Home |
Search |
Today's Posts |
![]() |
|
sci.geo.meteorology (Meteorology) (sci.geo.meteorology) For the discussion of meteorology and related topics. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
![]() |
|||
|
|||
![]()
In article , says...
"Eric Swanson" wrote Martian, what was the date on this quote? Was it before or after last summer's major revelations? Reference please. 2005 Ties for 2nd Warmest Year Ever, But Cause Still Uncertain By Robert Roy Britt LiveScience Managing Editor posted: 06 January 2006 Thanks for the reference: http://www.livescience.com/environme...2005_heat.html Predictions early in 2005 that the year would be the warmest on record turned out to be off the mark. A new study finds last year tied for the second-warmest year since reliable records have been kept starting in the late 1800s. The global average temperature in 2005 was 0.54 degrees Fahrenheit (0.3 Celsius) warmer than the long-term average, tying a mark set in 2002. But a puzzling general pattern, seen the past three decades, persisted: The most significant warming occurred in the Arctic, where the ice cap is shrinking at an alarming pace. Seven times faster Since November 1978, the Arctic atmosphere has warmed seven times faster than the average warming trend over the southern two-thirds of the globe, based on data from NOAA satellites. "It just doesn't look like global warming is very global," said John Christy, director of the Earth System Science Center at the University of Alabama in Huntsville. [cut] "Obviously some part of the warming we've observed in the atmosphere over the past 27 years is due to enhanced greenhouse gases. Simple physics tells you that," Christy said. "But even if you acknowledge the effects of greenhouse gases, when you look at this pattern of warming you have to say there must also be something else at work here." [cut] "The computer models consistently predict that global warming due to increasing greenhouse gases should show up as strong warming in the tropics," Christy said. Yet the tropical atmosphere has warmed by only about 0.3 degrees Fahrenheit in 27 years. It's worth noting that the results from Mears et al. at RSS shows stronger warming in the tropics than does the latest UAH computations. http://ams.confex.com/ams/Annual2006...per_104116.htm -- Eric Swanson --- E-mail address: e_swanson(at)skybest.com :-) -------------------------------------------------------------- |
#2
![]() |
|||
|
|||
![]()
Eric Swanson wrote:
It's worth noting that the results from Mears et al. at RSS shows stronger warming in the tropics than does the latest UAH computations. http://ams.confex.com/ams/Annual2006...per_104116.htm In http://ams.confex.com/ams/pdfpapers/104116.pdf Mears et. al. write: "In the Northern extratropics, there is excellent agreement between the Christy et al. results and a sub sample of the radiosonde sites chosen to have consistent instrumentation type and thus thought to be relatively free of error (Christy, Spencer et al. 2000). Presumably the agreement between these radiosondes and our data would be somewhat worse, though this has not been tested here." Pretty much what I've been saying, and waiting for, for quite some time. |
#4
![]() |
|||
|
|||
![]()
Eric Swanson wrote:
In article , says... Eric Swanson wrote: It's worth noting that the results from Mears et al. at RSS shows stronger warming in the tropics than does the latest UAH computations. http://ams.confex.com/ams/Annual2006...per_104116.htm In http://ams.confex.com/ams/pdfpapers/104116.pdf Mears et. al. write: "In the Northern extratropics, there is excellent agreement between the Christy et al. results and a sub sample of the radiosonde sites chosen to have consistent instrumentation type and thus thought to be relatively free of error (Christy, Spencer et al. 2000). Presumably the agreement between these radiosondes and our data would be somewhat worse, though this has not been tested here." Pretty much what I've been saying, and waiting for, for quite some time. That's "extratropics" not the tropics, which is the latitudes where the differences between the MSU and sonde data resulted in controversy. As Prabhakara pointed out back in 2000, the monthly data is dominated by short term variation and thus the trend is a small part (about 5%) of the variance. There could easily be "good agreement" between the sonde data and BOTH the UAH and RSS products for the Northern extratropics, while they differ in their respective global trends. We'll never know until RSS performs the same comparison. We take the winner of that comparison. |
#5
![]() |
|||
|
|||
![]()
In article , says...
