Welcome to ESRL

The NOAA Earth System Research Laboratory (ESRL) pursues a broad and comprehensive understanding of the many physical, chemical and biological processes that comprise the Earth system to better predict their behavior from minutes to millennia on local to global scales. Learn more

Explore Our Divisions

Chemical Sciences Division

Chemical Sciences Division

Research to advance understanding of climate, air quality, and the stratospheric ozone layer.

Global Monitoring Division

Global Monitoring Division

Taking the pulse of the planet with accurate, long-term, global observations and analyses to advance understanding of the Earth system.

Global Systems Division

Global Systems Division

Making forecasts better through applied research and directed development.

Physical Sciences Division

Physical Sciences Division

Research to improve observations, understanding, modeling and predictions of weather, water, and climate extremes.