NDLI: Assessment of gridded precipitation and air temperature products for the State of Acre, southwestern Amazonia, Brazil

Content Provider	Springer Nature Link
Author	Tostes, J. O. Lyra, G. B. Oliveira Júnior, J. F. Francelino, M. R.
Copyright Year	2017
Abstract	This paper evaluated the precision and accuracy of two gridded monthly precipitation products (P-GPCC/V6 from the Global Precipitation Climatology Centre and P-UDEL/V3.01 from the University of Delaware—UDEL) and two monthly air temperature products (T-GHCN/V2 from the Global Historical Climatology Network and T-UDEL/V3.01 from UDEL) for the State of Acre, in southwestern Amazonia, northern Brazil. As reference, we used monthly climate series of these elements from January 1971 to December 2000, recorded at five conventional weather stations (CWS) of the Instituto Nacional de Meteorologia (INMET). Data were compared by linear regression; the coefficient of determination (r $^{2}$); Willmott’s index of agreement (d); Camargo’s performance index (c); the root-mean-square error (RMSE); mean systematic error (MSE); and unsystematic error (MSE$_{u}$). Moreover, a trend analysis of the products at a seasonal and annual scale was performed. Regarding rainfall, it was found that GPCC as well as UDEL represents the mean and variability of rainfall throughout the series, but the performance of the product of GPCC was more homogenous and generally applicable for all stations. In relation to the air temperature standards, the precision of GHCN and UDEL was low, but the accuracy was moderate, according to statistical methods.
Starting Page	1
Ending Page	18
Page Count	18
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	76
Issue Number	4
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-02-14
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Gridded products Precision Accuracy Climate models Statistical methods Meteorological systems Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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