干旱区生态环境知识资源中心(Arid): A Four-Parameter Model for Estimating Diurnal Temperature Cycle From MODIS Land Surface Temperature Product

Arid

DOI	10.1029/2020JD033855
	A Four-Parameter Model for Estimating Diurnal Temperature Cycle From MODIS Land Surface Temperature Product
	Lu, L.; Zhou, X. M.
通讯作者	Zhou, XM (corresponding author), Lanzhou Univ Technol, Sch Civil Engn, Lanzhou, Peoples R China.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2021
卷号	126 期号:8
英文摘要	Land surface diurnal temperature cycle (LSDTC) is an important element in climate system. Diurnal temperature cycle (DTC) models are potential for deriving diurnal variation of land surface temperature (LST) over extended regions from satellite observations. To estimate the LSDTC at high spatial resolution from clear-sky Moderate Resolution Imaging Spectrometer (MODIS) data, this study reduced the parameter number of a five-parameter DTC model to only four by fitting the time of maximum temperature as a function of normalized differential vegetation index (NDVI), elevation and latitude. Using the ground-based LSTs, the proposed four-parameter DTC (FPD) model was evaluated for 48 and 4 available LST observations per day. The results showed that the root mean square errors (RMSEs) were 2.08 K, 0.88 K, 1.14 K, 1.31 K, 2.27 K, and 1.12 K for grassland, cropland, swamp meadow, desert steppe, desert shrub, and sand desert, respectively, for 48 observations. Comparatively, RMSEs for four observations corresponding to the MODIS overpass times were increased by less than 1 K, except for swamp meadow with an elevation greater than 3,500 m that the error was increased by 1.5 K. Applying the FPD model to MODIS LST product showed that the model could capture the variation of LSTs during a day, and the accuracy of the modeled LSTs depended on the accuracy of MODIS LST product. Generally, the proposed FPD model is simple and easy to be applied to MODIS four LSTs per day under clear skies to acquire LSDTC over extended regions with high spatial resolution. Key Points The time of maximum temperature in the five-parameter diurnal temperature cycle model is parameterized A four-parameter diurnal temperature cycle model is developed, and error of the predicted temperature versus the field data is less than 3 K
英文关键词	diurnal temperature cycle four-parameter model land surface temperature MODIS
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000664863900022
WOS关键词	POLAR ORBITING SATELLITES ; BRIGHTNESS TEMPERATURES ; ASTER TEMPERATURE ; STANDARD PRODUCTS ; ARID AREA ; IN-SITU ; VALIDATION ; PARAMETERS ; INTERPOLATION ; GENERATION
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350834
作者单位	[Lu, L.] Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ, Coll Earth & Environm Sci, Lanzhou, Peoples R China; [Zhou, X. M.] Lanzhou Univ Technol, Sch Civil Engn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Lu, L.,Zhou, X. M.. A Four-Parameter Model for Estimating Diurnal Temperature Cycle From MODIS Land Surface Temperature Product[J]. 兰州大学,2021,126(8).
APA	Lu, L.,&Zhou, X. M..(2021).A Four-Parameter Model for Estimating Diurnal Temperature Cycle From MODIS Land Surface Temperature Product.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(8).
MLA	Lu, L.,et al."A Four-Parameter Model for Estimating Diurnal Temperature Cycle From MODIS Land Surface Temperature Product".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.8(2021).