Climate change and droughts and wildfires.

History shows us there has always been climate change, from ice age to the Minoan temperature optimum to the Roman warm period to the dark ages to the medieval warm period to the little ice age to now. The question is, where does the climate go from here, how much will it warm from here, or will it start cooling again? One question is; will wildfires contribute to global warming, or will the smoke act as a cooling agent? The only way to give an answer as a scientist is to look at what the wildfire trends are. Wildfires have decreased 25% worldwide in the last 15 years!  This is according to NASA:the full article is in https://earthobservatory.nasa.gov/images/145421/building-a-long-term-record-of-fire

One recent confession from the governor of California!

 

The question is then: Why are wildfires decreasing?

One possible exclamation, droughts are decreasing. Let us check:

No, there is no discernible trend in droughts.

Since the beginning of industrialization CO2 has risen about 50%. CO2 is the feed-stock for all plants and indeed the earth is getting greener!

Yes, most areas are getting greener. There are a few areas that are getting less green, such as the southern edge of the Sahara Desert, the South American Gran Chaco, the American South West and the edges of the Gobi desert. The global environmental challenges are still enormous, but thanks to the overall increased vegetation the earth can now feed an additional 2 billion people, not to mention provide livable habitat for many more animals.

What increased CO2 does to global temperatures will come in future installments.

Published by

lenbilen

Retired engineer, graduated from Chalmers Technical University a long time ago with a degree in Technical Physics. Career in Aerospace, Analytical Chemistry, computer chip manufacturing and finally adjunct faculty at Pennsylvania State University, taught just one course in Computer Engineering, the Capstone Course.

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