A High-Resolution Global Climate Simulation

Duffy, P B

Lawrence Livermore National Laboratory

关键词: Management;    Water Resources;    Mountains;    58 Geosciences;    Sales;   

DOI  :  10.2172/15013383
RP-ID  :  UCRL-ID-146897
RP-ID  :  W-7405-ENG-48
RP-ID  :  15013383

美国|英语

来源: UNT Digital Library

【 摘 要 】

A major factor limiting the quality and usefulness of global climate models is the coarse spatial resolution of these models. Global climate models today are typically run at resolutions of {approx}300 km (or even coarser) meaning that the smallest features represented are 300 km across. As Figure 1 shows, this resolution does not allow adequate representation of small or even large topographic features (e.g. the Sierra Nevada mountains). As a result of this and other problems, coarse-resolution global models do not come close to accurately simulating climate on regional spatial scales (e.g. within California). Results on continental and larger sales are much more realistic. An important consequence of this inability to simulate regional climate is that global climate model results cannot be used as the basis of assessments of potential societal impacts of climate change (e.g. effects on agriculture in the Central Valley, on management of water resources, etc.).