Seasonal and Diurnal Variability of Albedo and Soil Moisture over Ranchi

1
Smita Dey
Smita Dey
2
Roshan Kumar
Roshan Kumar
1 Ranchi University

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Seasonal and Diurnal Variability of Albedo and Soil Moisture over Ranchi Banner
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Land surface shortwave albedo plays a central role in global and regional climate modeling. Remote sensing of surface properties and estimation of clear sky and surface albedo generally assumes that the albedo depends only on the solar zenith angle, which is verified as surface albedo decreases with increase of solar elevation angle (SAE), when SAE is greater than (value of angle=45deg.) it becomes constant. Fluctuations of soil moisture result in large variation in outgoing energy fluxes, and thus significant variation in near surface relative humidity and temperature. In this study analysis of radiation and other weather data collected from January 2009 to December 2009 at Ranchi in Jharkhand (85 30’E, 23 45’N,elev 652.272) are used to examines the diurnal and seasonal soil moisture variations with surface albedo and their relationship with soil moisture. The diurnal and seasonal soil moisture’s effect from rainfall is also discussed. From the analysis of monthly data indicate that surface albedo has inverse relation with soil moisture content. surface albedo, solar elevation angle, soil moisture.

Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

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Not applicable for this article.

Smita Dey. 2014. \u201cSeasonal and Diurnal Variability of Albedo and Soil Moisture over Ranchi\u201d. Global Journal of Computer Science and Technology - G: Interdisciplinary GJMBR-G Volume 14 (GJMBR Volume 14 Issue G1): .

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GJMBR Volume 14 Issue G1
Pg. 25- 31
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Crossref Journal DOI 10.17406/gjcst

Print ISSN 0975-4350

e-ISSN 0975-4172

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v1.2

Issue date

April 13, 2014

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English

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Land surface shortwave albedo plays a central role in global and regional climate modeling. Remote sensing of surface properties and estimation of clear sky and surface albedo generally assumes that the albedo depends only on the solar zenith angle, which is verified as surface albedo decreases with increase of solar elevation angle (SAE), when SAE is greater than (value of angle=45deg.) it becomes constant. Fluctuations of soil moisture result in large variation in outgoing energy fluxes, and thus significant variation in near surface relative humidity and temperature. In this study analysis of radiation and other weather data collected from January 2009 to December 2009 at Ranchi in Jharkhand (85 30’E, 23 45’N,elev 652.272) are used to examines the diurnal and seasonal soil moisture variations with surface albedo and their relationship with soil moisture. The diurnal and seasonal soil moisture’s effect from rainfall is also discussed. From the analysis of monthly data indicate that surface albedo has inverse relation with soil moisture content. surface albedo, solar elevation angle, soil moisture.

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Seasonal and Diurnal Variability of Albedo and Soil Moisture over Ranchi

Roshan Kumar
Roshan Kumar
Smita Dey
Smita Dey Ranchi University

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