Cooperative Institute for Research in Environmental Sciences at the University of Colorado Boulder

Konrad Steffen

Research Interests

Dr. Steffen's general interest was the study of processes related to climate and cryosphere interaction in polar and alpine regions based on in-situ and satellite measurements and using climate system modeling to study their sensitivity. In particular, he studied and evaluated sea-level changes and sensitivity studies of large ice sheets using in situ and modeling results. Most of this research was supported by the NASA/NSF initiative called PARCA: Program in Regional Arctic Climate Assessment.

Current Research

Former CIRES Director and Fellow Konrad Steffen died tragically in August 2020, in Greenland.

 

 



View Publications

  • Heilig A; Eisen O; Schneebeli M; MacFerrin M; Stevens CM; Vandecrux B; Steffen K. (Jan 2020). Relating regional and point measurements of accumulation in southwest Greenland. The Cryosphere , 14(1), 385-402. 10.5194/tc-14-385-2020
  • Ligtenberg, S. R. M., Nol, B. P. Y., Howat, I. M., Box, J. E., Mosley-Thompson, E., McConnell, J. R., Steffen, K., Harper, J. T., Das, S. B., van den Broeke, M. R., Kuipers Munneke, P. (2015). Elevation change of the Greenland Ice Sheet due to surface mass balance and firn processes, 19602014. The Cryosphere, 9(6). 10.5194/TC-9-2009-2015
  • Steffen, Konrad, Meier, Ueli, Kchli, Christian, Manser, Rolf. (2015). Forschung zur richtigen Zeit, umsetzungsorientiert und politisch eingebettet. Schweizerische Zeitschrift fur Forstwesen, 166(6). 10.3188/SZF.2015.0348
  • Mernild, Sebastian H., Holland, David M., Holland, Denise, Rosing-Asvid, Aqqalu, Yde, Jacob C., Liston, Glen E., Steffen, Konrad. (2015). Freshwater Flux and Spatiotemporal Simulated Runoff Variability into Ilulissat Icefjord, West Greenland, Linked to Salinity and Temperature Observations near Tidewater Glacier Margins Obtained Using Instrumented Ringed Seals. Journal of Physical Oceanography, 45(5). 10.1175/JPO-D-14-0217.1
  • Beckerman, Andrew P., Cappelen, John, Hanna, Edward, Malmros, Jeppe K., McConnell, Joseph R., Mernild, Sebastian H., Sigl, Michael, Steffen, Konrad, Yde, Jacob C. (2015). Greenland precipitation trends in a long-term instrumental climate context (1890-2012): evaluation of coastal and ice core records: PRECIPITATION IN GREENLAND. International Journal of Climatology. 10.1002/JOC.3986
  • Miller, NB, MD Shupe, CJ Cox, VP Walden, DD Turner and K Steffen. (AUG 2015). Cloud Radiative Forcing at Summit, Greenland. JOURNAL OF CLIMATE, 28(15), 6267-6280. 10.1175/JCLI-D-15-0076.1
  • Cox, CJ, VP Walden, GP Compo, PM Rowe, MD Shupe and K Steffen. (16-Nov 2014). Downwelling longwave flux over Summit, Greenland, 2010-2012: Analysis of surface-based observations and evaluation of ERA-Interim using wavelets. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 119(21), 12317-12337. 10.1002/2014JD021975
  • McGrath, D, K Steffen, PR Holland, T Scambos, H Rajaram, W Abdalati and E Rignot. (MAR 2014). The structure and effect of suture zones in the Larsen C Ice Shelf, Antarctica. JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, 119(3), 588-602. 10.1002/2013JF002935
