also are there trends over the last 200 years of drought years? as far as total rainfall and temperature. wondering if droughts are a sign of climate change
2007-11-07 08:05:00 · 5 answers · asked by cl3071700 2 in Environment ➔ Global Warming
The global warming people would have you believe that the droughts this year are the first ones ever.
2007-11-07 08:44:01 · answer #1 · answered by enicolls25 3 · 2⤊ 0⤋
About 1300 AD or so.
The 4 corners civilizations... the Anasazi and the Chaco Canyon Culture, were forced out of their homes by a 200 year long drouth.
2007-11-07 09:46:06 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Tough to answer as a drought is where there's less water than the population demands.
Many towns in the west are now ghost towns because the water source dried up.
Much of the west is arid and/or desert, so rain is always a precious commodity.
2007-11-07 08:29:45 · answer #3 · answered by Dr Jello 7 · 0⤊ 1⤋
As far back as you can look there have been droughts.
"
In the Sierra Nevada, Stine
[1994] found strong evidence for substantial multicentury
droughts that occurred between AD 900–
1100 and AD 1350–1200 and termed the period
the Medieval Climatic Anomaly (MCA)."
http://www.albany.edu/geosciences/Yuan_et_al_2004.pdf
2007-11-07 09:02:42 · answer #4 · answered by Tomcat 5 · 1⤊ 1⤋
Paleoclimatology, North america
2007-11-07 08:57:36 · answer #5 · answered by vladoviking 5 · 1⤊ 0⤋