Farrell, Sinead L.

Bio

Sinéad Louise Farrell joined the Department of Geographical Sciences as an Associate Professor in the fall of 2019. Dr. Farrell has a joint appointment with the Department of Atmospheric and Oceanic Science. She is also affiliated with the University of Maryland's Cooperative Institute for Satellite Earth System Studies (CISESS) and is a visiting scientist with the NOAA Laboratory for Satellite Altimetry, College Park, MD. Her primary fields of study are cryospheric sciences and remote sensing. She served as a principal investigator on the NASA ICESat-2 Science Team from 2012-2024, the NASA Operation IceBridge Science Team from 2009-2016, and she is currently a member of the Mission Advisory Group for the European Space Agency's Copernicus Polar Ice and Snow Topography Altimeter (CRISTAL). Prior to joining the Department of Geographical Sciences, Dr. Farrell was an Associate Research Scientist at the Earth System Science Interdisciplinary Center (ESSIC), at the University of Maryland. She joined the University of Maryland in 2009 as a Postdoctoral Research Associate with the Cooperative Institute for Climate and Satellites (CICS). Dr. Farrell received her Ph.D. in Space and Climate Physics from University College London, UK, in 2007.

Degrees

  • University College London - PhD

  • University College London - MSci

Areas of Interest

  • Remote sensing
  • Sea Ice
  • Polar Oceanography
  • Laser Altimetry, Radar Altimetry, SAR
  • Climate
  • Earth System Science

Research Topics

- AOSC440/GEOG440/AOSC642: Polar Remote Sensing 

https://app.testudo.umd.edu/soc/202108/AOSC/AOSC440/0.pdf

 The harsh environment of the vast polar regions makes them some of the most inaccessible places on Earth. With widespread environmental change already underway, satellite remote sensing provides the only means by which to obtain year-round observations of the polar climate system. The objective of this course is to provide students with an overview of polar remote sensing techniques, including the physical principles of active and passive sensors, orbits, electromagnetic radiation, atmospheric transmission, calibration and validation. We will focus on measurements of the polar oceans, sea ice, glaciers, ice sheets, snow and permafrost, and examine the response of the cryosphere to climate change. - GEOG301: Advanced Geographical Environmental Systems https://app.testudo.umd.edu/soc/202101/GEOG/GEOG301/0.pdf GEOG301 is organized around eight major topics: (1) Global Energy Balance and the Greenhouse Effect (2) Atmospheric Circulation (3) Oceanic circulation (4) The Geosphere (5) The Biosphere (6) The Cryosphere (7) Climate Change: past, present and future (8) Monitoring and Modeling Earth Systems

- GEOG301 - Advanced Geographical Environmental Systems 

https://app.testudo.umd.edu/soc/202301/GEOG/GEOG301/0.pdf

This course will provide the students with an overview of the key elements of physical geography, including biogeography (factors and processes that control the geographical distributions of plants and animals, climatology (processes associated with controlling variations in weather and climate), and geomorphology (factors and processes that control changes to the physical structure of the earth surface in relation to geological structures).

 

