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Regional Climate Modeling Studies on the Combined Effects of Global Warming and Urbanization in China.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Regional Climate Modeling Studies on the Combined Effects of Global Warming and Urbanization in China./
Author:	Thanh, Nguyen-Xuan.
Description:	1 online resource (165 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-09, Section: A.
Contained By:	Dissertations Abstracts International84-09A.
Subject:	Land area. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30276675click for full text (PQDT)
ISBN:	9798374421415

Regional Climate Modeling Studies on the Combined Effects of Global Warming and Urbanization in China.
Thanh, Nguyen-Xuan.

Regional Climate Modeling Studies on the Combined Effects of Global Warming and Urbanization in China. - 1 online resource (165 pages)

Source: Dissertations Abstracts International, Volume: 84-09, Section: A.

Thesis (Ph.D.)--Hong Kong University of Science and Technology (Hong Kong), 2022.

Includes bibliographical references

Both greenhouse gas (GHG) emissions and urban expansion are regarded as importantcontributors to accelerating warming trends. Southeastern China, where Pearl River Delta(PRD) and Yangtze River Delta (YRD) are nestled, is a representative region with mountingconcerns related to anthropogenic warming and the rapid pace of urbanization. Since theseplaces have already experienced thermal discomfort at dangerous levels, it is not farfetched toinfer that further warming will increase the heat stress close to the lethal level of humanadaptability. However, most climate projections are yet to adequately consider future urbangrowth and their synergistic effects under global warming, leading to a potentialunderestimation of the risk of heat-related extremes. This study adopts the latest version of theRegional Climate Model (RegCM) for dynamical downscaling to better resolve geographicallydiverse climate features and then address the aforementioned limitations. Its performance has been improved by optimizing the configurations over target domains and incorporating a newurban module. First, the double-nested modeling system is developed focusing on the PRD andYRD regions, and its capability to capture region-specific climate characteristics is intensivelyevaluated in order to assess the effects of convection-permitting and non-hydrostatic dynamicalcore. Then, the land surface parameterization in RegCM is improved by incorporating abuilding energy model to prognostically account for the interior building temperatures, therebyenhancing the estimation of released anthropogenic heat fluxes into the urban canopy. Finally,the multiple global climate projections forced by both medium as well as high levels emissionscenarios (i.e., RCP4.5 and RCP8.5) are dynamically downscaled using RegCM double-nestedsystem with the improved urban parameterization by prescribing future urban expansiongenerated from different Shared Socio-Economic Pathways (i.e., SSP2 and SSP5). Thecomparative analysis of downscaled results over the PRD and YRD regions will providevaluable insights into the dominance of varied physical processes acting on the targeteddomains as well as the severity of the negative impacts of future warming on human thermalcomfort.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798374421415Subjects--Topical Terms:

3688547
Land area.
Index Terms--Genre/Form:

542853
Electronic books.

Regional Climate Modeling Studies on the Combined Effects of Global Warming and Urbanization in China.
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100 1 $a Thanh, Nguyen-Xuan. $3 3705077
245 1 0 $a Regional Climate Modeling Studies on the Combined Effects of Global Warming and Urbanization in China.
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300 $a 1 online resource (165 pages)
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500 $a Source: Dissertations Abstracts International, Volume: 84-09, Section: A.
500 $a Advisor: Im, Eun Soon;Fung, Jimmy C. H.
502 $a Thesis (Ph.D.)--Hong Kong University of Science and Technology (Hong Kong), 2022.
504 $a Includes bibliographical references
520 $a Both greenhouse gas (GHG) emissions and urban expansion are regarded as importantcontributors to accelerating warming trends. Southeastern China, where Pearl River Delta(PRD) and Yangtze River Delta (YRD) are nestled, is a representative region with mountingconcerns related to anthropogenic warming and the rapid pace of urbanization. Since theseplaces have already experienced thermal discomfort at dangerous levels, it is not farfetched toinfer that further warming will increase the heat stress close to the lethal level of humanadaptability. However, most climate projections are yet to adequately consider future urbangrowth and their synergistic effects under global warming, leading to a potentialunderestimation of the risk of heat-related extremes. This study adopts the latest version of theRegional Climate Model (RegCM) for dynamical downscaling to better resolve geographicallydiverse climate features and then address the aforementioned limitations. Its performance has been improved by optimizing the configurations over target domains and incorporating a newurban module. First, the double-nested modeling system is developed focusing on the PRD andYRD regions, and its capability to capture region-specific climate characteristics is intensivelyevaluated in order to assess the effects of convection-permitting and non-hydrostatic dynamicalcore. Then, the land surface parameterization in RegCM is improved by incorporating abuilding energy model to prognostically account for the interior building temperatures, therebyenhancing the estimation of released anthropogenic heat fluxes into the urban canopy. Finally,the multiple global climate projections forced by both medium as well as high levels emissionscenarios (i.e., RCP4.5 and RCP8.5) are dynamically downscaled using RegCM double-nestedsystem with the improved urban parameterization by prescribing future urban expansiongenerated from different Shared Socio-Economic Pathways (i.e., SSP2 and SSP5). Thecomparative analysis of downscaled results over the PRD and YRD regions will providevaluable insights into the dominance of varied physical processes acting on the targeteddomains as well as the severity of the negative impacts of future warming on human thermalcomfort.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Land area. $3 3688547
650 4 $a Vegetation. $3 3560047
650 4 $a Precipitation. $3 3680799
650 4 $a Humidity. $3 3559498
650 4 $a Greenhouse gases. $3 797971
650 4 $a Topography. $3 3561794
650 4 $a Altitude. $3 746362
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650 4 $a Global warming. $3 535463
650 4 $a Rural areas. $3 3560074
650 4 $a Urban areas. $3 3546012
650 4 $a Boundary conditions. $3 3560411
650 4 $a Urban heat islands. $3 3705078
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650 4 $a Radiation. $3 673904
650 4 $a Climate change. $2 bicssc $3 2079509
650 4 $a General circulation models. $3 3694484
650 4 $a Industrial plant emissions. $3 3564812
650 4 $a Urbanization. $3 535373
650 4 $a Cities. $3 3544022
650 4 $a Asian studies. $3 1571829
650 4 $a Atmospheric sciences. $3 3168354
650 4 $a Geography. $3 524010
650 4 $a Mathematics. $3 515831
650 4 $a Physical geography. $3 516662
650 4 $a Urban planning. $3 2122922
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710 2 $a Hong Kong University of Science and Technology (Hong Kong). $3 1022235
773 0 $t Dissertations Abstracts International $g 84-09A.
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