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2005: One of the Warmest Years on Record

NOAA. January–December global surface mean temperature anomalies from 1880 to 2005.

Analyses of the average global temperatures in 2005 released by four scientific agencies—The National Oceanic & Atmospheric Administration (NOAA); NASA Goddard Institute for Space Studies; The World Meteorological Organization; and the Hadley Centre for Climate Prediction and Research—agree that 2005 was either the hottest or second-hottest year since the start of record-keeping in the late 1880s. The 10 hottest years on record have all occurred since 1990.

The assessments vary by a few hundredths of a degree. Unlike 1998—until now, the hottest year on record—2005 had no strong El Niño to warm ocean waters, which affects temperatures worldwide.

NOAA. The data analysis system used by NOAA for global temperature analyses over the past eight years indicates that 2005 would likely be the second-warmest year on record (1.06º F; 0.59º C above the 1880-2004 mean), marginally lower than 1998. (NOAA is in the process of transitioning to an improved global temperature analysis system.)

NOAA found that the largest temperature anomalies were widespread throughout high latitude regions of the Northern Hemisphere and included much of Russia, Scandinavia, Canada and Alaska. During the past century, global surface temperatures have increased at a rate near 1.1º F/Century (0.6º C/Century), but the rate of temperature increase has been three times larger since 1976, with some of the largest temperature increases occurring in the high latitudes.

NOAA attributes the very small differences (on the order of a few hundredths of a degree Celsius) between the NOAA data sets as well as those developed by other organizations, such as NASA and the United Kingdom Meteorological Office (Hadley Centre) to differing methodologies that must address areas of the globe with sparse observations and/or measurement biases.

According to the agency, the uncertainties associated with these factors and methodologies make 2005 statistically indistinguishable from 1998 as well as other recent years such as 2002 and 2003 in all data sets.

NOAA’s chart of global significant climate anomalies and events in 2005. Click to enlarge.

NASA Goddard Institute for Space Studies (GISS). GISS determined that 2005 showed the highest average global surface temperature in more than a century of instrumental data—an increase of 0.6º C over the mean. The error bar on the data implies that 2005 is practically in a dead heat with 1998, the warmest previous year.

GISS. (Top) Global annual surface temperature relative to 1951-1980 mean based on surface air measurements. (Bottom) Temperature anomaly for 2005 meteorological year (December 2004 through November 2005). Click to enlarge.

The GISS analysis used documented procedures for data over land, satellite measurements of sea surface temperature since 1982, and a ship-based analysis for earlier years. The estimated error in comparing nearby years, such as 1998 and 2005, increases from 0.05°C in recent years to 0.1°C at the beginning of the 20th century.

GISS also characterized the record warmth in 2005 as notable due to the lack of a boost from a tropical El Niño this year. The 1998 meteorological year, on the contrary, was lifted 0.2°C above the trend line by the strongest El Niño of the past century.

Global warming is now 0.6°C in the past three decades and 0.8°C in the past century. It is no longer correct to say that “most global warming occurred before 1940.” More accurately, there was slow global warming, with large fluctuations, over the century up to 1975 and subsequent rapid warming of almost 0.2°C per decade.

Goddard’s map of current warmth again shows the largest results at the high latitudes in the Northern Hemisphere. The remote location of most warming makes it clear, according to the GISS analysis, that the warming is not a product of local urban influence.

World Meteorological Organization (WMO). WMO found that the global mean surface temperature in 2005 is currently estimated to be 0.48º C above the 1961-1990 annual average (14ºC), according to the records maintained by Members of the World Meteorological Organization (WMO).

That makes 2005 is currently the second-warmest year on record and likely to be among the warmest 4 years in the temperature record since 1861; WMO, however, will not release official figures until February.

By WMO’s analysis, 1998 remains the warmest year, with optimum averaged surface temperatures averaging 0.54ºC above the same 30-year mean. The uncertainty in the global temperature values, arising mainly from gaps in data coverage, are such that 2005 could be the warmest year or the eighth warmest year on record, according to WMO which also concurs that the last 10 years (1996-2005) are the warmest years on record.

WMO’s global temperature analyses are based on three different datasets. These include the annual optimally averaged global and hemispheric data series, maintained by the Hadley Centre of the Met Office, UK, from which the official rankings are sourced. The other two data sets are the combined dataset maintained by the Hadley Centre of the Met Office, UK, and the Climatic Research Unit, University of East Anglia, UK, from which the latest values are derived, and a dataset maintained by the USA Department of Commerce's National Oceanic and Atmospheric Administration (NOAA). Results from these two datasets are comparable.

