Biomedical Engineering Reference
In-Depth Information
Fig. 10
LST range during
August
north direction from the central plateau during May, which would cause convec-
tive flow of low intensity in both south and northerly direction.
Conclusion
The ETM+ thermal band derived surface temperature provides more detailed and
accurate temperature variation at microscale. Land surface temperature varies
significantly with land cover types and vegetation density over the seasons. Water
body consistently shows lowest brightness temperature and barren/salt affected
area the highest due to low thermal inertia. During August, thermal character-
ization of some of the land cover class viz., fallow, steppe land, eroded land,
barren, sandy, salt affected and built-up land becomes difficult due to considerable
intermixing. However, the intermixing is less in May. In general, the LST follow
the decreasing trend with vegetation density in the vegetated areas which is not so
in barren areas. The shift of heat island is evident from central to southern part of
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