Gallery Section
Telling the story with pictures

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.

Pollen Searches are on the Rise

Pollen Searches are on the Rise

Online searches for the word"pollen" have gone through the roof this spring, and if you know anyone with seasonal allergies (and who doesn't?) this isn't surprising.

Spring Comes Early Across the U.S.

Spring Comes Early Across the U.S.

The Lower 48 as a whole had an average shift of "first leaf" from March 20 (1951-1980 average) to March 17 now (1981-2010 average): approximately 3 days earlier.