Eric Swanson wrote: In article , says... Eric Swanson wrote: It's worth noting that the results from Mears et al. at RSS shows stronger warming in the tropics than does the latest UAH computations. http://ams.confex.com/ams/Annual2006...per_104116.htm In http://ams.confex.com/ams/pdfpapers/104116.pdf Mears et. al. write: "In the Northern extratropics, there is excellent agreement between the Christy et al. results and a sub sample of the radiosonde sites chosen to have consistent instrumentation type and thus thought to be relatively free of error (Christy, Spencer et al. 2000). Presumably the agreement between these radiosondes and our data would be somewhat worse, though this has not been tested here." Pretty much what I've been saying, and waiting for, for quite some time. That's "extratropics" not the tropics, which is the latitudes where the differences between the MSU and sonde data resulted in controversy. As Prabhakara pointed out back in 2000, the monthly data is dominated by short term variation and thus the trend is a small part (about 5%) of the variance. There could easily be "good agreement" between the sonde data and BOTH the UAH and RSS products for the Northern extratropics, while they differ in their respective global trends. We'll never know until RSS performs the same comparison. We take the winner of that comparison. But, Christy et al. have claimed that the previous versions of their product met the test you demand. Now they have made a major revision in their analysis, but we don't yet know how well the latest UAH version stacks up against the sonde data, as far as I am aware. What if the latest version does worse than the earlier version? Will you only accept the previous version (5.1) over the latest (5.2)? -- Eric Swanson --- E-mail address: e_swanson(at)skybest.com :-) -------------------------------------------------------------- |
#6
![]() |
|||
|
|||
![]()
Eric Swanson wrote:
In article , says... Eric Swanson wrote: In article , says... Eric Swanson wrote: It's worth noting that the results from Mears et al. at RSS shows stronger warming in the tropics than does the latest UAH computations. http://ams.confex.com/ams/Annual2006...per_104116.htm In http://ams.confex.com/ams/pdfpapers/104116.pdf Mears et. al. write: "In the Northern extratropics, there is excellent agreement between the Christy et al. results and a sub sample of the radiosonde sites chosen to have consistent instrumentation type and thus thought to be relatively free of error (Christy, Spencer et al. 2000). Presumably the agreement between these radiosondes and our data would be somewhat worse, though this has not been tested here." Pretty much what I've been saying, and waiting for, for quite some time. That's "extratropics" not the tropics, which is the latitudes where the differences between the MSU and sonde data resulted in controversy. As Prabhakara pointed out back in 2000, the monthly data is dominated by short term variation and thus the trend is a small part (about 5%) of the variance. There could easily be "good agreement" between the sonde data and BOTH the UAH and RSS products for the Northern extratropics, while they differ in their respective global trends. We'll never know until RSS performs the same comparison. We take the winner of that comparison. But, Christy et al. have claimed that the previous versions of their product met the test you demand. Now they have made a major revision in their analysis, but we don't yet know how well the latest UAH version stacks up against the sonde data, as far as I am aware. What if the latest version does worse than the earlier version? Will you only accept the previous version (5.1) over the latest (5.2)? As you know, the correction effected the tropics mostly. But, sure, compare everything. There is no compelling reason that a more accurate analysis should correlate less well over CONUS. |
#7
![]() |
|||
|
|||
![]()
In article , says...
Eric Swanson wrote: In article , says... Eric Swanson wrote: In article , says... Eric Swanson wrote: It's worth noting that the results from Mears et al. at RSS shows stronger warming in the tropics than does the latest UAH computations. http://ams.confex.com/ams/Annual2006...per_104116.htm In http://ams.confex.com/ams/pdfpapers/104116.pdf Mears et. al. write: "In the Northern extratropics, there is excellent agreement between the Christy et al. results and a sub sample of the radiosonde sites chosen to have consistent instrumentation type and thus thought to be relatively free of error (Christy, Spencer et al. 2000). Presumably the agreement between these radiosondes and our data would be somewhat worse, though this has not been tested here." Pretty much what I've been saying, and waiting for, for quite some time. That's "extratropics" not the tropics, which is the latitudes where the differences between the MSU and sonde data resulted in controversy. As Prabhakara pointed out back in 2000, the monthly data is dominated by short term variation and thus the trend is a small part (about 5%) of the variance. There could easily be "good agreement" between the sonde data and BOTH the UAH and RSS products for the Northern extratropics, while they differ in their respective global trends. We'll never know until RSS performs the same comparison. We take the winner of that comparison. But, Christy et al. have claimed that the previous versions of their product met the test you demand. Now they have made a major revision in their analysis, but we don't yet know how well the latest UAH version stacks up against the sonde data, as far as I am aware. What if the latest version does worse than the earlier version? Will you only accept the previous version (5.1) over the latest (5.2)? As you know, the correction effected the tropics mostly. But, sure, compare everything. There is no compelling reason that a more accurate analysis should correlate less well over CONUS. But, Christy et al claimed monthly correlations around 0.98 or 0.99 for their version 5.0 product in their paper in J. Atmos. and Oceanic Tech., 2000. That version has been shown to be in error. Are they now claiming correlations greater than those for the newest version? Or, were the previous claims of high correlations also in error? -- Eric Swanson --- E-mail address: e_swanson(at)skybest.com :-) -------------------------------------------------------------- |
