Variation Characteristics Water in Henan of Atmospheric Precipitable in Recent 11 Years
Abstract：Based on the NCEP FNL analysis data （1°×1°） from 2000 to 2010, this paper analyzed the temporal-spatial distribution characteristics and variation tendency of the atmospheric preeipitable wa- ter over Henan province. The results showed that ： annual precipitable water in Henan is 270.48 kg/m2 , and it increases gradually from northwest to southeast. Preeipitable water varies with season obviously, which is most in summer （ monthly average 41.77 kg/m2 ） and least in winter （ monthly average 8.54 kg/ m2）. The monthly atmospheric precipitable water is least in January （8.04 kg/m2） and most in July （47.19 kg/m2）. In recent 11 years, precipitable water the most year is 1.12 times as much as that the least year, the interannual variation is not so obvious, and the overall prieipitable water shows a slight reduction.
Keywords：atmospheric precipitable waterspatial distributionseasonal distributioninterannual variation
Publication Date：2012-05-26
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 45-48 )