Sokoine University of Agriculture

Urban Climate Analysis with Remote Sensing and Climate Observations: A Case of Morogoro Municipality in Tanzania

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dc.contributor.author Ernest, S.
dc.contributor.author Nduganda, A. R.
dc.contributor.author Kashaigili, J. J.
dc.date.accessioned 2018-07-05T14:41:33Z
dc.date.available 2018-07-05T14:41:33Z
dc.date.issued 2017-06-15
dc.identifier.citation Ernest, S., Nduganda, A.R. and Kashaigili, J.J. (2017) Urban Climate Analysis with Remote Sensing and Climate Observations: A Case of Morogoro Municipality in Tanzania. Advances in Remote Sensing, 6, 120-131. https://doi.org/10.4236/ars.2017.62009 en_US
dc.identifier.issn 2169-2688
dc.identifier.uri http://www.suaire.sua.ac.tz/handle/123456789/2491
dc.description Advances in Remote Sensing, 2917; 6: 120-131 en_US
dc.description.abstract Rapid urbanization is threatening sustainable development of urban areas in Tanzania. Among the risks of rapid urbanization are Urban Heat Island (UHI) effect and climate change. While this has been noted, it is not known to what extent these risks are being realized in fast growing urban areas like Morogoro and other areas of similar geographic and climatic conditions. Therefore a study was conducted to assess the influence of urbanization on UHI and climate in Morogoro Municipality using remote sensing and climate data. Landsat imageries acquired in 1990, 2000 and 2015 were used to assess the change of impervious surface for the year 1990 to 2015 using a Classification and Regression Tree (CART). Radiant surface temperature and normalized difference vegetation index (NDVI) were derived from thermal band and reflectance bands respectively. Mann-Kendall test was used to analyze climate data for trends. Results revealed an increase of impervious surface (built up areas) from 9 km2 in 1990 to 48 km2 in 2000 and 82 km2 in 2015; which is associated with UHI. UHI was not apparent in 1990, but was apparent in 2000 and 2015 with the temperature rise of 1.08˚C and 1.22˚C respectively. A linear relationship between radiant surface temperature (TB) and percent Impervious Surface (ISA); and between TB and NDVI it revealed that NDVI is better indicator of variations in TB dynamics than percent ISA. Mann-Kendall test indicated a significant increasing trend in mean annual maximum temperature. The results imply that increasing ISA coupled with vegetation degradation has contributed to temperature rise and change. Consequently, Morogoro Municipality residents are likely to suffer heat stress due to rapid urbanization. It is recommended that education on the use of reflective surfaces should be given to the residents; and an effective master plan that protects vegetation should be in place. en_US
dc.language.iso en en_US
dc.subject Radiant Temperature en_US
dc.subject Impervious Surfaces en_US
dc.subject Urban Heat Island en_US
dc.subject Random Forest Algorithm en_US
dc.subject Mann-Kendall Test en_US
dc.title Urban Climate Analysis with Remote Sensing and Climate Observations: A Case of Morogoro Municipality in Tanzania en_US
dc.type Article en_US
dc.url DOI: 10.4236/ars.2017.62009 en_US


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