Abstract
We present aircraft measurements of boundary-layer structure and surface turbulent fluxes from a flight over the Larsen Ice Shelf, Antarctica. Warm advection, associated with föhn flow, led to the formation of a stable boundary layer over the ice shelf, with a well-defined low-level jet at the top of the surface inversion. The strong shear associated with the jet kept the gradient Richardson number small and maintained a turbulent boundary layer over a depth of at least 600 m. The net surface energy balance amounted to 52 Wm−2, equivalent to a melt rate of 13 mm water per day, with net radiation (48 Wm−2) making the largest contribution to melt. The contribution from the sensible heat flux (13 Wm−2) was largely balanced by an upwards latent heat flux (−9 Wm−2). These measurements provide insight into the processes that control surface melt rates in an area that has experienced recent rapid warming and deglaciation.
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References
Anderson PS (2003). Fine-scale structure observed in a stable atmospheric boundary layer by Sodar and kite-borne tethersonde. Boundary-Layer Meteorol 107: 323–351
Bannehr L, Glover V (1991) Preprocessing of airborne pyranometer data. NCAR Technical Note NCAR/TN-364+STR. National Center for Atmospheric Research, Boulder, 35 pp
Banta RM, Pichugina YL and Brewer WA (2006). Turbulent velocity-variance profiles in the stable boundary layer generated by a nocturnal low-level jet. J Atmos Sci 63: 2700–2718
Bromwich DH, Monaghan AJ, Manning KW and Powers JG (2005). Real-time forecasting for the Antarctic: an evaluation of the Antarctic Mesoscale Prediction System (AMPS). Mon Wea Rev 133: 579–603
Caughey SJ, Wyngaard JC and Kaimal JC (1979). Turbulence in the evolving stable boundary layer. J Atmos Sci 36: 1041–1052
Cook AJ, Fox AJ, Vaughan DG and Ferrigno JG (2005). Retreating glacier fronts on the Antarctic Peninsula over the past half-century. Science 308: 541–544
Crawford TL, Dobosy RJ and Dumas EJ (1996). Aircraft wind measurement considering lift-induced upwash. Boundary-Layer Meteorol 80: 79–94
Garman KE, Hill KA, Wyss P, Carlsen M, Zimmerman JR, Stirm BH, Carney TQ, Santini R and Shepson PB (2006). An airborne and wind tunnel evaluation of a wind turbulence measurement system for aircraft-based flux measurements. J Atmos Ocean Tech 23: 1696–1708
Heinemann G (2004). Local similarity properties of the continuously turbulent stable boundary layer over Greenland. Boundary-Layer Meteorol 112: 283–305
Hunt JCR, Kaimal JC and Gaynor JE (1985). Some observations of turbulence structure in stable layers. Quart J Roy Meteorol Soc 111: 793–815
King JC (1989). Low-level wind profiles at an antarctic coastal station. Antarct Sci 1: 169–178
King JC (1990). Some measurements of turbulence over an antarctic ice shelf. Quart J Roy Meteorol Soc 116: 379–400
King JC and Turner J (1997). Antarctic meteorology and climatology. Cambridge University Press, Cambridge, 409
King JC, Anderson PS, Smith MC and Mobbs SD (1996). The surface energy and mass balance at Halley, Antarctica during winter. J Geophys Res 101: 19119–19128
King JC, Turner J, Marshall GJ, Connolley WM and Lachlan-Cope TA (2004). Antarctic peninsula climate variability and its causes as revealed by analysis of instrumental records. In: Domack, E, Burnett, A, Convey, P, Kirby, M, and Bindschadler, R (eds) Antarctic peninsula climate variability: a historical and paleoenvironmental perspective, pp 17–30. American Geophysical Union, Washington
Lenschow DH (1986). Aircraft measurements in the boundary layer. In: Lenschow, DH (eds) Probing the atmospheric boundary layer, pp 39–55. American Meteorological Society, Boston
Mahrt L and Vickers D (2002). Contrasting vertical structures of nocturnal boundary layers. Boundary-Layer Meteorol 105: 351–363
Marshall GJ, Orr A, van Lipzig N and King JC (2006). The impact of a changing Southern Hemisphere Annular Mode on Antarctic Peninsula summer temperatures. J Climate 19: 5388–5404
Mastrantonio G, Malvestuto V, Argentini S, Georgiadis T and Viola A (1999). Evidence of a convective boundary layer developing on the Antarctic Plateau during the summer. Meteorol Atmos Phys 71: 127–132
Morris EM and Vaughan DG (2003). Spatial and temporal variation of surface temperature on the Antarctic peninsula and the limit of viability of ice shelves. In: Domack, E, Burnett, A, Convey, P, Kirby, M and Bindschadler, R (eds) Antarctic peninsula climate variability: a historical and paleoenvironmental perspective, pp 61–68. American Geophysical Union, Washington
Orr A, Cresswell D, Marshall GJ, Hunt JCR, Sommeria J, Wang CG, Light M (2004) A ‘low-level’ explanation for the recent large warming trend over the western Antarctic Peninsula involving blocked winds and changes in zonal circulation. Geophys Res Lett 31:art. no.-L06204
Orr A, Marshall GJ, Hunt JCR, Sommeria J, Wang CG, van Lipzig NPM, Cresswell D and King JC (2008). Characteristics of summer airflow over the Antarctic Peninsula in response to recent strengthening of westerly circumpolar winds. J Atmos Sci 65: 1396–1413
Parish TR (1983). The influence of the Antarctic Peninsula on the wind field over the western Weddell Sea. J Geophys Res 88: 2684–2692
Poulos GS, Blumen W, Fritts DC, Lundquist JK, Sun J, Burns SP, Nappo C, Banta R, Newsom R, Cuxart J, Terradellas E, Balsley B and Jensen M (2002). CASES-99: a comprehensive investigation of the stable nocturnal boundary layer. Bull Am Meteorol Soc 83: 555–581
Thorpe AJ and Guymer TH (1977). The nocturnal jet. Quart J Roy Meteorol Soc 103: 633–653
Van den Broeke M (2005). Strong surface melting preceeded collapse of Antarctic Peninsula ice shelf. Geophys Res Lett 32: L12815. doi:10.1029/2005GL023247
Van den Broeke M, Reijmer C and Van De Wal R (2004). Surface radiation balance in Antarctica as measured with automatic weather stations. J Geophys Res 109: D09103. doi:10.1029/2003JD004394
Vaughan DG and Doake CSM (1996). Recent atmospheric warming and retreat of ice shelves on the Antarctic Peninsula. Nature 379: 328–330
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King, J.C., Lachlan-Cope, T.A., Ladkin, R.S. et al. Airborne Measurements in the Stable Boundary Layer over the Larsen Ice Shelf, Antarctica. Boundary-Layer Meteorol 127, 413–428 (2008). https://doi.org/10.1007/s10546-008-9271-4
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DOI: https://doi.org/10.1007/s10546-008-9271-4