  • Steen-Larsen, HC, V Masson-Delmotte, M Hirabayashi, R Winkler, K Satow, F Prie, N Bayou, E Brun, KM Cuffey, D Dahl-Jensen, M Dumont, M Guillevic, S Kipfstuhl, A Landais, T Popp, C Risi, K Steffen, B Stenni and AE Sveinbjornsdottir. (2014). What controls the isotopic composition of Greenland surface snow?. CLIMATE OF THE PAST, 10(1), 377-392. 10.5194/cp-10-377-2014
  • Dahl-Jensen, D, MR Albert, A Aldahan, N Azuma, D Balslev-Clausen, M Baumgartner, AM Berggren, M Bigler, T Binder, T Blunier, JC Bourgeois, EJ Brook, SL Buchardt, C Buizert, E Capron, J Chappellaz, J Chung, HB Clausen, I Cvijanovic, SM Davies, P Ditlevsen, O Eicher, H Fischer, DA Fisher, LG Fleet, G Gfeller, V Gkinis, S Gogineni, K Goto-Azuma, A Grinsted, H Gudlaugsdottir, M Guillevic, SB Hansen, M Hansson, M Hirabayashi, S Hong, SD Hur, P Huybrechts, CS Hvidberg, Y Iizuka, T Jenk, SJ Johnsen, TR Jones, J Jouzel, NB Karlsson, K Kawamura, K Keegan, E Kettner, S Kipfstuhl, HA Kjaer, M Koutnik, T Kuramoto, P Kohler, T Laepple, A Landais, PL Langen, LB Larsen, D Leuenberger, M Leuenberger, C Leuschen, J Li, V Lipenkov, P Martinerie, OJ Maselli, V Masson-Delmotte, JR McConnell, H Miller, O Mini, A Miyamoto, M Montagnat-Rentier, R Mulvaney, R Muscheler, AJ Orsi, J Paden, C Panton, F Pattyn, JR Petit, K Pol, T Popp, G Possnert, F Prie, M Prokopiou, A Quiquet, SO Rasmussen, D Raynaud, J Ren, C Reutenauer, C Ritz, T Rockmann, JL Rosen, M Rubino, O Rybak, D Samyn, CJ Sapart, A Schilt, AMZ Schmidt, J Schwander, S Schupbach, I Seierstad, JP Severinghaus, S Sheldon, SB Simonsen, J Sjolte, AM Solgaard, T Sowers, P Sperlich, HC Steen-Larsen, K Steffen, JP Steffensen, D Steinhage, TF Stocker, C Stowasser, AS Sturevik, WT Sturges, A Sveinbjornsdottir, A Svensson, JL Tison, J Uetake, P Vallelonga, RSW van de Wal, G van der Wel, BH Vaughn, B Vinther, E Waddington, A Wegner, I Weikusat, JWC White, F Wilhelms, M Winstrup, E Witrant, EW Wolff, C Xiao and J Zheng. (24-Jan 2013). Eemian interglacial reconstructed from a Greenland folded ice core. NATURE, 493(7433), 489-494. 10.1038/nature11789
  • Petrenko, VV, P Martinerie, P Novelli, DM Etheridge, I Levin, Z Wang, T Blunier, J Chappellaz, J Kaiser, P Lang, LP Steele, S Hammer, J Mak, RL Langenfelds, J Schwander, JP Severinghaus, E Witrant, G Petron, MO Battle, G Forster, WT Sturges, JF Lamarque, K Steffen and JWC White. (2013). A 60 yr record of atmospheric carbon monoxide reconstructed from Greenland firn air. ATMOSPHERIC CHEMISTRY AND PHYSICS, 13(15), 7567-7585. 10.5194/acp-13-7567-2013
  • McGrath, D, W Colgan, N Bayou, A Muto and K Steffen. (28-May 2013). Recent warming at Summit, Greenland: Global context and implications. GEOPHYSICAL RESEARCH LETTERS, 40(10), 2091-2096. 10.1002/grl.50456
  • Phillips, T, H Rajaram, W Colgan, K Steffen and W Abdalati. (SEP 2013). Evaluation of cryo-hydrologic warming as an explanation for increased ice velocities in the wet snow zone, Sermeq Avannarleq, West Greenland. JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, 118(3), 1241-1256. 10.1002/jgrf.20079
  • Bennartz, R, MD Shupe, DD Turner, VP Walden, K Steffen, CJ Cox, MS Kulie, NB Miller and C Pettersen. (4-Apr 2013). July 2012 Greenland melt extent enhanced by low-level liquid clouds. NATURE, 496(7443), 83-86. 10.1038/nature12002
