The top 50 and low 50 PDFs accessible beneath were created using knowledge from the (1) NCDC Radiosonde Database of North America CD-ROMs, 1948-1996/97 and (2) NOAA/ESRL on-line radiosonde archive, 1996/ninety seven-current ( ). The climatology for a few of these websites consists of two or more stations with a view to get a prolonged time collection for calculating statistics. For example, the climatology for ABR (Aberdeen, SD) was derived from higher-air observations utilizing ABR and HON (Huron, SD), as a result of from 1953 to 1995 the upper-air web site was at HON and from 1995 to present the positioning has been at ABR. For all but 16 (7) circumstances, variations in station areas don’t exceed 60 (eighty) miles for these mixed” climatologies. In general, the combining of websites isn’t anticipated to be problematic since these plots characterize a synoptic signal and not a mesoscale signal.

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