Local and Regional Scale Evaluation of the Integrated Urban Land Model by Comparing with the Common Land Model

Land surface evaporation is not only an important parameter in natural land surface modeling, but a crucial important parameter in urban hydrology modeling. A whole-layer soil evaporation scheme was developed in the integrated urban land model (IUM) to improve the soil evaporation simulation. The im...

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Main Authors: Chunlei Meng, Wenlong Zhang
Format: Article
Language:English
Published: Hindawi Limited 2019-01-01
Series:Advances in Meteorology
Online Access:http://dx.doi.org/10.1155/2019/4072497
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spelling doaj-ab293fa106584a4bb440445fa95063732020-11-24T22:44:12ZengHindawi LimitedAdvances in Meteorology1687-93091687-93172019-01-01201910.1155/2019/40724974072497Local and Regional Scale Evaluation of the Integrated Urban Land Model by Comparing with the Common Land ModelChunlei Meng0Wenlong Zhang1Institute of Urban Meteorology, China Meteorological Administration, 100089 Beijing, ChinaInstitute of Urban Meteorology, China Meteorological Administration, 100089 Beijing, ChinaLand surface evaporation is not only an important parameter in natural land surface modeling, but a crucial important parameter in urban hydrology modeling. A whole-layer soil evaporation scheme was developed in the integrated urban land model (IUM) to improve the soil evaporation simulation. The impervious surface evaporation (ISE) was used as a component of urban water balance equation. In this paper, the integrated urban land model was validated at one desert site and six urban road sites to emphasize the improvement in the evaporation simulations for arid and urban areas. A sensitivity analysis was implemented in seven basins to expand the utility of the whole layer soil evaporation scheme. For the urban road sites, the validation results indicate that imperious surface evaporation (ISE) plays a crucial role in road surface temperature (RST) simulations on rainy days. For the desert site, the validation results show that the inner layer evaporation is very important in arid regions. For the basins, the analysis results indicate that the relative monthly mean differences in the evapotranspiration (ET) between the simulations with (IUM) and without (Common Land Model (CoLM)) considering the inner layer evaporation range from −8% to 8%, which is proportional to the degree of dryness. In arid areas, especially deserts, the inner layer soil evaporation could not be neglected.http://dx.doi.org/10.1155/2019/4072497
collection DOAJ
language English
format Article
sources DOAJ
author Chunlei Meng
Wenlong Zhang
spellingShingle Chunlei Meng
Wenlong Zhang
Local and Regional Scale Evaluation of the Integrated Urban Land Model by Comparing with the Common Land Model
Advances in Meteorology
author_facet Chunlei Meng
Wenlong Zhang
author_sort Chunlei Meng
title Local and Regional Scale Evaluation of the Integrated Urban Land Model by Comparing with the Common Land Model
title_short Local and Regional Scale Evaluation of the Integrated Urban Land Model by Comparing with the Common Land Model
title_full Local and Regional Scale Evaluation of the Integrated Urban Land Model by Comparing with the Common Land Model
title_fullStr Local and Regional Scale Evaluation of the Integrated Urban Land Model by Comparing with the Common Land Model
title_full_unstemmed Local and Regional Scale Evaluation of the Integrated Urban Land Model by Comparing with the Common Land Model
title_sort local and regional scale evaluation of the integrated urban land model by comparing with the common land model
publisher Hindawi Limited
series Advances in Meteorology
issn 1687-9309
1687-9317
publishDate 2019-01-01
description Land surface evaporation is not only an important parameter in natural land surface modeling, but a crucial important parameter in urban hydrology modeling. A whole-layer soil evaporation scheme was developed in the integrated urban land model (IUM) to improve the soil evaporation simulation. The impervious surface evaporation (ISE) was used as a component of urban water balance equation. In this paper, the integrated urban land model was validated at one desert site and six urban road sites to emphasize the improvement in the evaporation simulations for arid and urban areas. A sensitivity analysis was implemented in seven basins to expand the utility of the whole layer soil evaporation scheme. For the urban road sites, the validation results indicate that imperious surface evaporation (ISE) plays a crucial role in road surface temperature (RST) simulations on rainy days. For the desert site, the validation results show that the inner layer evaporation is very important in arid regions. For the basins, the analysis results indicate that the relative monthly mean differences in the evapotranspiration (ET) between the simulations with (IUM) and without (Common Land Model (CoLM)) considering the inner layer evaporation range from −8% to 8%, which is proportional to the degree of dryness. In arid areas, especially deserts, the inner layer soil evaporation could not be neglected.
url http://dx.doi.org/10.1155/2019/4072497
work_keys_str_mv AT chunleimeng localandregionalscaleevaluationoftheintegratedurbanlandmodelbycomparingwiththecommonlandmodel
AT wenlongzhang localandregionalscaleevaluationoftheintegratedurbanlandmodelbycomparingwiththecommonlandmodel
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