  • Hanna, E, JM Jones, J Cappelen, SH Mernild, L Wood, K Steffen and P Huybrechts. (MAR 2013). The influence of North Atlantic atmospheric and oceanic forcing effects on 1900-2010 Greenland summer climate and ice melt/runoff. INTERNATIONAL JOURNAL OF CLIMATOLOGY, 33(4), 862-880. 10.1002/joc.3475
  • McGrath, D, K Steffen, T Scambos, H Rajaram, G Casassa and JLR Lagos. (2012). Basal crevasses and associated surface crevassing on the Larsen C ice shelf, Antarctica, and their role in ice-shelf instability. ANNALS OF GLACIOLOGY, 53(60), 10-18. 10.3189/2012AoG60A005
  • Liang, YL, W Colgan, Q Lv, K Steffen, W Abdalati, J Stroeve, D Gallaher and N Bayou. (AUG 2012). A decadal investigation of supraglacial lakes in West Greenland using a fully automatic detection and tracking algorithm. REMOTE SENSING OF ENVIRONMENT, 123, 127-138. 10.1016/j.rse.2012.03.020
  • Box, JE, X Fettweis, JC Stroeve, M Tedesco, DK Hall and K Steffen. (2012). Greenland ice sheet albedo feedback: thermodynamics and atmospheric drivers. CRYOSPHERE, 6(4), 821-839. 10.5194/tc-6-821-2012
  • McGrath, D, K Steffen, H Rajaram, T Scambos, W Abdalati and E Rignot. (29-Aug 2012). Basal crevasses on the Larsen C Ice Shelf, Antarctica: Implications for meltwater ponding and hydrofracture. GEOPHYSICAL RESEARCH LETTERS, 39. 10.1029/2012GL052413
  • Colgan, W, H Rajaram, RS Anderson, K Steffen, HJ Zwally, T Phillips and W Abdalati. (2012). The annual glaciohydrology cycle in the ablation zone of the Greenland ice sheet: Part 2. Observed and modeled ice flow. JOURNAL OF GLACIOLOGY, 58(207), 51-64. 10.3189/2012JoG11J081
  • Tedesco, M, M Luthje, K Steffen, N Steiner, X Fettweis, I Willis, N Bayou and A Banwell. (18-Jan 2012). Measurement and modeling of ablation of the bottom of supraglacial lakes in western Greenland. GEOPHYSICAL RESEARCH LETTERS, 39. 10.1029/2011GL049882
  • Fausto, RS, AP Ahlstrom, D Van As and K Steffen. (2011). Present-day temperature standard deviation parameterization for Greenland. JOURNAL OF GLACIOLOGY, 57(206), 1181-1183.
  • Hanna, E, P Huybrechts, J Cappelen, K Steffen, RC Bales, E Burgess, JR McConnell, JP Steffensen, M Van den Broeke, L Wake, G Bigg, M Griffiths and D Savas. (28-Dec 2011). Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 116. 10.1029/2011JD016387
  • McGrath, D, W Colgan, K Steffen, P Lauffenburger and J Balog. (2011). Assessing the summer water budget of a moulin basin in the Sermeq Avannarleq ablation region, Greenland ice sheet. JOURNAL OF GLACIOLOGY, 57(205), 954-964.
  • Colgan, W, K Steffen, WS McLamb, W Abdalati, H Rajaram, R Motyka, T Phillips and R Anderson. (16-Sep 2011). An increase in crevasse extent, West Greenland: Hydrologic implications. GEOPHYSICAL RESEARCH LETTERS, 38. 10.1029/2011GL048491
  • Colgan, W, H Rajaram, R Anderson, K Steffen, T Phillips, I Joughin, HJ Zwally and W Abdalati. (2011). The annual glaciohydrology cycle in the ablation zone of the Greenland ice sheet: Part 1. Hydrology model. JOURNAL OF GLACIOLOGY, 57(204), 697-709. 10.3189/002214311797409668
