CLIMAT

Information on so-called normal values of these parameters, usually averaged over a period of 30 years for a specific month, can also be transmitted with CLIMAT-messages.

CLIMAT SHIP messages contain information on fewer variables (e.g., total sunshine for the month and extreme values are not included).

Notwithstanding, CLIMAT-based reporting will still play an essential role in obtaining climate information in the upcoming decades, as many national meteorological services will not change to the BUFR format rapidly and climate relevant variables should be monitored uninterruptedly to obtain useful records.

[2] The monthly climatological upper-air data included in CLIMAT TEMP (SHIP) can basically also be derived from daily reports, due to improvements in collection and exchange of the daily TEMP messages and improved real-time quality control, and therefore discontinuing these messages is currently discussed.

Increasing quality and quantity of CLIMAT reports sent from meteorological observation sites ameliorates the generation of these products.