greater over land than over the oceans. Change Over Time. Overall, water vapor in the surface atmosphere has increased over land and ocean relative to the 1970s (specific humidity is rising), while th ...

was 6.84 inches below average. It was "only" the second driest on record for neighboring cities in Arizona like Winslow, Prescott and Payson. As if that weren't dry enough, most of that 0.43 inches of ...

near the long-term average are white. Between January and April 2010, sea surface temperatures in the tropical Pacific Ocean were under the warming influence of a fading El Niño episode. Meanwhile, te ...

have broken out across southwestern Colorado this June, burning thousands of acres in the San Juan National Forest and nearby private lands. The largest fire in southwestern Colorado, dubbed the 416 f ...

Change in Port Heiden, AK. * Home Summary . The Alaska Peninsula community of Port Heiden is experiencing a variety of environmental impacts related to a changing clima ...

on data from NCEI's Climate at a Glance tool. If you'd like to preview how warm September may get in coming decades depending on the sorts of energy choices humans make now and in the future, check ou ...

from the troposphere upwards. Since the major warming, the stratosphere's mark on the atmosphere has been covered up by whatever masterpiece the troposphere has in mind. The negative anomalies in pola ...

experienced one of the most extreme rainfall and flood episodes in recorded history. Some areas in Fort Collins received nearly a foot of rain, resulting in the largest flood event on the Poudre River ...

animation is especially helpful to show the strong correlation among fossil fuel burning and CO2 emissions, atmospheric CO2 concentrations, and temperature. The two different time scales (1000 years ...

5°C above average. To qualify as El Niño conditions, though, we have to see evidence that the atmosphere is responding to the warm sea surface temperatures. In brief, the average atmospheric pattern o ...