relationship between ice sheet surface processes (e.g., albedo) and the biological activity in cryoconite (e.g., a wind-deposited dark mixture of dust, soot and other materials present on the ice sheet) holes and streams. My team and I collected data from locations in both Greenland and Antarctica, where I had the opportunity of working with a team of biologists in December of 2010. We characterized the mineralogical composition of cyoconite collected at the two poles to address their impact on surface energy balance (melting) and addressed the impact of the hydrological cycle on the evolution of cryoconite in places that were visited by us for the first time (Dry Valleys).

Linkages between surface processes and climate drivers in the polar regions

My colleagues and I have been addressing melting trends over the Arctic and Antarctic regions over the past decades and their links to climate drivers such as the El-Nino Southern Oscillation (ENSO), the Southern Annular Mode (SAM) and the North Atlantic Oscillation (NAO). Despite the importance of this topic, researchers focusing on this topic are still a few. This research field is still in its infancy and it holds a great potential in terms of research findings and funding opportunities. The most recently project that I got funded from the NSF Antarctic Program is specifically focusing on studying the links between ENSO and melting patterns over the Antarctic Peninsula.

Research Recognition and Service to the Scientific Community

I am recognized by the national and international communities as a leader in snow dynamics, ice sheet studies and remote sensing of the cryosphere. I am currently editing a book entitled “Remote Sensing of the Cryosphere” (under contract with Wiley and Sons, Ltd.). I currently serve as Executive Committee member of the American Geophysical Union Cryosphere Focus Group and I was Vice-President of the European Geophysical Union Cryosphere Division for two mandates. I have been consistently chairing and organizing multiple sessions at major conferences concerning remote sensing of snow and ice and snow/ice processes. I have been a contributing author to the NOAA Arctic Report Card over the past years and I was the coordinator of the Terrestrial Hydrology and Cryosphere section for the same report in 2011.

Funding Profile and Future Directions

My record of extramural funding has been consistently strong over the past years, with the majority of my funding through NASA and NSF. Smaller funding sources include university-based programs, and private institutions (e.g., WWF). Together, these have provided a stable base for my research and continuing support for my students. Over the past ten years I have received funding for a total of more than $ 3M, half of which since I moved to CCNY in February of 2008. I am currently PI or Co-I on over $1.2M in grant monies. As a continuing PI of the NASA’s SWE product, financial support for my snow and ice will continue for at least another 2 years. My newest NSF project will begin in February of 2012 and will continue for 3 years. I also have major proposals submitted to NSF and NASA and I will continue to diversify the mix of programs and agencies and envision potential applications to NOAA and DOE.

I plan to continue to perform cutting edge research in my areas of expertise and to expand in other directions. I will continue studying the linkages between climate drivers and surface processes at the poles and will carry out fieldwork activities to support hydrology and glaciology research. I plan to continue intersecting with the biological realm to address the impact of cryoconite on ice sheet processes.

I have begun to investigate the links between the recently observed sea ice changes in the Arctic region and surface/atmospheric processes over Greenland through coupled physical atmospheric and surface models. Future plans also include combining models, surface automated observations and remote sensing data for improving snow parameter estimates and the use of data mining techniques to develop data driven models which will help to identify patterns in data sets that are not discoverable through physical models.

Research grants and contracts

Funded

1. Blending of Existing Snow-Cover Products to produce a Snow Extent / Snow Depth Product, USAF Unsolicited, Co-PIs: J. Foster & D. Hall , Co-Is: B. Choudhury, E. Kim, S. Nghiem, G. Riggs and M.Tedesco, Collaborator: R.E.J. Kelly, June 2006 – May 2007, Total budget : $ 450,000. Role PI.

2. *Global multi-sensor active and passive microwave retrieval of snow parameters, Submitted to NASA NRA NNH05ZDA001N-THP, PI: M. Tedesco (UMBC). Co-I: Glenn Liston  (Colorado State University), Edward J Kim (GSFC), Collaborators: Richard Kelly (University of Toronto, CA), Total budget: $ 467,102. Role PI.

3. *Towards improved weather and sub-seasonal climate forecasts through assimilation of NASA EOS land surface products into the NASA GMAO seasonal forecasting and weather prediction systems, NASA Research Opportunities in Space and Earth Sciences (NN-H-06-Z-DA-001-N, “ROSES 2006”):  Earth System Science Research using Data and Products from the Terra, Aqua, and ACRIMSAT Satellites, PI: Rolf Reichle, Co-I’s: M. Tedesco, Michael Bosilovich, Randal Koster, April 1, 2007 – March 31, 2010, Total budget $ 595k Role Collaborator.

