Sunday, December 30, 2007

Arctic Sea Ice Recovery November-December 2007

This video was generated from UIUC Cryosphere Today images, showing the record recovery in Arctic sea ice this fall and early winter.

http://arctic.atmos.uiuc.edu/cryosphere/

video

Monday, September 3, 2007

GISS Maps are Skewed

Some empirical evidence that the 1200km GISS data gets rounded up to enhance the appearance of warming. Below are identical graphs of July, 2007 anomalies. First pair is the raw data at 250km rounding, and the second pair is the GISS 1200km rounded data. Three problems which exaggerate warming become obvious.
  1. The rounded maps interpolate red through vast regions where there is no data - like most of Canada and the arctic. There is not a single data point shown in the arctic regions of Canada, yet the rounded map paints a broad brush of red across those regions.


  2. The rounding algorithms push all of the temperature regions upwards. Note the graph of the raw (250km) data shows average temperatures below normal for most of the southern hemisphere


  3. The map projections greatly exaggerate the size of polar regions and give the appearance of large areas of warmth, which are in fact much smaller than they appear.


Figure 1. Raw data rounded to 250km





Figure 2. Most of the area 0-60 south latitude shows below normal temperatures.






Figure 3. GISS rounded data to 1200km. There are vast areas of red which have no data points to back them up. The impression from this map is that July, 2007 was very hot, yet as you can see from the raw data above in figure 1, that was not the case in most places. Most of Antarctica appears bright red, yet this is based on a single location at the south pole where the temperature averaged colder than 65 below zero Farenheit. The Antarctic penninsula was about eight degrees below normal, but that is missing from this map. See figure 1.




Figure 4 Rounded data shows most of the southern hemisphere from 0-60 S latitude as above normal.



Figure 5 shows the rounding errors. Blue regions are latitudes where temperatures were rounded up, and brown regions are rounded down. There is clearly a much greater region of rounded up temperatures than rounded down. Maybe by a factor of 10x.


Sunday, September 2, 2007

Fire and Ice

NOAA SST animation is overlayed with NASA Modis fire data. Note how sea ice regions of Siberia near gas flares (80E) and burning forests (130E) are showing large amounts of melting. Could this be due to soot darkening the ice and making it melt faster?

video

Monday, August 20, 2007

Neanderthals protest shrinking glaciers

Europe - 10,000 BC

Newflash - Neanderthals across Europe stripped down today to protest shrinking glaciers and end of their beloved glacial lifestyle. "We used to have at least 3,000 feet of ice here, but global warming has shrunk that to almost nothing" said Dr. Ugh Handsome, self-proclaimed spokesman for the Neanderthal Allied Spaced Agency. "Sea level has risen and flooded our favorite boneyards."

The recent rise in temperature has been attributed by Dr. Handsome to greenhouse gas emissions from campfires and rotting mammoth carcasses. Dr. Handsome wants to see more human sacrifices to prevent further loss of glacial ice.

Dr. Handsome



Neanderthals pose for naked photo shoot.

Disclaimer - any similarity to more evolved humans is completely coincidental.

Lucy, the Global Warming pin-up girl, is clearly distraught from the disappearance of the glaciers. Either that or she is just chewing on her finger.

Sunday, August 19, 2007

What warming?

If you measure for 75 years, instead of the "inconvenient" 35 years cherry-picked by AGW advocates, it becomes clear that "global warming" is just not happening over the longer term.
http://data.giss.nasa.gov/gistemp/maps/





No warming for the last 10 years

GISS data shows no warming over the last 10 years for June and July. NOAA has made severa press releases about "record" global summer heat during 2007, which would appear to not be backed up by the data. Many parts of the southern hemisphere have had persistently well below normal temperatures for the past three months.






Buenos Aires has been averaging about five degrees below normal for the past three months, and had their first snowfall in 90 years.

http://www.wunderground.com/history/airport/SABE/2007/5/19/CustomHistory.html?dayend=19&monthend=8&yearend=2007&req_city=NA&req_state=NA&req_statename=NA

Thursday, August 16, 2007

Changing Temperature Data

In 1975, NCAR reported that temperatures had declined by greater than 0.5 degrees since 1945. The graph and text below is from Newsweek April 28, 1975

However, they seem to have erased this decline on the GISS site.




What does it mean? I suggest you draw your own conclusions.


Sunday, August 12, 2007

Cool July

While the AGW forces were busy warning us of impending doom from summer heat, and AGW terrorists were busy shutting down Heathrow Airport - nature was not cooperating. Temperatures were exceptionally cold in the Southern Hemisphere and plenty of cool air in the northern hemisphere.

http://www.wunderground.com/history/station/89606/2007/7/12/MonthlyHistory.html





Saturday, August 11, 2007

NASA maps show the earth is cooling

I was looking at the GISS site this morning and discovered a great feature - you can plot temperature trends. During the 21st century, the GISS data shows worldwide temperatures have been generally been neutral or declining as seen in the figures below. Europe, central Canada, Alaska, the US southwest and much of the ocean area have shown a trend towards lower temperatures. Parts of Canada have cooled several degrees since 2000. Only a few isolated places showed strong warming trends.






To generate the plots yourself - go to http://data.giss.nasa.gov/gistemp/maps/


and use the settings shown below, with different projection types.






Below are the same plots with only anomalies greater than 0.5 degrees shown. Tough seeing any indication that the earth is warming, and this data is directly from Dr. James Hansen's web site. It might also be noted that the data only goes through 2006. The large warm bands in the Atlantic and Pacific have since disappeared, so next year's plot will be even more damning to AGW theory.


To see additional cooling during 2007 - follow this link-

http://www.youtube.com/watch?v=GDs50GEcuDw

Tuesday, August 7, 2007

Correcting global warming maps

The NOAA map below is in the format normally used to represent global temperatures. It is a Miller Cylindrical Projection which shows the entire earth in a single image. This format is convenient but greatly exaggerates land areas at high latitudes. The exaggeration can be calculated as 1/cos(latitude) .

There are two other problems with this map which make it misleading.

  1. The base period starts at 1971, which is a temperature minima. In the 1970s climatologists were warning of an impending ice age, due to rapidly cooling temperatures.
  2. The sensitivity is too high. The data set is not large enough to make meaningful comparisons within 0.5 degrees.

http://www.ncdc.noaa.gov/img/climate/research/sst/ani-weekly/5.gif

The maps below correct two of the three of the issues described above. They are equal area projections, and only temperatures which deviate by one degree or greater are shown. As you can see, ocean temperatures are generally close to normal and areas which deviate above and below the norm are about equal in size. Quite a different view of the world from what global warming alarmists would have you believe.