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 Nick Wiltgen
July 7, 2015
The ongoing Northwest heat wave has already earned its place in the history books.
By Sean Breslin
July 6, 2015
Find out which cities are leading the charge to build a more resilient world.
By Brian Kahn, Climate Central
July 2, 2015
For all the drama of trees lighting up like matchsticks, it’s what lurks below the forest that could be a major wildcard for future warming.
Feeling Skeptical?
Climate Change Facts
Local Climate Change
Temperature Precipitation Snowfall*

Climate Change Blogs

Germany Breaks its All-Time Heat Record
By: Dr. Jeff Masters
Published: 6 juillet 2015
Germany broke its all-time heat record on Sunday July 5, when the mercury soared to 104.5°F (40.3°C) at Kitzingen in Bavaria. An even higher reading of 105.4°F (40.8°C) was recorded at the University of Karlsruhe, but this is not considered an official station. Numerous cities in Germany set all-time heat records over the weekend, including Saturday's 100.2°F (37.9°C ) reading at Berlin's Dahlem station.
Pakistan's Deadliest Heat Wave on Record Kills at Least 800
By: Dr. Jeff Masters
Published: 24 juin 2015
The death toll from a brutal heat wave in Pakistan rose to 830 on Wednesday, making it Pakistan's deadliest heat wave in recorded history. Most of these deaths--at least 770--occurred in Pakistan's largest city, Karachi. According to statistics from EM-DAT, the International Disaster Database, Pakistan's previous deadliest heat wave was in 1991, when 523 people died.
A New Take on the Human Factor in Recent Extreme Events
By: Dr. Jeff Masters
Published: 23 juin 2015
Top researchers differ on how much a changing climate might be involved with jet-stream “weirding.” However, there’s no question that sea levels have risen and global temperatures have warmed. Those unassailable facts may serve as the most direct link between climate change and extreme events, according to an article published on Monday in Nature Climate Change.
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
Earth has its Warmest May and Warmest Year-to-Date Period on Record

May 2015 was Earth's warmest May since global record keeping began in 1880, said NOAA on Thursday. NASA rated May 2015 as the 2nd warmest May on record. May 2015's warmth makes the year-to-date period (January - May) the warmest such period on record, according to both NOAA and NASA.

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