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Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.40 [2011] >
IJRSP Vol.40(1) [February 2011] >
| Title: | Investigation of surface energy budget over a humid tropical site at Ile-Ife, Nigeria: A comparison of eddy covariance and Bowen ratio methods |
| Authors: | Oladosu, O R
Sunmonu, L A |
| Keywords: | Bowen Ratio
Eddy covariance
Surface energy budget
Ground heat flux
Solar radiation
Soil moisture |
| Issue Date: | Feb-2011 |
| Publisher: | NISCAIR-CSIR, India |
| PACS No.: | 92.60.Vb |
| Abstract: | Research grade-data for estimating surface energy budget is still scarce
for the humid tropical West African sub-region despite its vital importance in
development and validation of the numerical models both at regional and global
scales. The present paper examines the surface energy budget data collected
over a humid tropical site at Ile-Ife,
Nigeria (7.55oN,
4.56oE, 296 m) from eddy covariance (EC) and Bowen ratio (BR)
methods during February/March and July 2007. The two periods represent
transition from dry to wet and entirely wet season, respectively. The
differences in the partitioning of the fluxes by both methods were examined.
The mean closures were 92.21 and 80.72% for February/March and July,
respectively. The EC and BR were found to partition fluxes differently. The BR
estimation of sensible heat flux (HS) was consistently higher than
EC while the BR estimation of latent heat flux (HLE) was higher in
the morning hours before sunrise. At sunrise, however, the EC estimation HLE
was higher than that of BR.
The difference in net radiation (RN),
ground heat flux (HG),
and soil moisture by both methods were also reported. |
| Page(s): | 37-44 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Source: | IJRSP Vol.40(1) [February 2011]
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