The raw data were downloaded on 5th January 2014, and processed over the subsequent days. There have been changes to all of the raw files only in 2013 as part of the normal ISD update process We have made no substantial changes to the codes which do the conversion to NetCDF files or the Quality Control suite. Hence the version number has only incremented by 0.0.1 and the year.
This version still contains 6103 stations, with 4060 passing the final filtering checks, down slightly from the 4071 in v18.104.22.1683p (see the HadISD paper Section 6). The patterns of flagging are very similar to v22.214.171.1243p (see figures here). However if you find something strange, do let us know using the contact details on the HadISD website. Please note the stations which are known to have issues are documented on this blog and on the website.
|Fig.1 The fraction of temperature records flagged for each station.|
|Fig. 2 The fraction of all dewpoint temperature records flagged for each station|
|Fig. 3 The fraction of all sea-level pressure records flagged for each station|
As always, if you see anything untoward in the data or are having problems using it, please do not hesitate to get in touch.