Peer-Reviewed Publications 

  1. Fischer, R., Farrell, S. L., Kuhn, J. M., and Duncan, K. (2024). Understanding Decadal-scale Trends in Altimeter-derived Significant Wave Height in the Bering Sea, J. Climate, https://doi.org/10.1175/JCLI-D-23-0485.1 
  2. Meier, W. N., A. Petty, S. Hendricks, D. Perovich, S. Farrell, M. Webster, D. Divine, S. Gerland, L. Kaleschke, R. Ricker, and X. Tian-Kunze (2024). Sea Ice [in “State of the Climate
    in 2023”]. Bull. Amer. Meteor. Soc., 105 (8), S301–S303, https://doi.org/10.1175/BAMS-D-24-0101.1. 
  3. Macdonald, G. J., Scharien, R. K., Duncan, K., Farrell, S. L., Rezania, P., & Tavri, A. (2024). Arctic sea ice topography information from RADARSAT Constellation Mission (RCM) synthetic aperture radar (SAR) backscatter. Geophysical Research Letters, 51, e2023GL107261. https://doi.org/10.1029/2023GL107261 
  4. Magruder, L., Farrell, S. L., Neuenschwander, A., Duncanson, L., Csatho, B., Kacimi, S., and Fricker, H. (2024). Monitoring Earth's climate variables with satellite laser altimetry, Nature Reviews Earth & Environment, 5, 120–136. https://doi.org/10.1038/s43017-023-00508-8 
  5. Meier, W. M., Petty, A., Hendricks, S., Kaleschke, L., Divine, D., Farrell, S., Gerland, S., Perovich, D., Ricker, R., Tian-Kunze, X. and Webster, M. (2023b). Sea Ice, Arctic Report Card 2023, Druckenmiller, M. L., R. L. Thoman and T. A. Moon Eds., NOAA Technical Report OAR ARC, https://doi.org/10.25923/f5t4-b865
  6. Meier, W. M., Petty, A., Hendricks, S., Perovich, D., Farrell, S., Webster, M., Divine, D, Gerland, S., Kaleschke, L., Ricker, R., Tian-Kunze, X. (2023a). Sea Ice [in “State of the Climate in 2022”]. Bull. Amer. Meteor. Soc., 104 (9), S281–S284, https://doi.org/10.1175/10.1175/BAMS-D-23-0079.1.
  7. Buckley, E. M., Farrell, S. L., Herzfeld, U. C., Webster, M. A., Trantow, T., Baney, O. N., Duncan, K. A., Han, H., and Lawson, M. (2023). Observing the evolution of summer melt on multiyear sea ice with ICESat-2 and Sentinel-2, The Cryosphere, 17, 3695–3719. https://doi.org/10.5194/tc-17-3695-2023
  8. Herzfeld, U., Trantow, T., Han, H., Buckley, E., Farrell, S., and Lawson, M. (2023). Automated detection and depth determination of melt ponds on sea ice from ICESat-2 ATLAS data, IEEE Trans. Geosci. Rem. Sens., 61, 1-22. https://doi.org/10.1109/TGRS.2023.3268073  
  9. Sandven, S., G. Spreen, G. Heygster, F. Girard-Ardhuin, S. L. Farrell, W. Dierking, and R. A. Allard (2023), Sea Ice Remote Sensing – Recent Developments in Methods and Climate Data Sets, Surveys in Geophysics, https://doi.org/10.1007/s10712-023-09781-0
  10. Ricker, R., Fons, S., Jutila, A., Hutter, N., Duncan, K., Farrell, S. L., Kurtz, N. T.,  and Fredensborg Hansen, R. M. (2023). Linking scales of sea ice surface topography: evaluation of ICESat-2 measurements with coincident helicopter laser scanning during MOSAiC, The Cryosphere, 17, 1411–1429, https://doi.org/10.5194/tc-17-1411-2023