  • Muto, A, TA Scambos, K Steffen, AG Slater and GD Clow. (12-Aug 2011). Recent surface temperature trends in the interior of East Antarctica from borehole firn temperature measurements and geophysical inverse methods. GEOPHYSICAL RESEARCH LETTERS, 38. 10.1029/2011GL048086
  • Phillips, T, S Leyk, H Rajaram, W Colgan, W Abdalati, D McGrath and K Steffen. (15-Sep 2011). Modeling moulin distribution on Sermeq Avannarleq glacier using ASTER and WorldView imagery and fuzzy set theory. REMOTE SENSING OF ENVIRONMENT, 115(9), 2292-2301. 10.1016/j.rse.2011.04.029
  • Steen-Larsen, HC, V Masson-Delmotte, J Sjolte, SJ Johnsen, BM Vinther, FM Breon, HB Clausen, D Dahl-Jensen, S Falourd, X Fettweis, H Gallee, J Jouzel, M Kageyama, H Lerche, B Minster, G Picard, HJ Punge, C Risi, D Salas, J Schwander, K Steffen, AE Sveinbjornsdottir, A Svensson and J White. (22-Mar 2011). Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 116. 10.1029/2010JD014311
  • McGrath, D, K Steffen, I Overeem, SH Mernild, B Hasholt and M van den Broeke. (2010). Sediment plumes as a proxy for local ice-sheet runoff in Kangerlussuaq Fjord, West Greenland. JOURNAL OF GLACIOLOGY, 56(199), 813-821. 10.3189/002214310794457227
  • Phillips, T, H Rajaram and K Steffen. (23-Oct 2010). Cryo-hydrologic warming: A potential mechanism for rapid thermal response of ice sheets. GEOPHYSICAL RESEARCH LETTERS, 37. 10.1029/2010GL044397
  • Ettema, J, MR van den Broeke, E van Meijgaard, WJ van de Berg, JE Box and K Steffen. (2010). Climate of the Greenland ice sheet using a high-resolution climate model - Part 1: Evaluation. CRYOSPHERE, 4(4), 511-527. 10.5194/tc-4-511-2010
  • Mernild, SH, IM Howat, Y Ahn, GE Liston, K Steffen, BH Jakobsen, B Hasholt, B Fog and D van As. (2010). Freshwater flux to Sermilik Fjord, SE Greenland. CRYOSPHERE, 4(4), 453-465. 10.5194/tc-4-453-2010
  • Mernild, SH, GE Liston, K Steffen and P Chylek. (2010). Meltwater flux and runoff modeling in the ablation area of Jakobshavn Isbrae, West Greenland. JOURNAL OF GLACIOLOGY, 56(195), 20-32.
  • Mernild, SH, GE Liston, K Steffen, M van den Broeke and B Hasholt. (2010). Runoff and mass-balance simulations from the Greenland Ice Sheet at Kangerlussuaq (Sondre Stromfjord) in a 30-year perspective, 1979-2008. CRYOSPHERE, 4(2), 231-242. 10.5194/tc-4-231-2010
  • Munneke, PK, MR van den Broeke, CH Reijmer, MM Helsen, W Boot, M Schneebeli and K Steffen. (2009). The role of radiation penetration in the energy budget of the snowpack at Summit, Greenland. CRYOSPHERE, 3(2), 155-165.
  • Fausto, RS, AP Ahlstrom, D van As, SJ Johnsen, PL Langen and K Steffen. (2009). Improving surface boundary conditions with focus on coupling snow densification and meltwater retention in large-scale ice-sheet models of Greenland. JOURNAL OF GLACIOLOGY, 55(193), 869-878.
  • Mernild, SH, GE Liston, CA Hiemstra, K Steffen, E Hanna and JH Christensen. (15-Aug 2009). Greenland Ice Sheet surface mass-balance modelling and freshwater flux for 2007, and in a 1995-2007 perspective. HYDROLOGICAL PROCESSES, 23(17), 2470-2484. 10.1002/hyp.7354
  • Rial, JA, C Tang and K Steffen. (2009). Glacial rumblings from Jakobshavn ice stream, Greenland. JOURNAL OF GLACIOLOGY, 55(191), 389-399.
