El Niño
El Niño Southern Oscillation (ENSO) is a large-scale ocean-atmosphere interaction in the tropical Pacific Ocean. ENSO consists of oscillations between a warm phase (El Niño) and a cool phase (La Niña).
Science
Science Primers
Forcing and Fingerprinting
The IPCC recently concluded (with 95% certainty) that humans are responsible for over half of the warming we’ve experienced since 1951. Their best estimate is that we’re responsible for all of the warming, and we could even be responsible for …
Science
Long-term Look at Climate Change
It has fallen upon climate scientists to develop the technical sophistication and to employ the research methods necessary to understand climate variables, how they change across time and space, and the degree of human-caused climate disruption.
Archive, Science Primers
Dr. Mike Mann on Climate Models
Noted climate scientist Michael Mann discusses the scary reality that human greenhouse gas emissions are currently overcoming natural forcings, as well as the current confusion around surface warming, climate models, and natural variability.
The IPCC
Working Group II
Working Group II (WGII) covers the impacts and vulnerabilities caused by climate change and discusses pathways for adaptation.
The IPCC
Working Group I
AR5 reflects advances in science that point to increased levels of certainty on issues already raised and provides greater detail on measurements and projections.
News
New Record for Temperature Whiplash
U.S. temperature extremes in 2014 have been exceptional—with record heat in the West and cooler than average temperatures in the East—and many scientists think climate change may be contributing. Temperature extremes occur when regions experience temperatures at the top or bottom 10% of the historical range of recorded values.
Extreme Weather
Typhoon Haiyan
Super Typhoon Haiyan (called Yolanda by many in the Philippines) struck land on Thursday November 7th. It may have been the strongest tropical cyclone on record to make landfall.
Basics, Communication Basics
Debunking the Top 10 Climate Change Myths
Mythbusting: an unfortunately necessary part of climate communications There are a number of myths that opponents of climate action use to make their case. These attacks on climate science are repeated often, despite their innacuracy. Here's a quick rebuttal to …