  11. Meier, W. M., Petty, A., Hendricks, S., Perovich, D., Farrell, S., Webster, M., Divine, D, Gerland, S., Kaleschke, L., Ricker, R., Tian-Kunze, X. (2022). Sea Ice, Arctic Report Card 2022, Druckenmiller, M. L., R. L. Thoman and T. A. Moon Eds., NOAA Technical Report OAR ARC, https://doi.org/10.25923/xyp2-vz45
  12. Duncan, K., & Farrell, S. L. (2022). Determining variability in Arctic sea ice pressure ridge topography with ICESat-2. Geophysical Research Letters, 49, e2022GL100272. https://doi.org/10.1029/2022GL100272
  13. Meier, W. M., D. Perovich, S. Farrell, C. Haas, S. Hendricks, A. Petty, M. Webster, D. Divine, S. Gerland, L. Kaleschke, R. Ricker, A. Steer, X. Tian-Kunze, M. Tschudi, and K. Wood, (2022). Sea Ice, [in “State of the Climate in 2021”], Bull. Amer. Meteor. Soc., 103(8), S270 – S273, https://doi.org/10.1175/BAMS-D-22-0082.1
  14. Meier, W. M., D. Perovich, S. Farrell, C. Haas, S. Hendricks, A. Petty, M. Webster, D. Divine, S. Gerland, L. Kaleschke, R. Ricker, A. Steer, X. Tian-Kunze, M. Tschudi, and K. Wood, (2021). Sea Ice, Arctic Report Card 2021, T. A. Moon, M. L. Druckenmiller, & R. L. Thoman, Eds., NOAA Technical Report OAR ARC 21-05, https://doi.org/10.25923/y2wd-fn85
  15. Meier, W., D. Perovich, S. Farrell, C. Haas, S. Hendricks, L. Kaleschke, A. Petty, M. Tschudi, M. Webster, D. Divine, S. Gerland, O. Pavlova, R. Ricker, X. Tian-Kunze, and K. Wood, (2021). Sea Ice [in “State of the Climate in 2020”], Bull. Amer. Meteor. Soc., 102(8), S279–S282, https://doi.org/10.1175/BAMS-D-21-0086.1
  16. Rösel, A., Farrell, S. L., Nandan, V., Richter-Menge, J., Spreen, G., Divine, D. V., Gallet, J.-C., and Gerland, S. (2021). Implications of surface flooding on airborne thickness measurements of snow on sea ice, The Cryosphere, 15, 2819–2833, https://doi.org/10.5194/tc-15-2819-2021
  17. International Altimetry Team (2021). Altimetry for the future: Building on 25 years of progress. Advances in Space Research, 68(2), 319-363, https://doi.org/10.1016/j.asr.2021.01.022 
  18. Fredensborg Hansen, R. M., Rinne, E., Farrell, S. L., and Skourup, H. (2021). Estimation of degree of sea ice ridging in the Bay of Bothnia based on geolocated photon heights from ICESat-2. The Cryosphere, 15(6), 2511–2529, https://doi.org/10.5194/tc-15-2511-2021
  19. MacGregor, J. A., et al. (2021). The scientific legacy of NASA's Operation IceBridge. Reviews of Geophysics, 59, e2020RG000712.  http://dx.doi.org/10.1029/2020RG000712
  20. Perovich, D., W. Meier, M. Tschudi, S. Hendricks, A. A. Petty, D. Divine, S. Farrell, S. Gerland, C. Haas, L. Kaleschke, O. Pavlova, R. Ricker, X. Tian-Kunze, M. Webster, and K. Wood (2020). Sea Ice. Arctic Report Card 2020, R. L. Thoman, J. Richter-Menge, and M. L. Druckenmiller, Eds., https://arctic.noaa.gov/Report-Card/Report-Card-2020  https://doi.org/10.25923/vtdn-2198
  21. Farrell, S. L., Duncan, K., Buckley, E. M., Richter‐Menge, J., & Li, R. (2020). Mapping Sea Ice Surface Topography in High Fidelity with ICESat‐2. Geophysical Research Letters, 47, e2020GL090708. https://doi.org/10.1029/2020GL090708 