  • Doherty, SJ, S Bojinski, A Henderson-Sellers, K Noone, D Goodrich, NL Bindoff, JA Church, KA Hibbard, TR Karl, L Kajefez-Bogataj, AH Lynch, DE Parker, IC Prentice, V Ramaswamy, RW Saunders, MS Smith, K Steffen, TF Stocker, PW Thorne, KE Trenberth, MM Verstraete and FW Zwiers. (APR 2009). LESSONS LEARNED FROM IPCC AR4 Scientific Developments Needed To Understand, Predict, And Respond To Climate Change. BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY, 90(4), 497-513. 10.1175/2008BAMS2643.1
  • Mernild, SH, GE Liston, CA Hiemstra and K Steffen. (DEC 2008). Surface Melt Area and Water Balance Modeling on the Greenland Ice Sheet 1995-2005. JOURNAL OF HYDROMETEOROLOGY, 9(6), 1191-1211. 10.1175/2008JHM957.1
  • Hall, DK, JE Box, KA Casey, SJ Hook, CA Shuman and K Steffen. (15-Oct 2008). Comparison of satellite-derived and in-situ observations of ice and snow surface temperatures over Greenland. REMOTE SENSING OF ENVIRONMENT, 112(10), 3739-3749. 10.1016/j.rse.2008.05.007
  • Rignot, E and K Steffen. (17-Jan 2008). Channelized bottom melting and stability of floating ice shelves. GEOPHYSICAL RESEARCH LETTERS, 35(2). 10.1029/2007GL031765
  • Hanna, E, P Huybrechts, K Steffen, J Cappelen, R Huff, C Shuman, T Irvine-Fynn, S Wise and M Griffiths. (15-Jan 2008). Increased runoff from melt from the Greenland Ice Sheet: A response to global warming. JOURNAL OF CLIMATE, 21(2), 331-341. 10.1175/2007JCLI1964.1
  • Alfieri, JG, PD Blanken, DN Yates and K Steffen. (APR 2007). Variability in the environmental factors driving evapotranspiration from a grazed rangeland during severe drought conditions. JOURNAL OF HYDROMETEOROLOGY, 8(2), 207-220. 10.1175/JHM569.1
  • Wang, L, M Sharp, B Rivard and K Steffen. (18-Dec 2007). Melt season duration and ice layer formation on the Greenland ice sheet, 2000-2004. JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, 112(F4). 10.1029/2007JF000760
  • Cullen, NJ, K Steffen and PD Blanken. (FEB 2007). Nonstationarity of turbulent heat fluxes at Summit, Greenland. BOUNDARY-LAYER METEOROLOGY, 122(2), 439-455. 10.1007/s10546-006-9112-2
  • Nghiem, S. V., K. Steffen, G. Neumann and R. Huff. (2007 2007). Snow accumulation and snowmelt monitoring in Greenland and Antarctica. DYNAMIC PLANET: MONITORING AND UNDERSTANDING A DYNAMIC PLANET WITH GEODETIC AND OCEANOGRAPHIC TOOLS, 130, 31-+.
  • Cullen, NJ, T Molg, G Kaser, K Hussein, K Steffen and DR Hardy. (31-Aug 2006). Kilimanjaro Glaciers: Recent areal extent from satellite data and new interpretation of observed 20th century retreat rates. GEOPHYSICAL RESEARCH LETTERS, 33(16). 10.1029/2006GL027084
  • Box, JE, DH Bromwich, BA Veenhuis, LS Bai, JC Stroeve, JC Rogers, K Steffen, T Haran and SH Wang. (15-Jun 2006). Greenland ice sheet surface mass balance variability (1988-2004) from calibrated polar MM5 output. JOURNAL OF CLIMATE, 19(12), 2783-2800. 10.1175/JCLI3738.1
  • Orr, A, E Hanna, JCR Hunt, J Cappelen, K Steffen and AG Stephens. (OCT 2005). Characteristics of stable flows over Southern Greenland. PURE AND APPLIED GEOPHYSICS, 162(10), 1747-1778. 10.1007/s00024-005-2691-x
