An objective method for assessing representativeness of a station network measuring minimum temperature near the ground |
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| Authors: | Z Zemel J Lomas |
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| Institution: | (1) The University of Queensland, School of Geography, Planning and Architecture, Brisbane, QLD 4072, Australia |
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| Abstract: | The spatial auto-correlation of minimum temperature was analyzed for a topoclimatological station network in the Huleh Valley of Israel on radiation cooling nights, using the method of optimum interpolation. Only a few stations all of which are situated in a flat area along the longitudinal central axis, exhibited a distinct dependence of the auto-correlation with distance. These stations were less representative of the entire valley compared with sites close to the slopes.The more varied topography near the edges of the valley leaves its stamp on the auto-correlation field in two specific ways:| (a) |
Due to the more sloping surface, the increased randomness on the microscale diminishes and more generally obscures the dependence of the auto-correlation with distance from a given reference station.
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The increased mixing associated with the slope-induced airflow increases the areal auto-correlation surrounding a given station.
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