Surface energy balance and its closure in arid grassland ecosystems: A case study over Thar desert
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Title |
Surface energy balance and its closure in arid grassland ecosystems: A case study over Thar desert
Not Available |
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Creator |
P. RAJA
B.K. BHATTACHARYA NILENDU SINGH NK Sinha J.P. SINGH C.B. PANDEY, J.S. PARIHAR M.M. ROY |
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Subject |
Micrometeorology
grassland Thar desert |
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Description |
Not Available
A complete annual cycle of micrometeorological measurements were carried out to characterize the dynamics of radiation and energy balance over a grassland ecosystem at Central Arid Zone Research Institute experimental area at Chandan, Jaisalmer, India from INSAT-linked ISRO-AMS (Agro-Met Station). The daytime average dekadal latent flux for actual evapotranspiration (AET) showed substantially lower magnitude (15-115 Wm-2) (AET: 0.3 mmd-1 to 2.5 mmd-1) with prominent peak coincident to south-west monsoon and peak growth stage. Sensible heat fluxes showed a large variation from 54 to 340 Wm-2 with peak during summer and minimum during winter and monsoon seasons. More than 70% energy balance closure (EBC) was observed. The non-closure of energy balance periods were characterized by strong local advections in summer. The daytime average net radiation showed bimodal behavior (195 to 420 Wm-2) with primary peak in spring-summer and secondary peak coincident to the start of the withdrawal of south-west monsoon. Significant complementary exponential relation (Y=0.045 e12.13X, R2 = 0.65) was found between dekadal albedo and Bowen ratio which was generally high (1.5 to 5.3) with intermittent dips (0.3 to 1.3) coincident to wet spells. Similarly, the dekadal albedo showed a higher magnitude (0.15 to 0.39), recording the highest (0.39) in the month of April and the lowest (0.15) in the month of September post-monsoon period when green grass growth was maximum. Not Available |
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Date |
2021-07-16T09:28:55Z
2021-07-16T09:28:55Z 2013-03-31 |
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Type |
Research Paper
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Identifier |
Raja, P., Bhattacharya, B. K., Singh, N., Sinha, N. K., Singh, J. P., Pandey, C. B., ... & Roy, M. M. (2013). Surface energy balance and its closure in arid grassland ecosystem: a case study over Thar Desert. J Agrometeorol Spl, (1), 94-99.
0972-1665 http://krishi.icar.gov.in/jspui/handle/123456789/48451 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Association of Agrometeorologists
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