  • Nghiem, SV, K Steffen, G Neumann and R Huff. (25-Jun 2005). Mapping of ice layer extent and snow accumulation in the percolation zone of the Greenland ice sheet. JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, 110(F2). 10.1029/2004JF000234
  • Hanna, E, P Huybrechts, I Janssens, J Cappelen, K Steffen and A Stephens. (12-Jul 2005). Runoff and mass balance of the Greenland ice sheet: 1958-2003. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 110(D13). 10.1029/2004JD005641
  • Steffen, K, SV Nghiem, R Huff and G Neumann. (21-Oct 2004). The melt anomaly of 2002 on the Greenland Ice Sheet from active and passive microwave satellite observations. GEOPHYSICAL RESEARCH LETTERS, 31(20). 10.1029/2004GL020444
  • Thomas, RH, W Abdalati, E Frederick, WB Krabill, S Manizade and K Steffen. (2003). Investigation of surface melting and dynamic thinning on Jakobshavn Isbrae, Greenland. JOURNAL OF GLACIOLOGY, 49(165), 231-239. 10.3189/172756503781830764
  • Smith, LC, YW Sheng, RR Forster, K Steffen, KE Frey and DE Alsdorf. (21-Oct 2003). Melting of small Arctic ice caps observed from ERS scatterometer time series. GEOPHYSICAL RESEARCH LETTERS, 30(20). 10.1029/2003GL017641
  • Zwally, HJ, W Abdalati, T Herring, K Larson, J Saba and K Steffen. (12-Jul 2002). Surface melt-induced acceleration of Greenland ice-sheet flow. SCIENCE, 297(5579), 218-222. 10.1126/science.1072708
  • Honrath, RE, Y Lu, MC Peterson, JE Dibb, MA Arsenault, NJ Cullen and K Steffen. (MAY-JUN 2002). Vertical fluxes of NOx, HONO, and HNO3 above the snowpack at Summit, Greenland. ATMOSPHERIC ENVIRONMENT, 36(15-16), 2629-2640. 10.1016/S1352-2310(02)00132-2
  • Jacobi, HW, MM Frey, MA Hutterli, RC Bales, O Schrems, NJ Cullen, K Steffen and C Koehler. (MAY-JUN 2002). Measurements of hydrogen peroxide and formaldehyde exchange between the atmosphere and surface snow at Summit, Greenland. ATMOSPHERIC ENVIRONMENT, 36(15-16), 2619-2628. 10.1016/S1352-2310(02)00106-1
  • Helmig, D, J Boulter, D David, JW Birks, NJ Cullen, K Steffen, BJ Johnson and SJ Oltmans. (MAY-JUN 2002). Ozone and meteorological Summit, Greenland, boundary-layer conditions at during 3-21 June 2000. ATMOSPHERIC ENVIRONMENT, 36(15-16), 2595-2608. 10.1016/S1352-2310(02)00129-2
  • Dassau, TM, AL Sumner, SL Koeniger, PB Shepson, J Yang, RE Honrath, NJ Cullen, K Steffen, HW Jacobi, M Frey and RC Bales. (SEP-OCT 2002). Investigation of the role of the snowpack on atmospheric formaldehyde chemistry at Summit, Greenland. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 107(D19). 10.1029/2002JD002182
  • Thomas, RH and PARCA Investigators. (27-Dec 2001). Program for arctic regional climate assessment (PARCA): Goals, key findings, and future directions. J. Geophys. Res.-Atmos., 106(D24), 33691-33705.
  • Shuman, CA, K Steffen, JE Box and CR Stearns. (2001). A dozen years of temperature observations at the summit: central Greenland automatic weather stations 1987-99. JOURNAL OF APPLIED METEOROLOGY, 40(4), 741-752. 10.1175/1520-0450(2001)040<0741:ADYOTO>2.0.CO;2
  • Steffen, K and J Heinrichs. (SEP 2001). C-band SAR backscatter characteristics of Arctic Sea and land ice during winter. ATMOSPHERE-OCEAN, 39(3), 289-299.
