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Old July 3rd 16, 01:12 PM posted to uk.sci.weather
Scott W Scott W is offline
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First recorded activity by Weather-Banter: Nov 2005
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Default Low grass minima

For the past two nights the grass minima here has been 6.7C lower than the air minima. It is usually about 4 - 5C lower. Is the high difference something to do with the saturated ground and high evaporative heat loss under a clear sky? The soil here is very heavy clay.