#8
![]() |
|||
|
|||
![]()
Eric Swanson wrote:
In article , says... Eric Swanson wrote: In article , says... Eric Swanson wrote: In article , says... Eric Swanson wrote: It's worth noting that the results from Mears et al. at RSS shows stronger warming in the tropics than does the latest UAH computations. http://ams.confex.com/ams/Annual2006...per_104116.htm In http://ams.confex.com/ams/pdfpapers/104116.pdf Mears et. al. write: "In the Northern extratropics, there is excellent agreement between the Christy et al. results and a sub sample of the radiosonde sites chosen to have consistent instrumentation type and thus thought to be relatively free of error (Christy, Spencer et al. 2000). Presumably the agreement between these radiosondes and our data would be somewhat worse, though this has not been tested here." Pretty much what I've been saying, and waiting for, for quite some time. That's "extratropics" not the tropics, which is the latitudes where the differences between the MSU and sonde data resulted in controversy. As Prabhakara pointed out back in 2000, the monthly data is dominated by short term variation and thus the trend is a small part (about 5%) of the variance. There could easily be "good agreement" between the sonde data and BOTH the UAH and RSS products for the Northern extratropics, while they differ in their respective global trends. We'll never know until RSS performs the same comparison. We take the winner of that comparison. But, Christy et al. have claimed that the previous versions of their product met the test you demand. Now they have made a major revision in their analysis, but we don't yet know how well the latest UAH version stacks up against the sonde data, as far as I am aware. What if the latest version does worse than the earlier version? Will you only accept the previous version (5.1) over the latest (5.2)? As you know, the correction effected the tropics mostly. But, sure, compare everything. There is no compelling reason that a more accurate analysis should correlate less well over CONUS. But, Christy et al claimed monthly correlations around 0.98 or 0.99 for their version 5.0 product in their paper in J. Atmos. and Oceanic Tech., 2000. That version has been shown to be in error. Are they now claiming correlations greater than those for the newest version? Or, were the previous claims of high correlations also in error? You are running away from the issue of comparing the differences of UAH and RSS with the "consistent" radiosonde data. |
#9
![]() |
|||
|
|||
![]()
In article , says...
Eric Swanson wrote: In article , says... Eric Swanson wrote: In article , says... Eric Swanson wrote: In article , says... Eric Swanson wrote: It's worth noting that the results from Mears et al. at RSS shows stronger warming in the tropics than does the latest UAH computations. http://ams.confex.com/ams/Annual2006...per_104116.htm In http://ams.confex.com/ams/pdfpapers/104116.pdf Mears et. al. write: "In the Northern extratropics, there is excellent agreement between the Christy et al. results and a sub sample of the radiosonde sites chosen to have consistent instrumentation type and thus thought to be relatively free of error (Christy, Spencer et al. 2000). Presumably the agreement between these radiosondes and our data would be somewhat worse, though this has not been tested here." Pretty much what I've been saying, and waiting for, for quite some time. That's "extratropics" not the tropics, which is the latitudes where the differences between the MSU and sonde data resulted in controversy. As Prabhakara pointed out back in 2000, the monthly data is dominated by short term variation and thus the trend is a small part (about 5%) of the variance. There could easily be "good agreement" between the sonde data and BOTH the UAH and RSS products for the Northern extratropics, while they differ in their respective global trends. We'll never know until RSS performs the same comparison. We take the winner of that comparison. But, Christy et al. have claimed that the previous versions of their product met the test you demand. Now they have made a major revision in their analysis, but we don't yet know how well the latest UAH version stacks up against the sonde data, as far as I am aware. What if the latest version does worse than the earlier version? Will you only accept the previous version (5.1) over the latest (5.2)? As you know, the correction effected the tropics mostly. But, sure, compare everything. There is no compelling reason that a more accurate analysis should correlate less well over CONUS. But, Christy et al claimed monthly correlations around 0.98 or 0.99 for their version 5.0 product in their paper in J. Atmos. and Oceanic Tech., 2000. That version has been shown to be in error. Are they now claiming correlations greater than those for the newest version? Or, were the previous claims of high correlations also in error? You are running away from the issue of comparing