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DWD provides a monthly monitoring statistics report, which includes information on the availability and completeness of the CLIMAT reports sent by all the surface land stations that are part of GSN. The availability results are obtained by checking the collected monthly CLIMAT messages against the list of stations affiliated to the GSN and registered in OSCAR/Surface. For a station to be classified as reporting it needs to have sent a CLIMAT report 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. The completeness is obtained from the information - not mandatory though - provided on the number of days of the month missing for some observed variables. The variables included in GSN completeness monitoring are: daily mean surface pressure, daily mean air temperature, daily maximum air temperature, daily minimum air temperature, daily mean water vapour, total daily precipitation and total daily sunshine duration. Provision of the data report (monthly), typically happens on the 22nd of the following month.
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