  22. Andersen, J. K., Andreassen, L. M., Baker, E. H., Ballinger, T. J., Berner, L. T., Bernhard, G. H., Bhatt, U. S., Bjerke, J. W., Box, J. E., Britt, L., Brown, R., Burgess, D., Cappelen, J., Christiansen, H. H., Decharme, B., Derksen, C., Drozdov, D. S., Epstein, H. E., Farquharson, L. M., Farrell, S. L., Fausto, R. S., Fettweis, X., Fioletov, V. E., Forbes, B. C., Frost, G. V., Gerland, S., Goetz, S. J., Grooß, J., Hanna, E., Hanssen-Bauer, I., Hendricks, S., Ialongo, I., Isaksen, K., Johnsen, B., Kaleschke, L., Kholodov, A. L., Kim, S., Kohler, J., Labe, Z., Ladd, C., Lakkala, K., Lara, M. J., Loomis, B., Luks, B., Luojus, K., Macander, M. J., Malkova, G. V., Mankoff, K. D., Manney, G. L., Marsh, J. M., Meier, W., Moon, T. A., Mote, T., Mudryk, L., Mueter, F. J., Müller, R., Nyland, K. E., O’Neel, S., Overland, J. E., Perovich, D., Phoenix, G. K., Raynolds, M. K., Reijmer, C. H., Ricker, R., Romanovsky, V. E., Schuur, E. A. G., Sharp, M., Shiklomanov, N. I., Smeets, C. J. P. P., Smith, S. L., Streletskiy, D. A., Tedesco, M., Thoman, R. L., Thorson, J. T., Tian-Kunze, X., Timmermans, M., Tømmervik, H., Tschudi, M., van As, D., van de Wal, R. S. W., Walker, D. A., Walsh, J. E., Wang, M., Webster, M., Winton, Ø., Wolken, G. J., Wood, K., Wouters, B., & Zador, S. (2020). The Arctic, Bulletin of the American Meteorological Society, 101(8), S239-S286. https://doi.org/10.1175/BAMS-D-20-0086.1
  23. Duncan, K., S. L. Farrell, J. Hutchings, J. Richter-Menge (2020). Late Winter Observations of Sea Ice Pressure Ridge Sail Height. IEEE Geoscience and Remote Sensing Letters, https://doi.org/10.1109/LGRS.2020.3004724
  24. Kern, M., R. Cullen, B. Berruti, J. Bouffard, T. Casal, M. R. Drinkwater, A. Gabriele, A. Lecuyot, M. Ludwig, R. Midthassel, I. Navas Traver, T. Parrinello, G. Ressler, E. Andersson, C. Martin Puig, O. Andersen, A. Bartsch, S. L. Farrell, S. Fleury, S. Gascoin, A. Guillot, A. Humbert, E. Rinne, A. Shepherd, M. R. van den Broeke, J. Yackel, (2020), The Copernicus Polar Ice and Snow Topography Altimeter (CRISTAL) high-priority candidate mission, The Cryosphere, 14, 2235–2251, https://doi.org/10.5194/tc-14-2235-2020.
  25. Buckley, E. M., Farrell, S. L., Duncan, K., Connor, L. N., Kuhn, J. M., & Dominguez, R. T. (2020). Classification of sea ice summer melt features in high‐resolution IceBridge imagery. J. Geophys. Res., 125, e2019JC015738. https://doi.org/10.1029/2019JC015738
  26. Perovich, D., W. Meier, M. Tschudi, S. Farrell, S. Hendricks, S. Gerland, L. Kaleschke, R. Ricker, X. Tian-Kunze, M. Webster and K. Wood (2019b), Sea ice, Arctic Report Card 2019, peer-reviewed, https://arctic.noaa.gov/Report-Card/Report-Card-2019  
  27. Magruder, L., T. Neumann, H. Fricker, S. L. Farrell, K. Brunt, A. Gardner, D. Hancock, K. Harbeck, M. Jasinski, R. Kwok, N. Kurtz, J. Lee, T. Markus, J. Morison, A. Neuenschwander, S. Palm, S. Popescu, B. Smith and Y. Yang (2019), New Earth orbiter provides a sharper look at a changing planet, EOS, 100, https://doi.org/10.1029/2019EO133233.
