LINEAR AIR/WATER TEMPERATURE CORRELATIONS FOR STREAMS DURING OPEN WATER PERIODS
LINEAR AIR/WATER TEMPERATURE CORRELATIONS FOR STREAMS DURING OPEN WATER PERIODS
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DOI：
10.1061/(asce)1084-0699(2000)5:3(317
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发表时间：
2000-07-01
影响因子：
2.4
通讯作者：
Stefan, Heinz G.
中科院分区：
文献类型：
--
作者：
Erickson, Troy R.;Stefan, Heinz G.
研究了气温与水温之间的线性相关关系。时滞、时间尺度和中尺度气温变率影响线性模式回归系数的大小以及相关性的强度。发现每月和每周的时间尺度产生的相关性最好。受蓄水、水库和/或人工热输入影响的溪流通常会限制空气/溪流的相互作用，并产生较差的相关性。地下水流入、溪流遮蔽和遮风罩限制了气温对溪流温度的影响，从而降低了这种关系的斜率，但通常不会影响相关性的强度。明尼苏达州的空气/气流温度相关性在经历的气温范围内保持线性，而俄克拉何马州的空气/气流温度相关性因蒸发冷却而超过约25摄氏度而偏离线性。在极端气温下，空气/气流温度的线性关联式会高估气流温度。
The linear correlation of air temperatures and stream temperatures was investigated in this paper. Time lag, time scale, and mesoscale air temperature variability influence the magnitude of the regression coefficients of the linear model, as well as the strength of correlation. Monthly and weekly time scales were found to produce the best correlations. Streams affected by impoundments, reservoirs, and/or artificial heat inputs generally limit the air/stream interaction and produce poor correlations. Ground-water inflows, stream shading, and wind sheltering limit the influence of air temperature on stream temperature thereby reducing the slope of the relationship, but do not typically affect the strength of correlation. Air/stream temperature correlations from Minnesota remained linear throughout the extent of air temperatures experienced, whereas air/stream temperature correlations from Oklahoma departed from linearity as air temperatures exceeded approximately 25 degrees C due to evaporative cooling. Linear air/stream temperature correlations will overestimate stream temperatures at extreme air temperatures.