Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 18, issue 12
Articles | Volume 18, issue 12
https://doi.org/10.5194/hess-18-5361-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hess-18-5361-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 18, issue 12
Research article
 | Highlight paper
 | 
20 Dec 2014
Research article | Highlight paper |  | 20 Dec 2014

What causes cooling water temperature gradients in a forested stream reach?

G. Garner, I. A. Malcolm, J. P. Sadler, and D. M. Hannah

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Short summary
This study demonstrates the processes by which instantaneous longitudinal water temperature gradients may be generated in a stream reach that transitions from moorland to semi-natural forest in the absence of substantial groundwater inflows. Water did not cool as it flowed downstream. Instead, temperature gradients were generated by a combination of reduced rates of heating in the forested reach and advection of cooler (overnight and early morning) water from the upstream moorland catchment.
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