  28. Perovich, D., W. Meier, M. Tschudi, S. Farrell, S. Hendricks, S. Gerland, C. Haas, T. Krumpen, C. Polashenski, R. Ricker and M. Webster (2019a), Sea ice cover [in “State of the Climate in 2018”], Bull. Amer. Meteor. Soc., 100(9), S146–150, https://doi.org/10.1175/2019BAMSStateoftheClimate.1   
  29. Kwok, R., Markus, T., Kurtz, N. T., Petty, A. A., Neumann, T. A., Farrell, S. L., Cunningham, G. F., Hancock, D. W., Ivanoff, A., Wimert, J. (2019), Surface height and sea ice freeboard of the Arctic Ocean from ICESat‐2: Characteristics and early results, J. Geophys. Res., 124. https://doi.org/10.1029/2019JC015486
  30. Sallila, H., S.L. Farrell, J. McCurry, and E. Rinne (2019). Assessment of Contemporary Satellite Sea Ice Thickness Products for Arctic Sea Ice. The Cryosphere, 13, 1187-1213, 2019
    https://doi.org/10.5194/tc-13-1187-2019
  31. Perovich, D. K., W. Meier, M. Tschudi, S. Farrell, S. Hendricks, S. Gerland, C. Haas, T. Krumpen, C. Polashenski, R. Ricker, M. Webster (2018b), Sea ice, Arctic Report Card 2018, peer-reviewed, https://arctic.noaa.gov/Report-Card/Report-Card-2018
  32. Rostosky, P., Spreen, G., Farrell, S. L., Frost, T., Heygster, G., & Melsheimer, C. (2018). Snow depth retrieval on Arctic sea ice from passive microwave radiometers - Improvements and extensions to multiyear ice using lower frequencies. J. Geophys. Res., 123, 7120–7138. https://doi.org/10.1029/2018JC014028
  33. Perovich, D. K., W. Meier, M. Tschudi, S. Farrell, S. Hendricks, S. Gerland, C. Haas, T. Krumpen, C. Polashenski, R. Ricker and M. Webster (2018a), Sea ice cover [in “State of the Climate in 2017”], Bull. Amer. Meteor. Soc., 99(8), S147–152, https://doi.org/10.1175/2018BAMSStateoftheClimate.1    
  34. Shepherd, A., H. A. Fricker, S. L. Farrell (2018), Trends and Connections Across the Antarctic Cryosphere, Nature, 558, 223-232, https://doi.org/10.1038/s41586-018-0171-6
  35. Blanchard-Wrigglesworth, E., M. A. Webster, S. L. Farrell and C. M. Bitz (2018), Reconstruction of Snow on Arctic Sea Ice, J. Geophys. Res., https://doi.org/10.1002/2017JC013364
  36. Allard, R. A., S. L. Farrell, D. A. Hebert, W. F. Johnston, L. Li, N. T. Kurtz, M. W. Phelps, P. G. Posey, R. Tilling, A. Ridout, A. J. Wallcraft (2018), Utilizing CryoSat-2 Ice Thickness to Initialize a Coupled Ice-Ocean Modeling System, Advances in Space Res., https://doi.org/10.1016/j.asr.2017.12.030   
  37. Duncan, K., S. L. Farrell, L. N. Connor, J. Richter-Menge and R. Dominguez (2018), High-Resolution Airborne Observations of Sea Ice Pressure-Ridge Sail Height, Annals of Glaciology, https://doi.org/10.1017/aog.2018.2
  38. Perovich, D. K., W. Meier, M. Tschudi, S. Farrell, S. Hendricks, S. Gerland, C. Haas, T. Krumpen, C. Polashenski, R. Ricker, M. Webster (2017), Sea ice, Arctic Report Card 2017, peer-reviewed, http://www.arctic.noaa.gov/Report-Card/Report-Card-2017/ArtMID/7798/ArticleID/699/Sea-Ice
