Gallery Section
Telling the story with pictures

Frost Free Season is Getting Longer

Frost Free Season is Getting Longer

All regions of the continental U.S. have seen the frost-free season, defined as the stretch between the last below-32°F reading in the spring and the first in the fall, grow longer.

Rising CO2 Increases the Size of Poison Ivy Plants

Rising CO2 Increases the Size of Poison Ivy Plants

Better grab your calamine lotion. More CO2 means bigger poison ivy plants.

More CO2 = More Pollen

More CO2 = More Pollen

Climate change has increased pollen counts and the length of the pollen season, trends that are expected to continue through mid-century.

Spring is Arriving Earlier in the U.S.

Spring is Arriving Earlier in the U.S.

Spring is arriving earlier across the U.S. by an average of three days.

Autumn is Falling Back

Autumn is Falling Back

Foliage color and timing has been starting later, on average, in a warming world.

Poison Ivy in a Warming World

Poison Ivy in a Warming World

Scientists say increased CO2 emissions are making poison ivy worse.

Significant Events for Spring 2013

Significant Events for Spring 2013

The highlights of NOAA's 2013 Spring climate summary.

Autumn is on the Move

Autumn is on the Move

If it seems like autumn leaves are taking longer to change color, you're not imagining things. Over the past 25 years, the onset of autumn has shifted.