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Article: High-Resolution Land Surface Modeling of the Effect of Long-Term Urbanization on Hydrothermal Changes Over Beijing Metropolitan Area

TitleHigh-Resolution Land Surface Modeling of the Effect of Long-Term Urbanization on Hydrothermal Changes Over Beijing Metropolitan Area
Authors
Keywordsdomestic wastewater recharge
high-resolution modeling
impervious surface
land surface temperature
streamflow
urban
Issue Date2021
Citation
Journal of Geophysical Research: Atmospheres, 2021, v. 126, n. 18, article no. e2021JD034787 How to Cite?
AbstractThe impacts of urbanization on terrestrial thermal and hydrological changes should be considered for sustainable development of urban environment and economy. However, previous studies mainly focused on the impacts at short time scales, which is insufficient to provide the needed information. This study augmented the high-resolution Conjunctive Surface-Subsurface Process version 2 (CSSPv2) land model with an urban canopy model that incorporates domestic wastewater recharge (DWWR) and dynamical impervious surface area (ISA) to develop a new CSSPv2_Urban model and conducted 38-year simulations over the Beijing metropolitan area at 1 km resolution to quantify the urbanization impacts. Compared with CSSPv2, CSSPv2_Urban decreases the root-mean-square errors in surface latent/sensible heat fluxes, near-surface air temperature and land surface temperature by 15%–66%, increases Kling-Gupta efficiency for streamflow by 27%–34%, and reproduces the observed long-term trends of land surface temperature and streamflow. It also reduces the corresponding errors in the modern reanalysis products by up to 70%. The model sensitivity analyses showed that the urbanization over Beijing area contributed to 31% of the surface warming during 1979–2017 and kept the warming trend over the new development zone during 2000–2013 when global warming slowed down. Although the large fraction of ISA in the city center increased streamflow by generating more surface runoff, 39%–62% of the increasing trend of streamflow was caused by the increased DWWR. Our study highlights the importance of the urban heat island effect from a climatological perspective and suggests that the influences of urbanization on streamflow may be underestimated if ignoring DWWR.
Persistent Identifierhttp://hdl.handle.net/10722/329743
ISSN
2023 Impact Factor: 3.8
2023 SCImago Journal Rankings: 1.710
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorJi, Peng-
dc.contributor.authorYuan, Xing-
dc.contributor.authorLiang, Xin Zhong-
dc.contributor.authorJiao, Yang-
dc.contributor.authorZhou, Yuyu-
dc.contributor.authorLiu, Zan-
dc.date.accessioned2023-08-09T03:35:01Z-
dc.date.available2023-08-09T03:35:01Z-
dc.date.issued2021-
dc.identifier.citationJournal of Geophysical Research: Atmospheres, 2021, v. 126, n. 18, article no. e2021JD034787-
dc.identifier.issn2169-897X-
dc.identifier.urihttp://hdl.handle.net/10722/329743-
dc.description.abstractThe impacts of urbanization on terrestrial thermal and hydrological changes should be considered for sustainable development of urban environment and economy. However, previous studies mainly focused on the impacts at short time scales, which is insufficient to provide the needed information. This study augmented the high-resolution Conjunctive Surface-Subsurface Process version 2 (CSSPv2) land model with an urban canopy model that incorporates domestic wastewater recharge (DWWR) and dynamical impervious surface area (ISA) to develop a new CSSPv2_Urban model and conducted 38-year simulations over the Beijing metropolitan area at 1 km resolution to quantify the urbanization impacts. Compared with CSSPv2, CSSPv2_Urban decreases the root-mean-square errors in surface latent/sensible heat fluxes, near-surface air temperature and land surface temperature by 15%–66%, increases Kling-Gupta efficiency for streamflow by 27%–34%, and reproduces the observed long-term trends of land surface temperature and streamflow. It also reduces the corresponding errors in the modern reanalysis products by up to 70%. The model sensitivity analyses showed that the urbanization over Beijing area contributed to 31% of the surface warming during 1979–2017 and kept the warming trend over the new development zone during 2000–2013 when global warming slowed down. Although the large fraction of ISA in the city center increased streamflow by generating more surface runoff, 39%–62% of the increasing trend of streamflow was caused by the increased DWWR. Our study highlights the importance of the urban heat island effect from a climatological perspective and suggests that the influences of urbanization on streamflow may be underestimated if ignoring DWWR.-
dc.languageeng-
dc.relation.ispartofJournal of Geophysical Research: Atmospheres-
dc.subjectdomestic wastewater recharge-
dc.subjecthigh-resolution modeling-
dc.subjectimpervious surface-
dc.subjectland surface temperature-
dc.subjectstreamflow-
dc.subjecturban-
dc.titleHigh-Resolution Land Surface Modeling of the Effect of Long-Term Urbanization on Hydrothermal Changes Over Beijing Metropolitan Area-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1029/2021JD034787-
dc.identifier.scopuseid_2-s2.0-85115779340-
dc.identifier.volume126-
dc.identifier.issue18-
dc.identifier.spagearticle no. e2021JD034787-
dc.identifier.epagearticle no. e2021JD034787-
dc.identifier.eissn2169-8996-
dc.identifier.isiWOS:000702399300021-

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