  39. Skourup, H., S. L. Farrell, S. Hendricks, R. Ricker, T. W. K. Armitage, A. Ridout, O. B. Andersen, C. Haas and S. Baker (2017), An Assessment of State-of-the-Art Mean Sea Surface and Geoid Models of the Arctic Ocean: Implications for Sea Ice Freeboard Retrieval, J. Geophys. Res.: Oceans, 122, https://doi.org/10.1002/2017JC013176
  40. Kwok, R., N. T. Kurtz, L. Brucker, A. Ivanoff, T. Newman, S. L. Farrell, J. King, S. Howell, M. A. Webster, J. Paden, C. Leuschen, J. A. MacGregor, J. Richter-Menge, J. Harbeck and M. Tschudi (2017), Intercomparison of snow depth retrievals over Arctic sea ice from radar data acquired by Operation IceBridge, The Cryosphere, 11, 2571-2593, https://doi.org/10.5194/tc-11-2571-2017
  41. Cole, S. T., J. M. Toole, R. Lele, M.-L. Timmermans, S. G. Gallaher, T. P. Stanton, W. J. Shaw, B. Hwang, T. Maksym, J. P. Wilkinson, M. Ortiz, H. Graber, L. Rainville, A. A. Petty, S. L. Farrell, J. A. Richter-Menge and C. Haas (2017), Ice and ocean velocity in the Arctic marginal ice zone: Ice roughness and momentum transfer, Elementa Sci. Anth., 5(55), http://doi.org/10.1525/elementa.241
  42. Perovich, D., W. Meier, M. Tschudi, S. Farrell, S. Gerland, S. Hendricks, T. Krumpen and C. Haas (2017), Sea ice cover [in “State of the Climate in 2016”], Bull. Amer. Meteor. Soc., 98(8), S131–S133
  43. Yan, J.-B., S. Gogineni, F. Rodriguez-Morales, D. Gomez-Garcia, J. Paden, J. Li, C. Leuschen, D. Braaten, J. Richter-Menge, S. Farrell, J. Brozena and R. Hale (2017), Airborne Measurements of Snow Thickness: Using ultrawide-band frequency-modulated-continuous-wave radars, IEEE Geosci. Rem. Sens. Mag., 5(2), pp. 57-76, https://doi.org/10.1109/MGRS.2017.2663325    
  44. Markus, T., T. Neumann, A. Martino, W. Abdalati, K. Brunt, B. Csatho, S. Farrell, H. Fricker, A. Gardner, D. Harding, M. Jasinski, R. Kwok, L. Magruder, D. Lubin, S. Luthcke, J. Morison, R. Nelson, A. Neuenschwander, S. Palm, S. Popescu, CK Shum, B. E. Schutz, B. Smith, Y. Yang and J. Zwally (2017), The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2): Science requirements, concept, and implementation, Rem. Sens. Environ., 190, 260-273, https://doi.org/10.1016/j.rse.2016.12.029   
  45. Perovich, D. K., W. Meier, M. Tschudi, S. Farrell, S. Gerland, S. Hendricks, T. Krumpen and C. Haas (2016), Sea ice, Arctic Report Card 2016, peer-reviewed (http://arctic.noaa.gov/Report-Card/Report-Card-2016/ArtMID/5022/ArticleID/286/Sea-Ice).
  46. Perovich, D., W. Meier, M. Tschudi, S. Farrell, S. Gerland and S. Hendricks (2016), Sea ice cover [in “State of the Climate in 2015”], Bull. Amer. Meteor. Soc., 97(8), S134–S135
  47. Petty, A., M. Tsamados, N. Kurtz, S. Farrell, T. Newman, J. Harbeck, D. Feltham and J. Richter-Menge (2016), Characterizing Arctic sea ice topography using high-resolution IceBridge data, The Cryosphere, 10(3), 1161
  48. Perovich, D. K., W. Meier, M. Tschudi, S. Farrell, S. Gerland and S. Hendricks (2015), Sea ice, Arctic Report Card 2015, peer-reviewed, http://arctic.noaa.gov/Report-Card/Report-Card-2015/ArtMID/5037/ArticleID/217/Sea-Ice
