Climate scientists discuss what they know about global climate change today, and how they know it.

The Southern Oscillation Index tracks differences in air pressure between the eastern and western sides of the tropical Pacific.

Temperatures measured on land and at sea for more than a century show that Earth's globally averaged surface temperature is experiencing a long-term warming trend.

Why ranking the years is kinda genius, and kinda dumb.

Everyone's asking if the arrival of El Niño guarantees that 2015 will set a new record for warmest global temperature. In his latest blog, Deke Arndt explains why it's possible--maybe even likely--but not guaranteed.

Researchers Offer New Insights Into Predicting Future Droughts in California

According to a new NOAA-sponsored study, natural oceanic and atmospheric patterns are the primary drivers behind California's ongoing drought.

This OSU webinar will provide an overview of how interested stakeholders can obtain information from NOAA’s climate service offices.

USGS Coastal Change Hazards Portal

The U.S. Geological Survey's Coastal Change Hazards portal offers interactive access to coastal change science and data for our nation’s coasts. The portal is designed to aid decision-makers, organizations, or the general public make decisions that involve emergency preparedness, ecosystem restoration, and where and how to develop coastal areas. Anyone interested can explore the interactive portal to find information about historical or future potential storm impacts for a specific coastal area.

State of the Climate in 2013

On July 17, NOAA and the American Meteorological Society released the State of the Climate in 2013 report. A 24-year tradition encompassing the work of 425 authors from 57 countries, the report uses dozens of climate indicators to track patterns, changes, & trends of the global climate system.

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