Climate Change

A scientific look at global change.
Climate Change Evidence At A Glance
Global Surface Temperature
Data source: NOAA
Atmospheric CO2
Data source: NOAA
thousands of years ago
Sea Level
Data source: CLS/Cnes/Legos
Arctic Sea Ice (September)
Surface Temperature CO2 Sea Level Sea Ice
Climate Change News
By Bobby Magill, Climate Central
December 8, 2015
Renewable energy and improvements in energy efficiency across the globe may have paid off in a big way this year.
By Eric Chaney
December 4, 2015
A Peruvian farmer is suing a German energy company over an impending disaster in the Andes Mountains.
By Eric Zerkel
November 30, 2015
Five important things to know about the climate talks in Paris.
Feeling Skeptical?
Climate Change Facts
Local Climate Change
Temperature Precipitation Snowfall*

Climate Change Blogs

Absurd January Warmth in Arctic Brings Record-Low Sea Ice Extent
By: Dr. Jeff Masters
Published: 4 février 2016
This winter’s freezing season in the Arctic is falling short. The extent of Arctic sea ice this week is hovering near record-low values for early February, based on observations that extend back to the start of satellite monitoring in 1979. Data from the National Snow and Ice Data Center (NSIDC) shows that last month had the lowest overall Arctic sea ice extent of any January in the satellite record. Hand in hand with the skimpy ice cover, temperatures across the Arctic have been extraordinarily warm for midwinter, also setting January records.
Yearly, Monthly Heat Records Dissolve In 2015's Global Onslaught
By: Dr. Jeff Masters
Published: 21 janvier 2016
The year 2015 ended in spectacular fashion, winding up as the warmest year in more than a century of recordkeeping--and it’s wasn’t even close to a photo finish. NOAA calculated that the average global temperature across both land and ocean surfaces for 2015 was 0.90°C (1.62°F) above the 20th-century average of 13.9°C (57.0°F). This makes 2015 the warmest calendar year, as well as the warmest of any 12-month period, in global temperature data going back to 1880. In a fitting capstone to a sizzling year, December 2015 was the warmest calendar month on record.
Warm, Wet Year for U.S.; Record Heat in South Africa; Tropical Storm Pali Intensifies
By: Dr. Jeff Masters
Published: 8 janvier 2016
It was the warmest and wettest December on record for the contiguous U.S. in more than a century of recordkeeping, according to data released by NOAA on Thursday. As a whole, 2015 came in as the second warmest and second wettest year on record. All-time record heat is plaguing parts of southern Africa this week, while Tropical Storm Pali--the earliest tropical storm on record for the Central/Northeast Pacific--has strengthened considerably over the last 24 hours.
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
Sixteen National/Territorial All-Time Extreme Heat Records Set in 2015

In addition to being the warmest year on record when averaged over the entire globe, 2015 was also notable for all-time extreme heat records. Sixteen nations or territories tied or set all-time records for their hottest temperature in recorded history in 2015; two (Israel and Cyprus) set all-time cold temperature records.