  49. Blanchard-Wrigglesworth, E., S. L. Farrell, T. Newman and C. M. Bitz (2015), Snow cover on Arctic sea ice in observations and an Earth System Model, Geophys. Res. Lett., https://doi.org/10.1002/2015GL066049
  50. Farrell, S. L., K. M. Brunt, J. M. Ruth, J. M. Kuhn, L. N. Connor and K. M. Walsh (2015), Sea Ice Freeboard Retrieval using Digital Photon-counting Laser Altimetry, Ann. Glaciol., 56(69), 167–174, https://doi.org/10.3189/2015AoG69A686
  51. Newman T., S. L. Farrell, J. Richter-Menge, B. Elder, L. Connor, N. Kurtz and D. McAdoo (2014), Assessment of Radar-derived Snow Depth Measurements over Arctic sea ice, J. Geophys. Res., 119, 8578–8602, https://doi.org/10.1002/2014JC010284
  52. Webster, M. A., I. G. Rigor, S. V. Nghiem, N. T. Kurtz, S. L. Farrell, D. K. Perovich and M. Sturm (2014), Interdecadal Changes in Snow Depth on Arctic Sea Ice, J. Geophys Res., 119, https://doi.org/10.1002/2014JC009985
  53. Tsamados, M., D. Feltham, D. Schroeder, D. Flocco, S. Farrell, N. Kurtz, S. Laxon, and S. Bacon (2014), Impact of atmospheric and oceanic form drag on simulations of Arctic sea ice, J. Phys. Oceanog., 44, 1329-1353, https://doi.org/10.1175/JPO-D-13-0215.1
  54. Richter-Menge, J., and S. L. Farrell (2013), Arctic Sea Ice Conditions in Spring 2009 - 2013 Prior to Melt, Geophys. Res. Lett., 40, 5888-5893, https://doi.org/10.1002/2013GL058011
  55. Kurtz, N., S. L. Farrell, M. Studinger, N. Galin, J. Harbeck, R. Lindsay, V. Onana, B. Panzer, and J. Sonntag (2013), Sea ice thickness, freeboard, and snow depth products from Operation IceBridge airborne data, The Cryosphere,7,1035-1056, https://doi.org/10.5194/tc-7-1035-2013
  56. Connor, L. C., S. L. Farrell, D. C. McAdoo, W. B. Krabill, and S. Manizade (2013), Validating ICESat over thick sea ice in the northern Canada Basin, IEEE Transactions on Geoscience & Remote Sensing, 51(4), 2188-2200, https://doi.org/10.1109/TGRS.2012.2211603
  57. Laxon, S.W., Giles, K. A., Ridout, A. L., Wingham, D. J., Willatt, R., Cullen, R., Kwok, R., Schweiger, A., Zhang, J., Haas, C., Hendricks, S., Krishfield, R., Kurtz, N., Farrell, S. L., Davidson, M. (2013), CryoSat Estimates of Arctic Sea Ice Volume, Geophys. Res. Lett., 40(4), 732-737, https://doi.org/10.1002/grl.50193  
  58. McAdoo, D. C., S. L Farrell, S. W. Laxon, A. L. Ridout, H. J Zwally & D. Yi (2013), Gravity of the Arctic Ocean from satellite data with validations using airborne gravimetry: oceanographic implications,J. Geophys. Res.,118,917–930, https://doi.org/10.1002/jgrc.20080
  59. Kurtz, N., M. Studinger, S. Farrell, J. Paden, J. Richter-Menge, J. Sonntag, and J. Yungel (2013), IceBridge Airborne Survey Data Support Arctic Sea Ice Predictions, EOS Trans. AGU, 94(4), 41, https://doi.org/10.1002/2013EO040001
  60. Onana, V. D. P., N. T. Kurtz, S. Farrell, L. S. Koenig, M. Studinger, and J. P. Harbeck (2013), A Sea Ice Lead Detection Algorithm for use with High Resolution Airborne Visible Imagery, IEEE Trans. Geosci. & Rem. Sens.,51(1),38-56, https://doi.org/10.1109/TGRS.2012.2202666
