DQRID : D051214.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/27/2002000012/12/20051600Does not affect quality
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Subject:
TWP/MWR/C3 - REPROCESS- Updated retrieval coefficients
DataStreams:twpmwrtipC3.a1, twpmwrlosC3.b1
Description:
The statistical retrieval coefficients currently in use at the Darwin (TWP/C3) site were 
developed using radiosonde RS80 launched from Manus Island during the TOGA-COARE 
experiment.
Data from Manus Island have minimal seasonality, therefore a single, annual set of 
coefficients was used at all three sites. Retrievals using these coefficients are sufficiently 
accurate especially during the local summer months (December-January). However, the Darwin 
site displays a summer/winter seasonality resulting in larger differences during the 
southern winter (May-
June).
Since we now have enough radiosonde soundings (RS80 and RS90) available at the Darwin 
site, the Darwin coefficients were modified to better reflect the local seasonality.
Suggestions: 
Data collected at the site until Dec 12, 2005 should be reprocessed with the new 

coefficients.
Differences in the PWV and LWP retrievals during summer months (December-January) are negligeable. Differences during winter months (May-June) are ~1%. Please look at the December IMMS for additional details.
Data collected at the site until Dec 12, 2005 should be reprocessed with the new 
coeff
icients.
Differences in the PWV and LWP retrievals during summer months 
(December-January) are negligeable. Differences during winter months (May-June) are ~1%. Please look at the December IMMS for additional details.
Measurements:twpmwrtipC3.a1:
  • vaptip
  • liqtip
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twpmwrlosC3.b1:
  • vap
  • liq
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