  • Cullen, NJ and K Steffen. (1-Dec 2001). Unstable near-surface boundary conditions in summer on top of the Greenland ice sheet. GEOPHYSICAL RESEARCH LETTERS, 28(23), 4491-4493. 10.1029/2001GL013417
  • Comiso, JC and K Steffen. (15-Dec 2001). Studies of Antarctic sea ice concentrations from satellite data and their applications. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 106(C12), 31361-31385. 10.1029/2001JC000823
  • Abdalati, W and K Steffen. (27-Dec 2001). Greenland ice sheet melt extent: 1979-1999. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 106(D24), 33983-33988. 10.1029/2001JD900181
  • Steffen, K and J Box. (27-Dec 2001). Surface climatology of the Greenland ice sheet: Greenland climate network 1995-1999. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 106(D24), 33951-33964. 10.1029/2001JD900161
  • Mosley-Thompson, E, JR McConnell, RC Bales, PN Lin, K Steffen, LG Thompson, R Edwards and D Bathke. (27-Dec 2001). Local to regional-scale variability of annual net accumulation on the Greenland ice sheet from PARCA cores. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 106(D24), 33839-33851. 10.1029/2001JD900067
  • Nghiem, SV, K Steffen, R Kwok and WY Tsai. (2001). Detection of snowmelt regions on the Greenland ice sheet using diurnal backscatter change. JOURNAL OF GLACIOLOGY, 47(159), 539-547. 10.3189/172756501781831738
  • Bromwich, DH, JJ Cassano, T Klein, G Heinemann, KM Hines, K Steffen and JE Box. (2001). Mesoscale modeling of katabatic winds over Greenland with the Polar MM5. MONTHLY WEATHER REVIEW, 129(9), 2290-2309. 10.1175/1520-0493(2001)129<2290:MMOKWO>2.0.CO;2
  • Cassano, JJ, JE Box, DH Bromwich, L Li and K Steffen. (27-Dec 2001). Evaluation of polar MM5 simulations of Greenlands atmospheric circulation. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 106(D24), 33867-33889. 10.1029/2001JD900044
  • Box, JE and K Steffen. (27-Dec 2001). Sublimation on the Greenland ice sheet from automated weather station observations. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 106(D24), 33965-33981. 10.1029/2001JD900219
  • Weaver, RLS, K Steffen, J Heinrichs, JA Maslanik and GM Flato. (2000). Data assimilation in sea-ice monitoring. ANNALS OF GLACIOLOGY, VOL 31, 2000, 31, 327-332. 10.3189/172756400781820039
  • Steffen, K, W Abdalati and I Sherjal. (1999). Faceted crystal formation in the northeast Greenland low-accumulation region. JOURNAL OF GLACIOLOGY, 45(149), 63-68. 10.3189/S002214300000304X
  • Stroeve, J and K Steffen. (JAN 1998). Variability of AVHRR-derived clear-sky surface temperature over the Greenland ice sheet. JOURNAL OF APPLIED METEOROLOGY, 37(1), 23-31. 10.1175/1520-0450(1998)037<0023:VOADCS>2.0.CO;2
  • Serreze, MC, JR Key, JE Box, JA Maslanik and K Steffen. (FEB 1998). A new monthly climatology of global radiation for the Arctic and comparisons with NCEP-NCAR reanalysis and ISCCP-C2 fields. JOURNAL OF CLIMATE, 11(2), 121-136. 10.1175/1520-0442(1998)011<0121:ANMCOG>2.0.CO;2
  • Anklin, M, RC Bales, E Mosley-Thompson and K Steffen. (27-Nov 1998). Annual accumulation at two sites in northwest Greenland during recent centuries. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 103(D22), 28775-28783. 10.1029/98JD02718
  • Abdalati, W and K Steffen. (1998). Accumulation and hoar effects on microwave emission in the Greenland ice-sheet dry-snow zones. JOURNAL OF GLACIOLOGY, 44(148), 523-531.
  • Abdalati, W and K Steffen. (FEB 1997). Snowmelt on the Greenland ice sheet as derived from passive microwave satellite data. JOURNAL OF CLIMATE, 10(2), 165-175. 10.1175/1520-0442(1997)010<0165:SOTGIS>2.0.CO;2
