Subscribe Now Subscribe Today
Science Alert
 
Blue
   
Curve Top
Journal of Applied Sciences
  Year: 2008 | Volume: 8 | Issue: 3 | Page No.: 480-488
DOI: 10.3923/jas.2008.480.488
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Improvement of Remote Sensing Techniques in TPW Assessment Using Radiosonde Data

M.R. Mobasheri, S.M. Purbagher Kordi, M. Farajzadeh and A. Sadeghi Naeini

Abstract:
A great amount of efforts have so far been devoted to the global determination of Total Precipitable Water (TPW) but little work is directed toward the regional assessment of TPW using remote sensing techniques. To increase the level of confidence in TPW assessment in the local to regional scale using satellite imageries, a simultaneous in situ measurement by radiosonde and satellite over passing were carried out. The results show a high correlation (0.93) between radiosondes data and the ratio of the two absorption band (narrow band to a wide band). This in MODIS sensor is the ratio of channel 18 to channel 19. It is found that the application of different algorithms via classification of the atmosphere by its water vapor content and definition of threshold values for TPW, may not work in the confined regions such as Tehran capital city of Iran. The result of this study is presented through a conversion equation like TPW (Real) = a.TPW18/19 + b. More work is required to evaluate applicability of this equation for different seasons and different states of the atmosphere.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

M.R. Mobasheri, S.M. Purbagher Kordi, M. Farajzadeh and A. Sadeghi Naeini, 2008. Improvement of Remote Sensing Techniques in TPW Assessment Using Radiosonde Data. Journal of Applied Sciences, 8: 480-488.

DOI: 10.3923/jas.2008.480.488

URL: https://scialert.net/abstract/?doi=jas.2008.480.488

COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

Curve Bottom