Posted on 07/28/2007 7:52:20 PM PDT by exposing_the_left
Edited on 07/30/2007 10:16:42 PM PDT by Admin Moderator. [history]
"The central fact is that after three quarters of a century of extraordinarily mild conditions, the earth's climate seems to be cooling down. Meteorologists disagree about the cause and extent of the cooling trend, as well as over its specific impact on local weather conditions. But they are almost unanimous in the view that the trend will reduce agricultural productivity for the rest of the century. If the climatic change is as profound as some of the pessimists fear, the resulting famines could be catastrophic."
(Excerpt) Read more at denisdutton.com ...
LOL....... then theres always buffalo chips !
The Sun is at one of its activity minimums. It will be several months before we can say if a new solar cycle has begun. (Although today, a new sun spot has formed.)
The longer it takes for the Sun to "get going" again, the colder the climate may become over the next cycle or two. That's a couple of decades.
Do a little reading about the Dalton and Maunder solar minimums. Better stock up on hot chocolate.
The evidence in support of these predictions has now begun to accumulate so massively that meteorologists are hard-pressed to keep up with it.The only thing missing from this article was the phrase "settled science".
The commies were so good at producing wheat they had to import it from us.
I wonder why we never hear about higher temperatures and CO2 being good for crop production.
Normally I agree with critics of re-posting stories, but this one, by it’s very nature, deserves to be posted regularly. Once every quarter or so. We need to be reminded how INSANE the environmental whackos are and this story, all by itself, serves as the best reminder possible.
I remember my first grade teacher in Chicago trying to scare the hell out of us with Global Cooling. She handed out maps showing how glaciers would cover our city.I got similar dire predictions from my grade school teachers in Philadelphia.
No problemo, my FRiend. Me understand. :)
How can this be true....we’ve been Gored!
Effects of Atmospheric CO2 Enrichment on Spring Wheat Yields in a Semi-Arid Region of China
Reference:
Li, W., Han, X., Zhang, Y. and Li, Z. 2007.
Effects of elevated CO2 concentration, irrigation and nitrogenous fertilizer application on the growth and yield of spring wheat in semi-arid areas. Agricultural Water Management 87: 106-114.
What was done:
The authors studied the effects of minor-to-modest CO2 concentration increases of 14.5, 40 and 54.5 ppm on leaf area index, leaf area duration, shoot biomass and yield of spring wheat (Triticum aestivum cv. Dingxi 24) grown for two years in a semi-arid region of China under (1) natural conditions, (2) with irrigation and (3) with irrigation and added fertilizer.
What was learned:
Among other things, Li et al. report that "elevated CO2 concentration owing to CO2 application leads to remarkable increase in leaf area index and shoot biomass, and also generates the higher value of leaf area duration that can benefit the photosynthesis in the growth stage and yield increase in crop." More specifically, they report that the 40-ppm increase in CO2 concentration increased grain yield by 4.2% (0.105%/ppm) under natural conditions, while with irrigation and fertilization (treatment 3) the 14.5-, 40- and 54.5-ppm CO2 concentration increases increased grain yield by 6.3% (0.434%/ppm), 13.1% (0.328%/ppm) and 19.8% (0.363%/ppm), respectively.
What it means:
Even under natural (non-irrigated and unfertilized) conditions in a semi-arid region of China, the CO2-induced increase in wheat yield observed in this study (0.105%/ppm) was equivalent to the low-end response derived from the meta-analyses of Long et al. (2005, 2006). This finding is particularly gratifying, since the study of Lobell and Field (2007) demonstrates that even this low-end response is sufficient to more than compensate for the negative effect of global warming experienced between 1981 and 2002 on global wheat yield. What is more, since this period of time is typically claimed by climate alarmists to have seen global temperatures rise at an unprecedented rate and to an unprecedented level, these findings suggest that even this supposedly catastrophic degree of global warming poses absolutely no threat to global wheat yields when it is accompanied by the current rate-of-rise in the air's CO2 content. And when water and fertilizers are applied to the soil, the aerial fertilization effect of atmospheric CO2 enrichment in the region of Li et al.'s study would appear to be even more effective, rising to a yield-response- level somewhere in the vicinity of 0.328-0.434%/ppm.
References:
Lobell, D.B. and Field, C.B. 2007. Global scale climate-crop yield relationships and the impacts of recent warming. Environmental Research Letters 2: 1-7.
Long, S.P., Ainsworth, E.A., Leakey, A.D.B. and Morgan, P.B. 2005.
