Saturday, October 21, 2017

Sky and Ground Thermal Observation for NearSys Station, 21 October 2017

At 11:00 AM MDT, the sky above NearSys Station was 100% covered with low stratus, it has not started to rain yet. The thermal imager measured the ground temperature as 27 *F and the sky temperature at 9 * F.

Assuming a dry adiobatic lapse rate of 5.4 *F, the ceiling altitude was 3,300 feet.

The Boise METAR reported broken clouds at 9,500 feet AGL. At 4:00 PM, the Boise METAR reported 100% overcast at an altitude of 3,600 feet.

If I can assume station BOI have the same type of cloud cover as NearSys Station in the afternoon, then the altitude calculation NearSys Station was reasonable.

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