Green infrastructure mimics natural processes and can mitigate impacts of urban development and climate change, but uncertainties remain about its effectiveness. A new open-source tool may help decision makers.

The amount of carbon dioxide in the atmosphere has risen more than 45 percent since people began burning fossil fuels for energy. It hit a new high of 414.7 parts per million in 2021. ...

Since the start of the satellite era in 1979, the extent of ice covering the Arctic Ocean at the end of summer has shrunk by more than 40 percent. ...

Since 1980, the cumulative ice loss from a reference network of mountain glaciers is equivalent to slicing an 87-foot-thick slab off each glacier. The rate of loss is roughly doubling each decade. ...

In 2021, the combined heating influence of all human-produced greenhouse gases was 49 percent higher than it was in 1990. ...

Beneficial out in the open ocean, the seaweed has been coming shore in much larger than normal amounts over the past decade.

On Friday, April 7, 2023, NASA launched the Tropospheric Emissions: Monitoring of Pollution (EVI-1) (TEMPO) satellite mission from the Kennedy Space Center. TEMPO will provide high resolution air quality data on an hourly basis across North America.

The National Integrated Heat Health Information System (NIHHIS) will hold its second annual meeting April 25–27, 2023. Registration is now open.

Registration is open for the Climate Variability and Predictability Program webinar series on Decadal Climate Variability and Predictability.

Since the start of the Industrial Revolution in 1750, the ocean has absorbed 20–30 percent of the new carbon dioxide emissions. That has mitigated rising atmospheric temperatures but increased ocean acidification. A new data set spanning 1750–2100 predicts future ocean chemistry.