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A GSN station is classified as “reporting” (green) if has sent a CLIMAT message that includes information of at least one of the following variables: monthly mean temperature, monthly precipitation amount, mean daily maximum temperature and mean daily minimum.
What is the difference in between brown (“not provided”) and red (“0”) station dots in the completeness performance of the GCOS surface network (GSN) between brown (“not provided”) and red (“0”) dots? ?
The completeness performance provides information on of the number of days which were used to calculate the monthly average for each variable provided in the CLIMAT report. However, the groups in section1 of CLIMAT that provide this information are not mandatory. Therefore, the system distinguishes the stations that did not send any information regarding the number of days missing for data (section1, groups 8 and 9) during the selected month (brown dot) from the stations that reported not having included the observation at all (red dot) within the selected month.
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