4. **Maintenance and refinement of the AMSR-E SWE algorithm, NASA Research Opportunities in Space and Earth Sciences (NN-H-06-Z-DA-001-N, “ROSES 2006”):  Earth System Science Research using Data and Products from the Terra, Aqua, and ACRIMSAT Satellites, PI: M. Tedesco, Co-I’s:Ed Kim, James Foster, James R. Wang, Contractors: Jeff Miller, International collaborators: Richard Kelly (U. of Waterloo, Canada), Anne Walker and Chris Derksen (Canada), Prof. Martti Hallikainen (Helsinki University of technology), April 1, 2007 – March 31, 2010, Total budget $ 585k. Role PI.

5. Evaluation of Antarctic and Tropical Forest sites for Calibration and Cross-Calibration of Spaceborne L-band Radiometers. Submitted to ESA. Accepted. PI: Edward J Kim, CO-I’s: Dr. Jeffrey Walker; The University of Melbourne, Dr. M. Tedesco, Goddard Earth Science and Technology Center, Dr. David LeVine; Dr. Bob Bindschadler; NASA/GSFC.  FTE :no funded provided because International cooperation, 2005. Role Collaborator.

6. Improved passive microwave snow retrievals of snow depth and snow water equivalent over land and sea ice through the incorporation of electromagnetic modeling and temporal information. NASA unsolicited, PI: M. Tedesco, Total budget: $ 47,290, 2006 – 2007. Role PI.

7. Improving surface mass balance estimation of the Greenland ice sheet through assimilation of multi-sensor satellite products and ground measurements into a regional climate model , NSF, M. Tedesco (PI, CUNY) and S. Margulis (UCLA), $ 580,130 , 36 months, 09/01/09 – 08/31/12. Role PI.

8. Unsolicited proposal to World Wildlife Foundation, Surveying supraglacial lakes in West Greenland: understanding and documenting climate change, PI M. Tedesco, $ 19,000, May 1st 2009, 1 year. Role PI.

9. Unsolicited proposal to Hydrological Sciences Branch NASA Goddard Space Flight Center, Point of Contact: Dr. James L. Foster, Estimation of melt onset and refreezing dates from passive microwave observations by means of a dynamic diurnal amplitude variations-based algorithm: development, implementation, long-term trends and large scale analysis. PI M. Tedesco, May 1st 2009, 1 Year, $ 47,000. Role PI.

10. Unsolicited proposal to World Wildlife Foundaition, Understanding Greenland surface melting and cryoconite by means of a UAV helicopter , PI M. Tedesco, $ 19,000, April 1st 2010, 1 year. Role PI.

11. NASA Research Announcement ‘The Science of Terra and Aqua’ (Solicitation NNH09ZDA001N-TERRAQUA, Enhancing NASA data products through multi-variate assimilation of land surface observations from Aqua and Terra, PI R. Reichle (NASA), M. Tedesco Role Collaborator.

12. NASA Cryosphere Program. Financial support for fieldwork activities in Greenland, 2010 – 2011. Estimated budget ~ $ 90,000 (note: the money goes to the company providing the logistical support for travel to Greenland). Role PI.

13. NASA Research Announcement ‘The Science of Terra and Aqua’ (Solicitation NNH09ZDA001N-TERRAQUA, Maintenance and moderate refinement of the NASA AMSR-E SWE operational product, M. Tedesco (PI), L. Tsang (co-I), A. Frei (co-I), R. Kelly, C. Derksen, J. Pulliainen, J. Eylander (Collaborators), Preliminary budget $450,000, 01/01/2011 – 12/31/2014. Role PI.

14. Enhanced spatial resolution surface melting over the Antarctic Peninsula (1958 - to date) from a regional climate model validated through remote sensing observations, PI: Tedesco, NSF Antarctic Program, 01/01/12, 3 years, Total budget: 257,101. Role PI.

15. Communicating climate change at the poles through data visualization and polar sounds, CCNY Seeds Grant, PI Tedesco (EAS), co-PI’s : I. Saltz, E. Ham (Art Dept.), J. Perl (Music Dept.), $ 49,820. Role PI.

16. Interdisciplinary climate change seminar cycle, CCNY internal funding, PI Tedesco, $ 5000. Role PI.

Pending

Collaborative Research:  Quantifying scale processes over the Greenland ice sheet for improving surface, PI Tedesco, NSF Arctic Program, 03/01/12, CCNY portion: $ 250,164

Collaborative Research:  Assessing the Impact of Arctic Sea Ice Decline and Variability on the Greenland Ice Sheet Mass Balance, PI Tedesco, NSF Arctic Program, 03/01/12, CCNY portion: $ 196,809

Darkening of the Greenland ice sheet: comparing satellite and in-situ observations, Submitted by Dr. Willem Jan van de Berg to the Netherlands Organisations for Scientific Research, December 2011, Duration: 4 years. No funding allocated because of international collaboration but Tedesco will be part of the expedition team to Greenland, in case funding is allocated.


* These proposals have been joint in a single grant to CUNY for the period February 2008 – January 2011


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