Votes and proceedings of the General Assembly of the state of New-Jersey . deration, it could serious-ly affect arbitrarily chosen pentad or dec-ade averages. For this reason, we decid-ed to take averages centered around thelast three solar cycles. The 23rd solarcycle extends from mid-1943 to mid-1953. the 24th solar cycle from mid-1953to mid-1963 and. for the purpose of thisarticle, we have taken the 25th cycle toextend from mid-1963 to mid-1974. Withthis in mind, the following criteria andapproximations were initially used inhandling the temperature data, whichwere taken from the World Weath
Votes and proceedings of the General Assembly of the state of New-Jersey . deration, it could serious-ly affect arbitrarily chosen pentad or dec-ade averages. For this reason, we decid-ed to take averages centered around thelast three solar cycles. The 23rd solarcycle extends from mid-1943 to mid-1953. the 24th solar cycle from mid-1953to mid-1963 and. for the purpose of thisarticle, we have taken the 25th cycle toextend from mid-1963 to mid-1974. Withthis in mind, the following criteria andapproximations were initially used inhandling the temperature data, whichwere taken from the World Weather Rec-ords H3) and Monthly Climate Data forthe World H4). I) Stations must include surface airtemperature data from 1943 through1974. Paul E Damon ? professor in the Department ofGeosciences and chief scientist of the Laboratory ofIsotope Geochemistry. College of Earth SciencesUniversity of Arizona, Tucson 85721. and Sleven MKunen is senior environmental chemisi. Environ-mental Studies Laboratory University of Utah Re-search Institute Salt Lake City 84108 447 CRS-382. .ocalions of Soulhern Hemisphere sed in this study 2) All stations that had more than min-imal site changes were discarded 3) All stations were discarded Forwhich more than 10 percent of the annualdata were missing 4) For stations meeting the above cri-teria, a missing year was interpolated h>using the average of the five precedingand the five following years (10-year av-erage) 5) If three or less months were miss-ing for a particular year, data for themonth in question for the 5 years beforearid after were averaged (10-year aver-age). If a year was missing more than 3months observations, the year itself wasdetermined as in item 4 above. 6) In averaging for any classificationof stations, the average was carried outto an additional significant figure, such °C. even though the measurementsfor any single station were accurate °C. Only 57 Southern Hemisphere stationsmet criteria I to 3. These 57
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