Comparación de métodos de kriging multivariante para la estimación espacial de la temperatura del aire

Estudios Geográficos

Roberto Hernández Varela¹ 

[1] Dpto. Geografía. Universidad del País Vasco

关键词: geoestadística;    semivariograma;    kriging;    temperatura;    topografía;    corregionalización;    géostatistique;    demi-variogramme;    krigeage;    température;    topographie;    corégionalisation;   

DOI  :  

学科分类：自然科学（综合）

来源: Estudios Geograficos

【 摘 要 】

In this paper three geostatistical algorithms are developed to incorporate exhaustive auxiliar information for the estimation of a primary attribute :kriging with varying local means and kriging with external drift , that use secondary data in order to characterize the primary spatial trend; andcollocated cokriging , that explicitly account for the spatial cross-correlation between both attributes.The different methods are tested by means of air temperature data sets from the automatic network of the Meteorological Basque Service, incorporating elevation as explicative variable.Cross validation is used to compare the estimation performances. The main conclusion is that the application of multivariate geostatistical methods can improve the effectiveness of meteorological maps, even when relationship between temperature and elevation weakens.

【 授权许可】

Unknown