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Why So Dry? Ocean Temperatures Alone Don't Explain Droughts
Science News ^
| 2-9-2007
| Patrick L Barry
Posted on 02/09/2007 3:33:59 PM PST by blam
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To: blam
21
posted on
02/09/2007 4:14:46 PM PST
by
bcsco
To: blam
"...new finding suggests that the causes may be more complex than many have supposed..."
Duh, You Think?
To: blam
"The western United States continues to struggle with the worst dry spell since the 1930s..."
70 years ago, and the awful CO2 has been rising all along, or so they say. Why then haven't the droughts, caused by rising temperatures, been at least consistent, if not worse? What was once the Dust Bowl should now look like the Sahara.
23
posted on
02/09/2007 4:27:05 PM PST
by
syncked
To: blam
Droughts and deserts are caused by a lack of precipitation. High temperature is not the cause. Some of the wettest areas on earth are also the warmest. Some of the driest areas are also the coldest.
Global warming does not imply world wide drought except in the mind of those wanting to increase the alarm. What with all that melted ice there could likely be more moisture in the air and more precipitation.
24
posted on
02/09/2007 5:00:18 PM PST
by
etlib
(No creature without tentacles has ever developed true intelligence)
To: etlib
" What with all that melted ice there could likely be more moisture in the air and more precipitation." Yes. Ice Ages are very dry events.
25
posted on
02/09/2007 5:26:02 PM PST
by
blam
To: Wuli
So, the earth can suddenly have temperatures "3 degrees centigrade warmer than today, on its own, lasting between 1000 A.D. and 1300 A.D, but here in 2007 A.D it can only be man made?????Yes. And if you have a problem with that, you're no better than a Holocaust denier. /sarc
26
posted on
02/09/2007 5:51:54 PM PST
by
GATOR NAVY
(Naming CVNs after congressmen and mediocre presidents burns my butt)
To: blam
IMO this drought is in part man-made.
Grazing regulations have induced a monoculture of over-mature sage that precludes grass cover. The pebbly surface adsorbs IR and rejects water, where the grasses used to reflect IR, transpire water in the day and collect it at night. That changes the entire water cycle over a distance of a thousand miles.
27
posted on
02/09/2007 6:19:00 PM PST
by
Carry_Okie
(Duncan Hunter for President)
To: Carry_Okie
And, the buffalo didn't do that when they were there?
28
posted on
02/09/2007 6:44:48 PM PST
by
blam
Comment #29 Removed by Moderator
To: blam
30
posted on
02/09/2007 7:20:10 PM PST
by
Kevmo
(Duncan Hunter just needs one jump-the-shark Verrucktenfreude moment by Hillary Clinton in 2007)
To: blam
And, the buffalo didn't do that when they were there? Bison were a relatively recent introduction, driven over the land bridge in the late Pleistocene. The wolves probably came with them.
IIRC, for the most part, the buffalo herds weren't in the Great Basin and across New Mexico; they were further north. As you may recall, the great herds of the early 19th Centry may have been an aberration due to a human epidemic. When the Great Basin was first settled by white folks, the usual treatment was a nearly ideal combination of sheep and cattle. They browsed down the sage and reduced its production of pre-emergence hormones that suppress the grasses and forbs.
31
posted on
02/09/2007 9:09:08 PM PST
by
Carry_Okie
(Duncan Hunter for President)
To: Carry_Okie
" As you may recall, the great herds of the early 19th Centry may have been an aberration due to a human epidemic." Yes. Okay.
32
posted on
02/09/2007 9:20:03 PM PST
by
blam
To: Brad from Tennessee
To: Carry_Okie
Isn't it also true that bison ate plants that "modern" ranchers consider "weeds" along with migrating thereby avoiding overgrazing any particular part of their range?
34
posted on
02/10/2007 10:25:23 AM PST
by
oneolcop
(Take off the gloves!)
To: 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; BBell; ...
Note: this topic is from 2/09/2007. Thanks blam.
35
posted on
03/01/2011 5:28:41 PM PST
by
SunkenCiv
(The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
To: Ernest_at_the_Beach
· GGG managers are SunkenCiv, StayAt HomeMother, and Ernest_at_the_Beach · · join list or digest · view topics · view or post blog · bookmark · post a topic · subscribe ·
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Note: this topic is from 2/09/2007. Thanks blam. Researchers recently pieced together the most comprehensive history yet of drought in the Great Plains region. The record covers the 10,000 years since the end of the last ice age. This new time line shows three distinct megadroughtsâperiods of severe dryness lasting for centuries. Scientists often attribute drought to changes in ocean-surface temperature patterns, such as those associated with El Niños. But when the research team compared its record with estimates of historical sea-surface temperatures, only the most recent of the three dry spells matched up... the scientists found a 300-year dry period that began about 1,000 years ago, coinciding with a well-known warm episode called the Medieval Climate Anomaly. They found two other epochs of desertlike conditions that ran from 4,500 to 2,300 years ago and from 9,600 to 6,500 years ago. Blast from the Past.
Just adding to the catalog, not sending a general distribution.
To all -- please ping me to other topics which are appropriate for the GGG list. |
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36
posted on
03/01/2011 5:30:21 PM PST
by
SunkenCiv
(The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
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