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Comparison of spatial interpolation techniques to generate high-resolution climate surfaces for Nigeria
Arowolo, Aisha Olushola1,2,3; Bhowmik, Avit Kumar4; Qi, Wei1; Deng, Xiangzheng1
2017-08-01
Source PublicationINTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN0899-8418
Volume37Pages:179-192
Corresponding AuthorDeng, Xiangzheng(dengxz.ccap@igsnrr.ac.cn)
AbstractClimate datagaps are a major challenge for understanding the impacts of climate change on ecosystems, particularly in highly climate vulnerable countries such as Nigeria. The generation of gridded climate data sets in the form of interpolated surfaces may help to fill climate datagaps and in turns enable climate change impact assessments. This article generates climate surfaces of monthly total precipitation and minimum and maximum temperatures for Nigeria at 0.001 degrees spatial resolution by comparing two spatial interpolation techniques, i.e. kriging with external drifts and thin plate splines. Climate data from 43 meteorological stations covering the period of 1960-2012 were used to generate climate surfaces fitting the longitude, latitude, elevation and distance to coastline of the stations as independent variables. Three model error statistics, i.e. root mean square error (RMSE), Nash-Sutcliffe efficiency (NSE) and index of agreement (d), were used to evaluate and compare the performances of interpolation techniques. The second-order and third-order partial thin plate splines were identified as the optimal models for generating precipitation, and minimum and maximum temperatures surfaces, respectively. The best-fit surfaces yielded an average RMSE, NSE and d of 14.98, 0.87 and 0.97 for precipitation, 0.42, 0.91 and 0.98 for minimum temperature and 0.52, 0.89 and 0.97 for maximum temperature. Our high-resolution climate surfaces are freely available from an online repository and widely applicable for climate change analysis as well as for biological, forestry and agricultural studies in Nigeria.
Keywordclimate surfaces thin plate splines kriging interpolation temperature precipitation Nigeria
DOI10.1002/joc.4990
WOS KeywordGLOBAL LAND AREAS ; DAILY RAINFALL ; DATA SET ; SPLINES ; MODELS ; PRECIPITATION ; CANADA ; TEMPERATURE ; ALTIPLANO ; MAXIMUM
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFA0602500] ; Bureau of International Cooperation, Chinese Academy of Sciences[131A11KYSB20130023] ; China Scholarship Council[2015GXYG55]
Funding OrganizationNational Key Research and Development Program of China ; Bureau of International Cooperation, Chinese Academy of Sciences ; China Scholarship Council
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000417298600013
PublisherWILEY
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/60793
Collection中国科学院地理科学与资源研究所
Corresponding AuthorDeng, Xiangzheng
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Chinese Agr Policy, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Fed Univ Agr, Dept Agr Econ & Farm Management, Abeokuta, Ogun State, Nigeria
4.Stockholm Univ, Stockholm Resilience Ctr, Stockholm, Sweden
Recommended Citation
GB/T 7714
Arowolo, Aisha Olushola,Bhowmik, Avit Kumar,Qi, Wei,et al. Comparison of spatial interpolation techniques to generate high-resolution climate surfaces for Nigeria[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37:179-192.
APA Arowolo, Aisha Olushola,Bhowmik, Avit Kumar,Qi, Wei,&Deng, Xiangzheng.(2017).Comparison of spatial interpolation techniques to generate high-resolution climate surfaces for Nigeria.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37,179-192.
MLA Arowolo, Aisha Olushola,et al."Comparison of spatial interpolation techniques to generate high-resolution climate surfaces for Nigeria".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37(2017):179-192.
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