Arid
DOI10.1016/j.jaridenv.2020.104120
A mechanistic investigation of the oasis effect in the Zhangye cropland in semiarid western China
Ruehr, Sophie1; Lee, Xuhui1; Smith, Ronald2; Li, Xin3; Xu, Ziwei4; Liu, Shaomin4; Yang, Xiaofan4; Zhou, Yanzhao3
Corresponding AuthorRuehr, Sophie
JournalJOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
Year Published2020
Volume176
Abstract in English

Providing mechanistic explanations for oasis cold island effect trends expands current understanding of how land use change affects local climate in semi-arid regions globally. Data from Zhangye, Gansu, China in 2013 were used to evaluate intrinsic biophysical mechanism (IBPM) theory's ability to model the oasis effect. The land-surface temperature oasis effect is observed most intensely in summer afternoon (average difference -12.66 +/- 6.6 K at 13:30 between oasis and desert sites). Observed land-surface temperature oasis effects result from differences in surface albedo, Bowen ratio, soil heat flux and air temperature. The Bowen ratio change is the strongest predictor of land-surface temperature oasis effect, with a nearly 1:1 relationship to the observed land-surface oasis effect in summer (R-2 = 0.6). The IBPM theory accurately predicts oasis effects for 66% of summer daylight hours, with an average RSME of 4.72 K. Correlation analysis is performed to evaluate the impacts of meteorological conditions on observed oasis effects, showing that higher windspeed and greater atmospheric clarity produce stronger land-surface temperature oasis effects. In summer, this relationship is strongest, with an R-2 value of 0.65 and RSME of 3.77. This research has implications for evaluating temperature impacts of land use change in semi-arid regions globally.


Keyword in EnglishOasis-desert system Energy balance Intrinsic biophysical mechanism (IBPM) Semi-arid region
SubtypeArticle
Language英语
CountryUSA ; Peoples R China
Indexed BySCI-E
WOS IDWOS:000517850300006
WOS KeywordENERGY-BALANCE CLOSURE ; SURFACE-TEMPERATURE ; LAND-COVER ; CLIMATE ; IMPACTS ; ISLAND ; BASIN ; SEA
WOS SubjectEcology ; Environmental Sciences
WOS Research AreaEnvironmental Sciences & Ecology
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/314884
Affiliation1.Yale Univ, Sch Forestry & Environm Studies, New Haven, CT 06511 USA;
2.Yale Univ, Dept Geol & Geophys, New Haven, CT 06520 USA;
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China;
4.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Ruehr, Sophie,Lee, Xuhui,Smith, Ronald,et al. A mechanistic investigation of the oasis effect in the Zhangye cropland in semiarid western China[J],2020,176.
APA Ruehr, Sophie.,Lee, Xuhui.,Smith, Ronald.,Li, Xin.,Xu, Ziwei.,...&Zhou, Yanzhao.(2020).A mechanistic investigation of the oasis effect in the Zhangye cropland in semiarid western China.JOURNAL OF ARID ENVIRONMENTS,176.
MLA Ruehr, Sophie,et al."A mechanistic investigation of the oasis effect in the Zhangye cropland in semiarid western China".JOURNAL OF ARID ENVIRONMENTS 176(2020).
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