Cross-lake variation of physical limnological and climatological processes of Great Slave Lake

被引:19
作者
Schertzer, WM
Rouse, WR
Blanken, PD
机构
[1] Environm Canada, Canada Ctr Inland Waters, Natl Water Res Inst, Burlington, ON L7R 4A6, Canada
[2] McMaster Univ, Sch Geog & Geol, Hamilton, ON L8S 4K1, Canada
[3] Univ Colorado, Dept Geog, Boulder, CO 80309 USA
[4] Univ Colorado, Environm Studies Program, Boulder, CO 80309 USA
基金
加拿大自然科学与工程研究理事会;
关键词
over-lake meteorology; surface waves; evaporation; heat budget; thermal responses; heat content; northern lakes;
D O I
10.1080/02723646.2000.10642716
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Cross-lake observations of meteorology, solar and longwave radiation, surface waves, and thermal structure were conducted in the main-lake section of Great Slave Lake as contribution to the Mackenzie Basin Global Energy and Water Cycle Experiment (GEWEX-MAGS-I) in the summer of 1998 and the winter of 1998/1999. Analysis of the principal meteorological variables showed significant nearshore and midlake differences especially after the period of ice break-up in June to mid-July In one case, high winds generated wind stresses up to 0.45 N m(-2) and significant wave heights up to 4 m. Thermal structure varied between nearshore and midlake regions. High winds significantly disrupted developing thermal stratification in early spring by deepening the midlake upper mixed layer from 5 to 20 m depth. Evaporation was highly episodic, varied up to eight times between nearshore and offshore stations. During spring, much of the energy receipt was used to heat the lake. During summer, the total surface heat flux was significantly affected by the episodic evaporative flux. Heat content analyses showed that rapid lake heating occurred from lune to early August (approximately 3.395 x 10(17) J d(-1)) followed by gradual heat loss from mid-August through to the end of December (approximately 1.730 x 10(17) J d(-1)). The annual range of heat content was 2.543 x 10(19) J.
引用
收藏
页码:385 / 406
页数:22
相关论文
共 51 条
[1]   Eddy covariance measurements of evaporation from Great Slave Lake, Northwest Territories, Canada [J].
Blanken, PD ;
Rouse, WR ;
Culf, AD ;
Spence, C ;
Boudreau, LD ;
Jasper, JN ;
Kochtubajda, B ;
Schertzer, WM ;
Marsh, P ;
Verseghy, D .
WATER RESOURCES RESEARCH, 2000, 36 (04) :1069-1077
[2]  
BLANKEN PD, 1998, P 3 SCI WORKSH MACK, P37
[3]   RESPONSE OF THE THERMAL STRUCTURE OF LAKE-ONTARIO TO DEEP COOLING WATER WITHDRAWALS AND TO GLOBAL WARMING [J].
BOYCE, FM ;
HAMBLIN, PF ;
HARVEY, LDD ;
SCHERTZER, WM ;
MCCRIMMON, RC .
JOURNAL OF GREAT LAKES RESEARCH, 1993, 19 (03) :603-616
[4]  
BRETSCHNEIDER CL, 1970, WAVE FORECASTING REL, V1, P1
[5]  
BUSSIERES N, 2000, UNPUB ATMOSPHERE OCE
[6]  
Croley II T. E., 1996, GLERL89 NOAA ERL
[7]  
Davies J. A., 1975, Boundary-Layer Meteorology, V9, P33, DOI 10.1007/BF00232252
[8]  
DERECKI JA, 1975, 342GLERL3 NOAA ERL
[9]  
Donelan M. A., 1977, SIMPLE NUMERICAL MOD
[10]  
GROEN P, 1976, OPSTELLEN OP OCEANOG, V11, P1