Model:River Temperature Model

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River Temperature Model

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Summary Contact Technical specs In/Output Process Testing Other Component info Also known as River Temperature Model type Single Model part of larger framework permafrost toolbox Note on status model Date note status model Incorporated models or components: Spatial dimensions 1D, 1.5D Spatial extent Reach-Scale Model domain Terrestrial, Hydrology One-line model description River Temperature Model based on heat balance approach Extended model description The river water temperature model is designed to be applied in Arctic rivers. Heat energy transfers considered include surface net solar radiation, net longwave radiation, latent heat due to evaporation and condensation, convective heat and the riverbed heat flux. The model is explicitly designed to interact with a permafrost channelbed and frozen conditions through seasonal cycles. In addition to the heat budget, river discharge, or stage, drives the model. Keywords: permafrost, river discharge, river, Name Irina Overeem Type of contact Project manager Institute / Organization University of Colorado Postal address 1 4001 Discovery DR Postal address 2 Town / City Boulder Postal code 80303 State Colorado Country United States Email address irina.overeem@colorado.edu Phone Fax Name Lei Zheng Type of contact Model developer Institute / Organization Wuhan University Postal address 1 Postal address 2 Town / City Postal code State Country China Email address zhenglei007@whu.edu.cn Phone Fax Supported platforms Mac OS Other platform Programming language Python, Matlab Other program language Code optimized Single Processor Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 2018 Does model development still take place? Yes If above answer is no, provide end year model development Code development status Active When did you indicate the 'code development status'? 2020 Model availability As code Source code availability (Or provide future intension) Through web repository Source web address https://github.com/permamodel/River-temp-python Source csdms web address Program license type GPL v3 Program license type other Memory requirements Typical run time Describe input parameters climatology Input format ASCII Other input format mfile.txt Describe output parameters daily river temperature Output format ASCII Other output format Pre-processing software needed? No Describe pre-processing software Post-processing software needed? No Describe post-processing software Visualization software needed? No If above answer is yes Other visualization software Describe processes represented by the model [[Describe processes::River temp is a one-dimensional heat-balance model to simulate water temperature driven by atmospheric and hydrologic observations. Heat fluxes considered in the model include: net surface shortwave solar radiation, net longwave radiation, latent heat due to evaporation and condensation, convective heat, and riverbed heat flux following [Hebert et al., 2011].]] Describe key physical parameters and equations [[Describe key physical parameters::Surface net solar radiation at the water surface is expressed as the direct solar irradiance penetrating the water surface, i.e., the difference between incoming solar radiation and reflected solar radiation, taking into account albedo of the river water. Longwave radiation includes the radiation emitted by the atmosphere, water surface, and vegetation. We assume the vegetation canopy effect is negligible for the Arctic river floodplains. Net longwave radiation at the water surface is then the difference between atmospheric downward longwave radiation and the longwave radiation emitted from the water surface. Latent heat Hl contributed by evaporation or condensation at the air-water interface can be expressed by the following equation [Hebert et al., 2011]. The heat flux between river water and the riverbed is potentially a significant control on water temperature, especially in shallow rivers, and perhaps even more so in rivers in permafrost terrain. Riverbed heat flux consists of the amount of solar radiation absorbed by the bed material and the thermal conduction into the riverbed [Webb & Zhang, 1997]]] Describe length scale and resolution constraints Model is 1D, we have used it over a x-section of a floodplain with varying flood inundation depth and durations. Describe time scale and resolution constraints Daily timesteps Describe any numerical limitations and issues Describe available calibration data sets Tested against river temperature observations of the Kuparuk river on the North Slope of Alaska (described in Zheng et al., 2019). Upload calibration data sets if available: Describe available test data sets water temperature measurements over summer seasons of 2014-2016 Upload test data sets if available: Describe ideal data for testing Do you have current or future plans for collaborating with other researchers? We intent to apply this model to the Canning River, AK with collaborators of the USGS/Alaska Science Center. Is there a manual available? No Upload manual if available: Model website if any Model forum / discussion board Comments Zheng, L., Overeem, I., Wang, K., Clow, G., (2019). Changing Arctic River Dynamics Cause Localized Permafrost Thaw, Journal of Geophysical Research – Earth Surface. https://doi.org/10.1029/2019JF005060. This part will be filled out by CSDMS staff OpenMI compliant BMI compliant No but possible WMT component No not possible PyMT component No but possible Is this a data component DOI model For model version Year version submitted Link to file Can be coupled with: CVPM,

Model info Authors Irina Overeem Zheng Source code Go to external source code site Model citations Nr. of publications: -- Total citations: 0 h-index: --"--" is not a number. m-quotient: 0 QR-code Link to this page Other models by author AquaTellUs CMIP Frost Model Kudryavtsev Model River Temperature Model

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Featured publication(s)	Year	Model described	Type of Reference	Citations
Zheng, Lei; Overeem, Irina; Wang, Kang; Clow, Gary D.; 2019. Changing Arctic River Dynamics Cause Localized Permafrost Thaw. Journal of Geophysical Research: Earth Surface, 124, 2324–2344. 10.1029/2019JF005060 (View/edit entry)	2019	CVPM River Temperature Model	Related theory	17
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