How elevation affects local climate and onset of spring

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Opis:
On April 27, 2020 I found took photos and video of forest areas only 20 miles apart but 1000 feet in elevation difference. I found tulip poplar and sugar maple trees at both sites and compared their development. The difference 1000 feet of elevation makes was dramatic! The hypotheses that 1000 ft of elevation change = 3 to 4 degree change in average temperature and would be similar to driving 300 miles north are discussed.