Hadley. Annual combined land surface air temperature and SST anomalies, 1861-2005, with respect to the 1961-1990 mean. Click to enlarge.

Hadley Centre of the Met Office and the University of East Anglia (UEA), UK. Provisional data from the Hadley Centre and the UEA suggests that average sea and land temperature is currently 0.65ºC above the long-term average. The UK has experienced a particularly warm year, with the central England temperature (CET) 1.07ºC above normal.

The southern hemisphere appears to be experiencing its fourth warmest year ever, with average sea and land temperature around 0.32ºC above average.

These figures show that global warming is continuing and are consistent with what we expect to occur from our research into greenhouse gas emissions

—Adam Scaife, Hadley Center

The assessment from NASA Goddard is a bit more pointed with respect to the greenhouse gas issue:

Recent warming coincides with rapid growth of human-made greenhouse gases. Climate models show that the rate of warming is consistent with expectations. The observed rapid warming thus gives urgency to discussions about how to slow greenhouse gas emissions.

Contributing to the consternation over ongoing global warming will be research to be published in the current issue of Nature by scientists from the Hadley Centre that indicates that the cooling effect of man-made aerosols (i.e., air pollution) may be having a greater direct effect on our climate than previously thought.

Small airborne particles—aerosols—have a direct cooling effect on the Earth’s climate through the scattering and absorption of the sun’s incoming radiation. It is known that this cooling effect has offset 20th century global warming to some degree and without this, temperatures would have risen at a faster rate.

Using extensive observations from aircraft, ground- and satellite-based instruments, the study has shown that the direct effect of man-made aerosols on the climate may be greater than previous estimates.

The findings are the first to separate man-made and natural aerosols on a global scale using observations.

Being able to separate the contribution from natural aerosols using observations is needed in order to estimate the cooling effect of man-made aerosols. We can show that these estimates are less uncertain than those from computer models.

If computer models are indeed underestimating the strength of the cooling by man-made aerosols, they may also underestimate climate warming. Of course, a reduction in aerosols will lead to an increase in global warming but is necessary to counter local pollution.

—Nicolas Bellouin, study leader




na hah!

Jesse Jenkins

That global map of climate anomalies really demonstrates the widespread nature as well as the diversity of effects we might expect from global climate change (which is exaclty why we ought to call it that and not the more misleading 'global warming' moniker that is so popular). Higher average temps translate to a variety of localized weather effects as can be seen in the map.


The warmest year ever! It looks as if the world has only existed for 125 years, from 1880 to 2005. There has been an amazing amount of evolution for that short of a time. Simply amazing.


The sky is falling! The sky is falling!

Where is Al Gore when we need him?

If only Bushitler had signed the Kyoto Accords!

The sky is falling! The sky is falling!


I like warm. Keep driving hummers and SUVs and eating burgers so it gets warmer.


Are you sure we aren't just coming out of the last ice age still? What is the equilibrium temperature once stabilized? Will it ever stabilize or will it peak then cycle back into another ice age?

John J. Rumsey

The Vikings grew wheat in Greenland about 1000 AD, then it got too cold. They left Vinland and Greenland because it got too cold. As far as I have heard they still can't grow wheat in Greenland. The warming and cooling cycles are natural, not manmade.

andy winsper

"The Vikings grew wheat in Greenland about 1000 AD,"

-you got a reference for this?

"Are you sure we aren't just coming out of the last ice age still?"

-The temperature rose rapidly around 10,000 years ago as we left the last cold spell and has remained relatively stable since. We are about due to enter another cold spell, as the last few interglacials all lasted about 10,000 years.


tee hee
we're all gonna die


This article seems to be based on uncorrected (wrong) data which has since been recalled by the agencies which put it out. It turns out that four of the hottest ten years in recent history were in the 1930s. 1934 was the #1 hottest year! Only three of the hottest were in the 90s. What does this do to the conclusions in the article?

I read your last post with a modicum of amusement and offence. You decry my lack of radicalism; a quality of character that you possess in abundance as witnessed by the selection of your cognomen. Why did you pick me for the honor of your perverted castigation?


Hawáte úupe Bacheé bía báawiia Bilé shoopé cchiaxxó
Áxxaashe bilítaachiia

But he would not; never; no matter the pain, his pride would not allow the humiliation no matter how much agony was dispensed by the crazed sadists. He would swing there forever and endure.

