Changes to radiosonde reports and their processing for numerical weather prediction

被引：21

作者：

Ingleby, Bruce ^{[1
,2
]}

Edwards, David ^{[1
]}

机构：

[1] Met Off, Exeter EX1 3PB, Devon, England

[2] ECMWF, Reading RG2 9AX, Berks, England

来源：

ATMOSPHERIC SCIENCE LETTERS | 2015年 / 16卷 / 01期

关键词：

radiosonde; balloon drift; data assimilation; temperature; humidity; wind; BALLOON DRIFT; IMPACT;

D O I：

10.1002/asl2.518

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In the biggest change to radiosonde reporting for many years binary BUFR reports are replacing alphanumeric TEMP code. The binary reports can provide much higher vertical resolution and the time and position of each level, but changes to observation processing at forecast centres are needed to use the new reports and in particular the level dependent positions. Using data vertically averaged over model layers, observation minus background (O-B) statistics from both formats compare closely (with a temperature offset of about 0.1 degrees C due to rounding in the older format). Correct treatment of balloon drift improves the O-B statistics at upper-levels.

引用

页码：44 / 49

页数：6

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