the differences of UAH and RSS with the "consistent" radiosonde data. I think not. Christy et al. (2000) compared their TLT product with a simulation of that product using radiosonde derived temperature profiles. In so doing, they were not making an actual comparison between the sonde data and the TLT, as the simulation included the results of their processing algorithm in the simulation. Thus, there was no test of the validity of their algorithm, which was supposed to remove the stratospheric influence from the MSU channel 2 data. Fu et al. also processed the channel 2 data to remove the stratospheric trend, but their method produced a much larger warming trend than the Christy et al. version 5.1. They were attacked by Christy and Spencer, who claimed that their data was the more accurate, because of their analysis using the sonde data. Yet, Christy et al. later admitted that they had made an error in their processing. At the moment, I see no reason to believe that their latest results are in any way validated by the earlier comparison with the sonde data. Back in 2000, Prabhakara produced an analysis of the channel 2 data which also indicated a larger warming than the Christy et al. results of the day. Prabhakara's analysis minimized the stratospheric component without the sort of processing employed by Christy et al. I submit that Prabhakara's work was actually corroborated by the latest Christy et al. 5.2 results. -- Eric Swanson --- E-mail address: e_swanson(at)skybest.com :-) -------------------------------------------------------------- |
#10
![]() |
|||
|
|||
![]() Paul Krugman - Economist. "Eric Swanson" wrote Forget global warming - think boiling oceans The end is nigh, says Gaia scientist James Lovelock By Mark Ballard Published Monday 16th January 2006 11:59 GMT Humankind will be nearly extinct by the end of the century and there is little we can do but prepare for the worst, says James Lovelock, the scientist famed for his Gaia hypothesis of earth science. "Before this century is over billions of us will die and the few breeding pairs of people that survive will be in the Arctic where the climate remains tolerable," warns Lovelock in today's Independent newspaper. "Each community and nation must find the best use of the resources they have to sustain civilization for as long as they can," he says. His warning reads like the plot outline of a classic science fiction tale like Olaf Stapledon's Last and First Men, in which the rise and fall of not mere civilisations, but species of man is charted over millions of years. It is in fact the plot outline of Lovelock's own book, The Revenge of Gaia, in which he proposes that many of the earth's species will become extinct as global warming gathers its own runaway momentum. But the idea is the same: desperate conditions eradicate humankind and those few people who survive have to start all over again, as though they've thrown an unlucky dice in a game of evolutionary snakes and ladders. He's a sweet old man, Lovelock. At 86, he is still hopeful that the last ten thousand years of civilisation's sustained flowering have not been in vain. As well as "powering down" western civilisation and learning to live on more meagre rations than those to which we have grown accustomed, we should do what we can to preserve our knowledge for future generations, he says. To do this, all the world's accumulated scientific knowledge should be stored away on special, long-lasting print and paper. It is an idea that evokes another classic science fiction tale, George R Stewart's Earth Abides, in which humankind is indeed reduced to a few motley pockets of blinking survivors. The hero - a former geologist, as it happens - tries in vain to preserve the civil traditions and sustain some semblance of scientific progress. The proto-civilisation he helps spawn from the dregs of the last is savage, ignorant and certainly cannot read, even if it did have any interest in reading about the scientific advances of a past civilisation. In other words, unless you have a pass to an underground bunker in the Nevada desert, you have only two courses of action: enjoy it while it lasts or help "power down" our guzzling civilisation so it won't have all been in vain.® -- "We must create a economic crisis in order to ensure that there is no alternative to a smaller government." - Bush - Imprimus Magazine 1995. "We seek to remove resources from the control of the state, thereby starving it." - International Society for Individual Liberty - NeoCon Libertarian. "Throughout his term, Bush has implied tax cuts would starve the government, paying for themselves by causing budget deficits that, in turn, would place heavy pressure on Congress to lower spending." - Jeff Lemieux - Senior Economist - Progressive Policy Institute. "They have an agenda which is to starve the government of revenue. But in order to get it through, they keep on having to pretend that the tax cuts are affordable, and so they've been suppressing the likely cost of everything, including the war on terror." - |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Record Cold In North America - Mother Nature Must Have Ignored Roger's questionable GW statistics ( WARMEST NORTHERN HEMISPHERE NOVEMBER IN 126 YEARS!!! | sci.geo.meteorology (Meteorology) | |||
JUNE HOTTEST IN 126 NORTHERN HEMISPHERE YEARS BY A WIDE MARGIN! | sci.geo.meteorology (Meteorology) | |||
HOTTEST MAY IN 126 NORTHERN HEMISPHERE YEARS! | sci.geo.meteorology (Meteorology) | |||
2nd Warmest April in 126 Northern Hemisphere Years. | sci.geo.meteorology (Meteorology) | |||
Warmest March in 126 Southern Hemisphere Years! | sci.geo.meteorology (Meteorology) |