Summary
The relationships between precipitable water vapor and three different surface humidity parameters, dew point temperature, mixing ratio and vapor pressure, were examined in New Zealand, an area which has good vertical mixing of the atmosphere throughout the year. A small difference was found in the correlation coefficients for the three independent variables. A test for the significance of differences in correlation coefficients revealed that many of the differences were significant at the .05 level. Differences in correlation coefficients between seasons were not significant, a result of the frequency of frontal systems throughout the year. There were no significant differences between correlation coefficients for the nocturnal and mid-day soundings indicating that thermal convection plays a secondary role as a vertical mixing process in New Zealand.
Zusammenfassung
Der Zusammenhang zwischen niederschlagbarem Wasserdampf und drei verschiedenen Feuchtparametern in Bodennähe, nämlich der Taupunkttemperatur, dem Mischungsverhältnis und dem Dampfdruck wurden in Neusseland untersucht. Dieses Gebiet zeichnet sich durch gute vertikale Mischungsverhältnisse während des ganzen Jahres aus. Geringfügige Unterschiede wurden in den Korrelationskoeffizienten für die drei unabhängigen Parameter gefunden. Ein Signifikanztest der Unterschiede in den Korrelationskoeffizienten zeigte, daß manche dieser Unterschiede im 5-Prozent-Niveau signifikant waren. Unterschiede in den Korrelationskoeffizienten zwischen einzelnen Jahreszeiten waren dagegen nicht signifikant, was als Effekt der Häufigkeit von Frontdurchgängen während des Jahres anzusehen ist. Es zeigten sich auch keine signifikanten Unterschiede in den Korrelationskoeffizienten zwischen den nächtlichen und den Mittags-Radiosondenaufstiegen, was darauf schließen läßt, daß thermische Konvektion über Neusseland nur eine sekundäre Rolle in den vertikalen Mischungsprozessen spielt.
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Tuller, S.E. The relationship between precipitable water vapor and surface humidity in New Zealand. Arch. Met. Geoph. Biokl. A. 26, 197–212 (1977). https://doi.org/10.1007/BF02247163
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DOI: https://doi.org/10.1007/BF02247163