Global food insecurity. Treatment of major food crops with elevated carbon dioxide or ozone under large-scale fully open-air conditions suggests recent models may have overestimated future yields. Philosophical Transactions of the Royal Society B 360: 2011-2020.
Long, S.P., Ainsworth, E.A., Leakey, A.D.B., Nosberger, J. and Ort, D.R. 2006. Food for thought: Lower-than-expected crop yield stimulation with rising CO2 concentrations. Science 312: 1918-1921.
Reviewed 28 March 2007
Yep that’s exactly what I am saying, sunspot cycle 24 is curiously AWOL and no one knows where it went. It’s also true that the onset of the ‘little ice age’ was much more sudden than people think, last time it happened over a ten year period of time.
It appears the current ‘modern maximum’ of the last 6 sunspot cycles is coming to an end.
The Earth experiences ice ages, which last an average of 100,000 years, and interglacial periods which last about 11,000 years. The current interglacial period is now 10-15000 years old, depending on how you count the end of the last ice age.
The sun is brighter now than anytime in the past 8-10000 years, but the increase in solar output was not calculated to be sufficient to cause all of the past century’s modest warming. The missing amplifier was discovered in 2002 with scientific papers from Veizer, Shaviv, Carslaw, and most recently Svendsmark of the Danish National Space Agency.
All these scientists have proved that the sun’s protective solar wind, generated from sunspots, blows away the deep space cosmic rays, forming a protective shield around the Earth. With fewer sunspots there is less solar wind, more cosmic rays, and more cloud formation from those cosmic rays. More cloud formation means more cooling effect on the planet, more precipitation everywhere.
If future sunspot predictions prove true, you are going to want global warming, RSN.
Is the world cooling? We need higher taxes, World Government, and more Birth Control and Abortion! Is the world warming? We need higher taxes, World Government, and more Birth Control and Abortion!!!
One of the "solutions" at the time was to drop soot onto the ice caps, the idea being that the black material would absorb the Sun's energy and melt the excess ice. They blamed atmospheric soot for blocking sunlight and creating the conditions that would lead to the 'new' ice age.
A sunspot cycle, on average, is about 11 years. A solar magnetic cycle, twice that. Please refer to the following for info on when the next sunspot cycle (Cycle-24) is expected to peak.
"Solar activity is entering a period of deep minimum. Based on declining sunspot numbers and other factors, the cycle (Cycle-23) should hit rock bottom in March 2008 plus or minus six months"
From spaceweather.com for Friday, April 27, 2007:
SOLAR CYCLE NEWS: This week in Boulder, Colorado, a group of leading solar physicists met to compare and discuss their predictions for the next solar maximum. On April 25th they held a press conference and announced ... a split decision. One camp holds that Solar Cycle 24 will be intense and peak in 2011; a second group predicts a much weaker maximum in 2012.
As a community, solar physicists are still undecided on the best way to predict solar activity. The plot (see link below) is a summary of 40 different forecasts, none of which agree in detail. The confusion won't last forever. As Cycle 24 unfolds, the sun itself will tell us which is correct.
http://www.spaceweather.com/swpod2007/27apr07/prediction_big.jpg
Researchers were able to agree on one thing: Solar activity is entering a period of deep minimum. Based on declining sunspot numbers and other factors, the cycle should hit rock bottom in March 2008 plus or minus six months.
See spaceweather.com for Friday, April 27, 2007:
>>Newsweek 1975:
“The central fact is that after three quarters of a century of extraordinarily mild conditions, the earth’s climate seems to be cooling down. Meteorologists disagree about the cause and extent of the cooling trend, as well as over its specific impact on local weather conditions. But they are almost unanimous in the view that the trend will reduce agricultural productivity for the rest of the century. If the climatic change is as profound as some of the pessimists fear, the resulting famines could be catastrophic.”<<
Historically, 1976 was destined to be the last year of a flat spot (not cooling) that began in 1945.
People that talk about CO2 as being the dominant heating factor don’t have a good explanation for this flat period.
Its worth noting though that the ocean levels continued to rise during the 1945-1976 flat spot.
I wonder if there is anyone on this board that would be old enough to remember the previous Global Warming and Global Cooling ‘scares’ that occurred before this one. My understanding is that there were many of them.
>>I wonder if there is anyone on this board that would be old enough to remember the previous Global Warming and Global Cooling ‘scares’ that occurred before this one. My understanding is that there were many of them.<<
Since the globe warmed from 1900 to 1945 and then stopped warming it was reasonable to be concerned that it might signal a period of cooling. But in 1976 warming resumed and began to accelerate.
NOW you've got it!! Just be sure to vote demonRat in '08!
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