  • Abdalati, W and K Steffen. (15-Jul 1997). The apparent effects of the Mt Pinatubo eruption on the Greenland ice sheet melt extent. GEOPHYSICAL RESEARCH LETTERS, 24(14), 1795-1797. 10.1029/97GL01706
  • Stroeve, J, A Nolin and K Steffen. (DEC 1997). Comparison of AVHRR-derived and in situ surface albedo over the Greenland ice sheet. REMOTE SENSING OF ENVIRONMENT, 62(3), 262-276. 10.1016/S0034-4257(97)00107-7
  • Stroeve, J, M Haefliger and K Steffen. (AUG 1996). Surface temperature from ERS-1 ATSR infrared thermal satellite data in polar regions. JOURNAL OF APPLIED METEOROLOGY, 35(8), 1231-1239. 10.1175/1520-0450(1996)035<1231:STFAIT>2.0.CO;2
  • Steffen, K and T DeMaria. (NOV 1996). Surface energy fluxes of arctic winter sea ice in Barrow strait. JOURNAL OF APPLIED METEOROLOGY, 35(11), 2067-2079. 10.1175/1520-0450(1996)035<2067:SEFOAW>2.0.CO;2
  • ABDALATI, W and K STEFFEN. (1-Apr 1995). PASSIVE MICROWAVE-DERIVED SNOW MELT REGIONS ON THE GREENLAND ICE-SHEET. GEOPHYSICAL RESEARCH LETTERS, 22(7), 787-790. 10.1029/95GL00433
  • ABDALATI, W, K STEFFEN, C OTTO and KC JEZEK. (10-May 1995). COMPARISON OF BRIGHTNESS TEMPERATURES FROM SSMI INSTRUMENTS ON THE DMSP F8 AND F11 SATELLITES FOR ANTARCTICA AND THE GREENLAND ICE-SHEET. INTERNATIONAL JOURNAL OF REMOTE SENSING, 16(7), 1223-1229. 10.1080/01431169508954473
  • STEFFEN, K and J HEINRICHS. (15-Nov 1994). FEASIBILITY OF SEA-ICE TYPING WITH SYNTHETIC-APERTURE-RADAR (SAR) - MERGING OF LANDSAT THEMATIC MAPPER AND ERS-1 SAR SATELLITE IMAGERY. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 99(C11), 22413-22424. 10.1029/94JC01398
  • STEFFEN, K, W ABDALATI and J STROEVE. (1993). CLIMATE SENSITIVITY STUDIES OF THE GREENLAND ICE-SHEET USING SATELLITE AVHRR, SMMR, SSM/I AND IN-SITU DATA. METEOROLOGY AND ATMOSPHERIC PHYSICS, 51(4-Mar), 239-258. 10.1007/BF01030497
  • EMERY, WJ, M RADEBAUGH, CW FOWLER, D CAVALIERI and K STEFFEN. (15-Dec 1991). A COMPARISON OF SEA ICE PARAMETERS COMPUTED FROM ADVANCED VERY HIGH-RESOLUTION RADIOMETER AND LANDSAT SATELLITE IMAGERY AND FROM AIRBORNE PASSIVE MICROWAVE RADIOMETRY. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 96(C12), 22075-22085. 10.1029/91JC02337
  • STEFFEN, K and A SCHWEIGER. (15-Dec 1991). NASA TEAM ALGORITHM FOR SEA ICE CONCENTRATION RETRIEVAL FROM DEFENSE METEOROLOGICAL SATELLITE PROGRAM SPECIAL SENSOR MICROWAVE IMAGER - COMPARISON WITH LANDSAT SATELLITE IMAGERY. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 96(C12), 21971-21987. 10.1029/91JC02334
  • STEFFEN, K and AJ SCHWEIGER. (JAN 1990). A MULTISENSOR APPROACH TO SEA ICE CLASSIFICATION FOR THE VALIDATION OF DMSP-SSM/I PASSIVE MICROWAVE DERIVED SEA ICE PRODUCTS. PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING, 56(1), 75-82.
  • STEFFEN, K and JE LEWIS. (MAR 1988). SURFACE TEMPERATURES AND SEA ICE TYPING FOR NORTHERN BAFFIN-BAY. INTERNATIONAL JOURNAL OF REMOTE SENSING, 9(3), 409-422.
  • STEFFEN, K and JA MASLANIK. (15-Sep 1988). COMPARISON OF NIMBUS-7 SCANNING MULTICHANNEL MICROWAVE RADIOMETER RADIANCE AND DERIVED SEA ICE CONCENTRATIONS WITH LANDSAT IMAGERY FOR THE NORTH WATER AREA OF BAFFIN-BAY. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 93(C9), 10769-10781. 10.1029/JC093iC09p10769
  • STEFFEN, K. (1986). ICE CONDITIONS OF AN ARCTIC POLYNYA - NORTH WATER IN WINTER. JOURNAL OF GLACIOLOGY, 32(112), 383-390.
  • STEFFEN, K. (1985). WARM WATER CELLS IN THE NORTH WATER, NORTHERN BAFFIN-BAY DURING WINTER. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 90(NC5), 9129-9136. 10.1029/JC090iC05p09129
  • STEFFEN, K and A OHMURA. (1985). HEAT-EXCHANGE AND SURFACE CONDITIONS IN NORTH WATER, NORTHERN BAFFIN-BAY. ANNALS OF GLACIOLOGY, 6, 178-181.