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发表于 2019-12-10 20:12:56
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sig995和surface的问题,大概来讲就是一个是地面数据,一个是近地面数据:
我这发不了截图,我把网页上的文字复制下来哈,格式可能不太好看,或者你进这个网址看一下https://www.esrl.noaa.gov/psd/da ... erived.surface.html
Brief Description:
NCEP/NCAR Reanalysis Monthly Means and Other Derived Variables..
Temporal Coverage:
Daily and Monthly Values for 1948/01 - present.
Long term monthly means, derived from data for years 1981 - 2010.
Spatial Coverage:
2.5 degree latitude x 2.5 degree longitude global grid (144x73).
90N - 90S, 0E - 357.5E
Levels:
Surface or near the surface (.995 sigma level)
The variables on sigma level 0.995 are: air, rhum, uwnd, vwnd and wspd.
Also, precipitable water is included here, because it is a 3-D file on a 2.5 degree grid, but it is not a surface value, but rather for the entire atmospheric column
Update Schedule:
Monthly |
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