Abstract
Direct measurements of evaporation from Great Slave Lake, Northwest Territories, Canada, over a six-year period are compared in terms of the influence of time scales on the magnitude and control of the process. Based on measurements using the eddy covariance method, both the latent and sensible heat fluxes were consistently small following ice break up, but increased dramatically as ice formation commenced. Half of the total evaporative water loss occurred over only 20% of the observation periods. Large evaporation events occurred over periods typically lasting nearly three days, and were controlled by the product of the horizontal wind speed and the difference between vapor pressure at the water surface and atmosphere. Both a stepwise linear regression and principal component analysis were used to determine the sensitivity of the relationship between evaporation and its controls to various sampling intervals. Varying the sampling interval from one to six hours in 1-hr steps had no significant effect on the coefficients used to predict the 24-hr evaporation totals. The dichotomy between lake and land surfaces in terms of temporal changes in heat source and sink, and the longer duration for processes occurring over the lake than land are discussed.
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Blanken PD, Rouse WR, Culf AD, Spence C, Boudreau LD, Jasper JN, Kotchtubajda B, Schertzer WM, Marsh P, Verseghy D (2000) Eddy covariance measurements of evaporation from Great Slave Lake, Northwest Territories, Canada. Water Resour Res 36:1069–1078
Blanken PD, Rouse WR, Schertzer WM (2003) The enhancement of evaporation from a large northern lake by the entrainment of warm, dry air. J Hydrometeorol 4:680–693
Buck AL (1981) New equations for computing vapor pressure and enhancement factor. J Appl Meteor 20:1527–1532
Gu L, Fuentes JD, Shugart HH, Staebler RM, Black TA (1999) Responses of net ecosystem exchange of carbon dioxide to changes in cloudiness: results from two North American deciduous forests. J Geo Res 104:31,421–31,434
Gyakum J (1997) Cyclones and their role in high latitude water vapour transport. In: Proc 3 rd Scientific Workshop for the Mackenzie GEWEX Study (MAGS), University of Saskatchewan, Saskatoon, Saskatchewan, Canada, pp 28–30
Kaimal JC, Finnigan JJ (1994) Atmospheric boundary layer flows: their structure and measurement. Oxford University Press
Oswald CW, Rouse WR, Binyamin J (2007) Modeling lake energy fluxes in the Mackenzie River Basin using bulk aerodynamic mass transfer theory. (Vol. II, this book)
Quinn FH, den Hartog G (1981) Evaporation synthesis. In: Aubert EJ, Richards TL (eds) IFYGL — The international field year for the Great Lakes. National Oceanic and Atmospheric Administration, Ann Arbor, Michigan, pp 221–245
Rawson DS (1950) The physical limnology of Great Slave Lake. J Fish Res Board Can 8:3–66
Rouse WR, Blyth EM, Crawford RW, Gyakum JR, Janowicz JR, Kochtubajda B, Leighton HG, Marsh P, Martz L, Pietroniro A, Ritchie H, Schertzer WM, Soulis ED, Stewart RE, Strong GS, Woo MK (2003) Energy and water cycles in a high-latitude north-flowing river system. B Am Meteorol Soc 84:73–87
Rouse WR, Binyamin J, Blanken PD, Bussières N, Duguay CR, Oswald CJ, Schertzer WM, Spence C (2007) The influence of lakes on the regional energy and water balance of the central Mackenzie River Basin. (Vol. I, this book)
Rouse WR, Oswald CJ, Binyamin J, Blanken PD, Schertzer WM, Spence C (2003a) Interannual and seasonal variability of the surface energy balance and temperature of central Great Slave Lake. J Hydrometeorol 4:720–730
Rouse WR, Oswald CJ, Binyamin J, Spence C, Schertzer WM, Blanken PD, Bussières N, Duguay C (2005) The role of northern lakes in a regional energy balance. J Hydrometeorol 6:291–305
Schertzer WM (1997) Freshwater lakes. In: Bailey WG, Oke TR, Rouse WR (eds) The surface climates of Canada. McGill-Queens Press, Montreal, pp 124–148
Schertzer WM, Rouse WR, Blanken PD (2000) Cross-lake variation of physical limnological and climatological processes of Great Slave Lake. Phys Geog 21:385–406
Schertzer WM, Rouse WR, Blanken PD, Walker AE (2003) Over-lake meteorology, thermal response, heat content and estimate of the bulk heat exchange of Great Slave Lake during CAGES (1998-99). J Hydrometeorol 4:649–659
Schertzer WM, Rouse WR, Blanken PD, Walker AE, Lam DCL, León L (2007) Interannual variability of the thermal components and bulk heat exchange of Great Slave Lake. (Vol. II, this book)
Schotanus P, Niewstadt FTM, DeBruin HAR (1983) Temperature measurements with a sonic anemometer and its application to heat and moisture fluxes. Bound-Layer Meteorol 26:81–93
Schuepp PH, Leclearc MY, MacPherson JI, Desjardins, RL (1990) Footprint prediction of scalar fluxes from analytical solutions of the diffusion equations. Bound-Layer Meteorol 50:355–373
Shuttleworth WJ, Gash JHC, Lloyd D, McNeil DD, Moore CJ, Wallace JS (1988) An integrated micrometeorological system for evaporation measurements. Agr Forest Meteorol 43:295–317
Walker A, Silis A, Metcalf JR, Davey MR, Brown RD, Goodison BE (2000) Snow cover and lake ice determination in the MAGS region using passive microwave satellite and conventional data. In: Strong GS, Wilkinson YML (eds) Proc 5 th Sci Workshop Mackenzie GEWEX Study, Edmonton, AB, Canada, pp 39–42
Webb EK, Pearman GI, Leuning R (1980) Correction of flux measurements for density effects due to heat and water vapor transfer. Q J Roy Meteor Soc 106:85–100
Winter TC, Rosenberry DO, Sturrock AM (1995) Evaluation of 11 equations for determining evaporation for a small lake in north central United States. Water Resour Res 31:983–993
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Blanken, P., Rouse, W., Schertzer, W.M. (2008). The Time Scales of Evaporation from Great Slave Lake. In: Woo, Mk. (eds) Cold Region Atmospheric and Hydrologic Studies. The Mackenzie GEWEX Experience. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-75136-6_10
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DOI: https://doi.org/10.1007/978-3-540-75136-6_10
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