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 By Andrea Thompson, Climate Central
November 25, 2015
It's virtually certain 2015 will be the warmest year on record, and a new study says global warming is the overwhelming contributor.
By Sean Breslin
November 10, 2015
“We are moving into uncharted territory at a frightening speed," says the World Meteorological Organization secretary-general.
November 6, 2015
Researchers find climate change fingerprints on Hawaii's tropical cyclones and heat in Argentina, Europe, South Korea, China, and repeatedly in Australia.
Feeling Skeptical?
Climate Change Facts
Local Climate Change
Temperature Precipitation Snowfall*

Climate Change Blogs

Carbon Dioxide Bidding Farewell to 400-ppm Benchmark
By: Dr. Jeff Masters
Published: November 20, 2015
The amount of carbon dioxide measured daily in the air at Mauna Loa, Hawaii, may have dipped below 400 ppm for the last time in our lives. This and several other recent milestones serve as a prelude to the upcoming United Nations climate talks in Paris, where plans for major public events have been scuttled in the wake of the November 13 attacks.
Climate Change and Extreme Weather: 32 Takes on 28 Events from 2014
By: Dr. Jeff Masters
Published: November 6, 2015
On Thursday, the American Meteorological Society (AMS) released its fourth annual special issue of the Bulletin of the AMS devoted to studies examining the links between climate change and extreme weather and climate events. New topics this year include tropical cyclones, forest fires, and anomalies in sea surface temperature and sea level pressure. For about half of the events studied in this year’s AMS report, scientists found that human-induced climate change played a measurable role in making the event stronger and/or more likely.
Chapala Slams Yemen: First Hurricane-Strength Cyclone on Record
By: Dr. Jeff Masters
Published: November 3, 2015
Residents of southern Yemen are assessing the damage after Cyclone Chapala brought dramatic flooding to the region on Monday night into Tuesday. With Yemen plagued by civil war, it is difficult to know how extensive the damage from Chapala has been. Chapala was not only the second-strongest cyclone on record for the Arabian Sea, but it was also the longest-lived at Category 3 strength.
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
October 2015: Earth's Warmest Month on Record by a Huge Margin

Earth’s surface temperature has surged high into uncharted territory, thanks to a record-strength El Niño event combined with the long-term rise in temperatures due to human-caused global warming: October 2015 was Earth’s warmest month on record by a huge margin, according to data from NOAA and NASA.