Journal
HYDROLOGICAL PROCESSES
Volume 17, Issue 15, Pages 3069-3084Publisher
JOHN WILEY & SONS LTD
DOI: 10.1002/hyp.1280
Keywords
water-air temperature relationships; discharge effects; catchment scale
Categories
Ask authors/readers for more resources
The nature of the water-air temperature relationship, and its moderation by discharge, were investigated for catchments ranging in size from 2.1 to 601 km(2) in the Exe basin, Devon, UK and for data relating to hourly, daily and weekly time bases. The sensitivity and explanatory power of simple water-air temperature regression models based on hourly data were improved by incorporation of a lag, which increased with catchment size, although relationships became more sensitive and less scattered as the time base of data increased from hourly to weekly mean values. Significant departures from linearity in water-air temperature relationships were evident for hourly, but not for daily mean or weekly mean, data. A clear tendency for relationships between water and air temperatures to be stronger and more sensitive for flows below median levels was apparent, and multiple regression analysis also revealed water temperature to be inversely related to discharge for all catchments and time-scales. However, discharge had a greater impact in accounting for water temperature variation at shorter time-scales and in larger catchments. Copyright (C) 2003 John Wiley Sons, Ltd.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available