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. Dr. Farrell received her Ph.D. in Space and Climate Physics from University College London in 2007. Her primary fields of study are cryospheric sciences and remote sensing. She is a principal investigator on the NASA ICESat-2 Science Team and a member of the Mission Advisory Group for the Copernicus Polar Ice and Snow Topography Altimeter. 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 is also a visiting scientist with the NOAA Laboratory for Satellite Altimetry, College Park, MD. She joined the University of Maryland in 2009 as a Postdoctoral Research Associate with the Cooperative Institute for Climate and Satellites (CICS).

Degrees

  • University College London - PhD

  • University College London - MSci

Areas of Interest

  • Remote sensing
  • Polar oceans and sea ice
  • Laser and Radar Altimetry, SAR
  • Climate monitoring
  • Earth System Science

Research Topics

- AOSC440/GEOG440: 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

Peer-Reviewed Publications 

  1. 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. (2023). 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

  2. Meier, W. M., Petty, A., Hendricks, S., Perovich, D., Farrell, S., Webster, M., Divine, D, Gerland, S., Kaleschke, L., Ricker, R., Tian-Kunze, X. (2023). 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.
  3. 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
  4. 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  
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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 
  14. 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
  15. 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
  16. 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
  17. 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 
  18. 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
  19. 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
  20. 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.
  21. 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
  22. 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  
  23. 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.
  24. 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   
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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    
  30. 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
  31. 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
  32. 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   
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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
  38. 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
  39. 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    
  40. 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   
  41. 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).
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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
  47. 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
  48. 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
  49. 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
  50. 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
  51. 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
  52. 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
  53. 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  
  54. 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
  55. 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
  56. 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
  57. 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
  58. 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
  59. 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
  60. 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
  61. 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
  62. 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
  63. 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
  64. 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.
  65. 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
  66. 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
  67. 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
Associate Professor

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