  61. Farrell, S. L., N. Kurtz, L. N. Connor, B. C. Elder, C. Leuschen, T. Markus, D. C. McAdoo, B. Panzer, J. Richter-Menge, and J. G. Sonntag (2012b), A First Assessment of IceBridge Snow and Ice Thickness Data Over Arctic Sea Ice, IEEE Trans. Geosci. & Rem. Sens., 50(6), 2098 - 2111, https://doi.org/10.1109/TGRS.2011.2170843
  62. Gardner, J., J. Richter-Menge, S. Farrell, and J. M. Brozena (2012), Coincident multiscale estimates of Arctic sea ice thickness, EOS Trans. AGU, 93(6), 57, https://doi.org/10.1029/2012EO060001
  63. Farrell, S. L., D. C. McAdoo, S. W. Laxon, H. J. Zwally, D. Yi, A. Ridout, and K. Giles (2012a), Mean Dynamic Topography of the Arctic Ocean, Geophys. Res. Lett., 39, L01601, https://doi.org/10.1029/2011GL050052
  64. Kurtz, N. T. and S. L. Farrell (2011), Large-scale surveys of snow depth on Arctic sea ice from Operation IceBridge, Geophys. Res. Lett., 38, L20505, https://doi.org/10.1029/2011GL049216
  65. Kurtz, N. T., T. Markus, S. L. Farrell, D. L. Worthen, and L. N. Boisvert (2011), Observations of recent Arctic sea ice volume loss and its impact on ocean-atmosphere energy exchange and ice production, J. Geophys. Res., 116, C04015, https://doi.org/10.1029/2010JC006235
  66. Farrell, S. L., T. Markus, R. Kwok, L. Connor (2011), Laser Altimetry Sampling Strategies over Sea Ice, Annals Glaciol., 52(57), 69-76, https://doi.org/10.3189/172756411795931660
  67. Abdalati, W., H. J. Zwally, R. Bindschadler, B. Csatho, S. L. Farrell, H. A. Fricker, D. Harding, R. Kwok, M. Lefsky, T. Markus, A. Marshak, T. Neumann, S. Palm, B. Schutz, B. Smith, J. Spinhirne, C. Webb (2010), The ICESat-2 Laser Altimetry Mission, Proc. IEEE, 98(5), 735 – 751, https://doi.org/10.1109/JPROC.2009.2034765
  68. Kwok, R., S. Farrell, R. Forsberg, K. Giles, S. Laxon, D. McAdoo, J. Morison, L. Padman, C. Peralta-Ferriz, A. Proshutinsky, and M. Steele (2010), Combining satellite altimetry, time-variable gravity, and bottom pressure observations to understand the Arctic Ocean: A transformative opportunity, in Proc. OceanObs09: Sustained Ocean Observations and Information for Society (Vol. 2), Hall, J., D. E. Harrison and D. Stammer (eds.), Venice, Italy, 21-25 September 2009, ESA Publication WPP-306, peer-reviewed.
  69. Farrell, S. L., S. W. Laxon, D. C. McAdoo, D. Yi, and H. J. Zwally (2009), Five years of Arctic sea ice freeboard measurements from the Ice, Cloud and land elevation Satellite, J. Geophys. Res., 114, C04008, https://doi.org/10.1029/2008JC005074
  70. McAdoo, D. C., S. L. Farrell, S. W. Laxon, H. J. Zwally, D. Yi, and A. L. Ridout (2008), Arctic Ocean Gravity Field Derived from ICESat and ERS-2 Altimetry: Tectonic Implications, J. Geophys. Res., 113, B05408, https://doi.org/10.1029/2007JB005217
  71. Farrell, S. L. (2007), Satellite Laser Altimetry Over Sea Ice, Ph.D. doctoral thesis, 224 pp., Univ. College London, London, U. K., peer-reviewed, http://discovery.ucl.ac.uk/1445477/

 

 

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Sinead L. Farrell
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