Below are plots of SYNOP/BUOY/radiosonde BUFR coverage for June November 2019 - reports as decoded at ECMWF, some reports not in standard BUFR are not decoded. Daily coverage (updated automatically) is available from the Monitoring Maps
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Surface (SYNOP) coverage
About 86% 89% of stations now report in BUFR, earlier in the last quarter 2019 several countries including Kazakhstan and Mongolia increased the number/frequency of their BUFR reports. Coverage for Europe is essentially complete apart from three NMSs (Bulgaria, Moldova and North Macedonia). For some countries stations/reports designated as "additional data" only are received in TAC but not in BUFR. Light blue markers indicate that fewer BUFR reports are received than SYNOP reports - in most cases the BUFR is six-hourly but the SYNOPs are three-hourly. (Unlike TEMP data, below, alphanumeric SYNOP reports reformatted into BUFR are generally acceptable.) From 9 February to 31 March 2019 very few Synops, both TAC and BUFR, from block 64 (West Africa) reached ECMWF.
Countries that have notified the end of Some countries have stopped sending TAC SYNOP transmission data on the GTS are shown green (this is not fully up-to-date) and labelled 'Post SYNOP', but in some cases ECMWF receives reports converted from BUFR to TAC in Washington, we intend to stop processing these reports but some care is needed. Recently some stations in Africa (Mauritania and other countries) have only been available in BUFR. ECMWF is assimilating BUFR surface reports from these countries plus some others.
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