Correlacion Entre La Temperatura Superficial Del Sensor Modis Y La Temperatura Media Del Aire En El Departamento De La Guajira, Colombia
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Date
2021-07-02
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Universidad Antonio Nariño
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http://purl.org/coar/resource_type/c_7a1f
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Abstract
Low density of meteorological stations in La Guajira state causes a deficit of up-to-date and highprecision climate information in most of the remote areas on the region. Data obtained from remote
sensors, due to their spatial continuity, can help to improve estimations of this climate information.
Therefore, the objective of this document is to determine and evaluate the correlation that exists
between maximum and minimum air temperature and daytime and nighttime land surface
temperature of MODIS sensor in La Guajira state. In order to do this, stations and sensor data
available in the region were extracted in the period between January 1, 2015 and December 31,
2019. From these data, linear regressions were performed in each station and correlation of the
information was determined. The results yielded correlations greater than 0.50 between Tamax and
daytime surface temperature. For Tamin measurements and nighttime surface temperature, were
obtained correlations less than 0.60 in almost all stations. Mixed data showed very good
correlations, obtaining values higher than 0.85. These results lead to the conclusion that the
determination of the maximum and minimum air temperature from land surface temperature of
MODIS sensor has not a good fit with in situ measurements
item.page.subject.keyword
item.page.coverage.spatial
La Guajira (Colombia)