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Dynamical Downscaling of Climate Change over the Hawaiian Islands

Zhang, Chunxi and Yuqing, Wang and Kevin, Hamilton and Lauer, Axel (2015) Dynamical Downscaling of Climate Change over the Hawaiian Islands. 2015 AGU Fall Meeting, 14.-18. Dez. 2015, San Francisco, USA.

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Abstract

The pseudo-global-warming (PGW) method was applied to the Hawaii Regional Climate Model (HRCM) to dynamically downscale the projected climate in the late 21st century over the Hawaiian Islands. The initial and boundary conditions were adopted from MERRA reanalysis and NOAA SST data for the present-day simulations. The global warming increments constructed from the CMIP3 multi-model ensemble mean were added to the reanalysis and SST data to perform the future climate simulations. We found that the Hawaiian Islands are vulnerable to global warming effects and the changes are diverse due to the varied topography. The windward side will have more clouds and receive more rainfall. The increase of the moisture in the boundary layer makes the major contribution. On the contrary, the leeward side will have less clouds and rainfall. The clouds and rain can slightly slow down the warming trend over the windward side. The temperature increases almost linearly with the terrain height. Cloud base and top heights will slightly decline in response to the slightly lower trade wind inversion base height, while the trade wind occurrence frequency will increase by about 8% in the future. More extreme rainfall events will occur in the warming climate over the Hawaiian Islands. And the snow cover on the top of Mauna Kea and Mauna Loa will nearly disappear in the future winter.

Item URL in elib:https://elib.dlr.de/102046/
Document Type:Conference or Workshop Item (Poster)
Title:Dynamical Downscaling of Climate Change over the Hawaiian Islands
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zhang, ChunxiInternational Pacific Research Center, University of HawaiiUNSPECIFIED
Yuqing, WangInternational Pacific Research Center, University of HawaiiUNSPECIFIED
Kevin, HamiltonInternational Pacific Research Center, University of HawaiiUNSPECIFIED
Lauer, AxelDLR, IPAUNSPECIFIED
Date:17 December 2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:high-resolution climate modeling
Event Title:2015 AGU Fall Meeting
Event Location:San Francisco, USA
Event Type:international Conference
Event Dates:14.-18. Dez. 2015
Organizer:American Geophysical Union
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Earth System Modelling
Deposited By: Lauer, Axel
Deposited On:15 Jan 2016 17:24
Last Modified:10 May 2016 23:41

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