Climate Change

A scientific look at global change.
Climate Change Evidence At A Glance
Global Surface Temperature
Data source: NOAA
years
Atmospheric CO2
Data source: NOAA
thousands of years ago
Sea Level
Data source: CLS/Cnes/Legos
years
Arctic Sea Ice (September)
years
Surface Temperature CO2 Sea Level Sea Ice
Climate Change News
By Chris Dolce
August 20, 2015
July 2015 was the warmest month on record for the earth dating back to January 1880.
August 17, 2015
Food production "shocks" will likely go from something that happens once a century to something that happens every 30 years or so, a new report says.
By Jon Erdman
August 16, 2015
For the second time this summer, all-time heat records are being set.
Feeling Skeptical?
Climate Change Facts
Local Climate Change
Temperature Precipitation Snowfall*

Climate Change Blogs

July 2015: Warmest Month on Record Globally
By: Dr. Jeff Masters
Published: August 20, 2015
July 2015 was the warmest single month in 1627 months of global records that go back to January 1880, said NOAA's National Centers for Environmental Information on Thursday. The globally averaged temperature above both land and ocean surfaces was 1.46°F (0.81°C) ahead of the 20th-century average. This trumps the record for any month that was set in July 1998, surpassing that value by 0.08°F (0.14°C).
Record Ocean Temperatures Threaten Hawaii's Coral Reefs
By: Dr. Jeff Masters
Published: July 24, 2015
Record warm sea surface temperatures in Hawaii's waters threaten to bring a second consecutive year of record coral bleaching to their precious coral reefs this summer. According to NOAA, ocean temperatures in the waters near and to the south of the Hawaiian Islands were 1 - 2°C (1.8 - 3.6°F) above average in June, which was the warmest these waters have been since record keeping began over a century ago.
Fewer but Stronger Global Tropical Cyclones Due to Ocean Warming
By: Dr. Jeff Masters
Published: July 23, 2015
The observed 0.3°C (0.5°F) warming of Earth's oceans over the past 30 years has made more energy available to tropical cylones, leading to an average increase in wind speed of about 3 mph (1.3 m/s) for each storm--but 6.1 fewer named storms globally each year because of the warmer oceans.
Wunderground's Climate Change Position
Based on the evidence, more than 97% of climate scientists have concluded that human-caused climate change is happening. Climate change is already causing significant impacts to people and ecosystems, and these impacts will grow much more severe in the coming years. We can choose to take economically sensible steps to lessen the damage of climate change, and the cost of inaction is much higher than the cost of action.
Climate Summary
State of the Climate
July 2015: Warmest Month on Record Globally

July 2015 was the warmest single month in 1627 months of global records that go back to January 1880, said NOAA's National Centers for Environmental Information on Thursday. The globally averaged temperature above both land and ocean surfaces was 1.46°F (0.81°C) ahead of the 20th-century average. This trumps the record for any month that was set in July 1998, surpassing that value by 0.08°F (0.14°C).

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