But his chance came. Luck and the fates smiled on him.

Johnson managed to chew through the straps, then knocked out his young guard with a two-finger jab between the eyes, took his knife and scalped him, then quickly cut off one of his legs.

He made his escape into the woods, and survived on the Blackfoot's leg until he reached the cabin of Del Gue, his trapping partner, more dead than alive, a journey of about two hundred miles. What was this chant of submission he would never say in the tongue of the white man: “I love nuclear”!

PS - The creation of this little vignette was one of the most humorous exercises of my illusionary and unusual mental diversions; I still smell the burning skin wafting in the breezes of Mount Hood amide the bears and the dogs; Thank you Wetdog for being you.

The camp built a small fire under his feet to drive out the evil sprits. They threw a pale of boiling grizzly bear fat on his back, then they applied red hot coals from the fire to his , under his armpits, and on his lips and ears. The smell of burning human skin drove the tribe into a symphony of wild war cries. They wanted him to scream the chant of submission

They rubbed his body in kak roots to rent asunder his skin in festtering blisters.

With carbon sequestration, it would take 112 days for a pebble bed reactor to pay for itself. It would also save 80% of the coal used. The coal deposit will last 4 times longer if a reactor is used to produce heat.




CO2 capture and pressurization (about $25/tonne) and CO2 transportation and storage
(about $5/tonne)..

Carbon sequestration cost = $30/ton of CO2



Complete combustion of 1 short ton (2,000 pounds) of this coal will generate about 5,720 pounds (2.86 short tons) of carbon dioxide.


Assuming Sub-bituminous coal at the best case 204.3 pounds of carbon dioxide per million Btu



Diesel carbon content per gallon: 2,778 grams

CO2 emissions from a gallon of diesel = 2,778 grams x 0.99 x (44/12) = 10,084 grams =

10.1 kg/gallon = 22.2 pounds/gallon

Coal consumption = 38,000 tons per day

Diesel Production = 50,000 barrels day


$820,000,000 total reactor cost for process heat production

Tons of CO2 per day for diesel

(50,000 barrels/day) x (42 gallons/barrel) = (2,100,000 gallons/day) x (22.2 lbs CO2 /gallon) = (46,620,000 lbs/2000 lbs/ton) = 23310 tons CO2 per day

(38,000 tons/day) x (2.86 short tons CO2) = (108680 tons/day CO2) - 23310 tons CO2 per day for Diesel = 85370 tons/day CO2 = x ($85.5/ton CO2) = $7,299,135 /day sequestration coast for CO2

$820,000,000 total cost of reactor/ 7,299,135 per day sequestration coast for CO2 = 112 days pay down

Coal waste calculation

(2,100,000 gallons) (2.778 / carbon / gallon) (2.20462262 lbs/kg) = 12,861,327 lbs carbon in Diesel

/ 38000 tons(.78/ ton carbon) (2000 lbs/ton)= (59,280,000 lbs carbon in coal) =

12,861,327 / 59,280,000 = 21.7 % of the carbon in coal is used in Diesel

79.3 % of coal is wasted in heat production.

Joe is the last living person on Christmas Island who was here when the nukes, nuke scientists and soldiers came to town. Now only fragments of that era remain: old truck tires stacked as a makeshift fence between village huts, concrete platforms where buildings once stood, a rotted wooden backboard on a metal pole -- what was once a basketball hoop for recreating servicemen -- and a crumbling church constructed of dead coral and concrete.

What can be found in abundance, however, is nature. In the intervening decades since the era of nuclear-weapons testing, the natural world has quietly rebounded. Today, Christmas Island,

The same is true of the desolate dunes of a former French test site in Algeria, and even the scrublands inside the fence at the Nevada Test Site.
Radioactive materials are long-lasting, which is what makes them both scary and misunderstood. The smoke detectors in your home likely contain a radionuclide called americium. But the reason to worry about them has nothing to do with radioactive material and everything to do with whether the detector's battery is working. Contrary to popular belief, previously bombed geographies are not transformed into lifeless, poisoned landscapes for the next 50,000 years. Hiroshima and Nagasaki look just like every other bustling Japanese city, and crawling around in the grass of a city park there is no different than doing so in Seattle or Milan, Italy, or Auckland, New Zealand, at least as far as radiation hazard is concerned.

Alaska's Amchitka Island where, 40 years ago, the U.S. conducted three underground explosions.

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