James Lawrence Powell

2009 tied for second hottest year since records began

In the Southern Hemisphere, 2009 was the hottest year on record

Earth has been accumulating heat since the 1970s

Mean surface temperature change between the 1950s and 2000s

Warming in Greenland and Arctic has been amplified as models predict

West Antarctica has been warming

A cold December 2009? Depended on where you live. (°C)

January 2010 hottest January in satellite record

2010 starting off as hottest year on record.
Temperatures at 14,000' from satellites. Each line is a different recent year. The top line ending in a small box is 2010. The heavy line is an average for the last 20 years. Make your own chart here.

2009 second hottest year on record in Australia. 2000-2009 hottest decade.
Jan. 13, 2010: Melbourne has hottest overnight temperature in 108 years.

February 2009: Australia suffers worst drought in history; massive wildfires

Western US Drought Continues, December 29, 2009

Colorado River inflow to Lake Powell lowest on record (2009=95%)

Western snow melting earlier in spring

Western wildfire frequency and spring-summer temperatures since 1970

Greenland ice mass shrinking
(Science Magazine; subs. required)

Antarctica losing ice

Mountain glaciers declining worldwide

Retreat of Gangotri Glacier, one of largest in Himalayas, 1780-2001

Arctic sea ice shrinking: Arctic Ocean forecast ice-free by 2030, or sooner

Observed versus modeled Arctic sea ice decline
The IPCC was too conservative.

Arctic air temperature "hockey stick."
The Medieval Warm Period and the Little Ice Age show much less change than last 100 years.

Permafrost melting

Arctic river discharge increasing as ice melts

US plant zones shifting north

Increase in number of days between last and first frost, US Northeast, 1901-2001.
(Red=more days without frost)

California Lakes Warming

Drought in Middle East

Sea level has been rising and continues to rise

Oceans growing more acidic (more negative pH) between 1700s and 1990s as atmospheric CO2 rises and more dissolves in the oceans