Researchers decode key airflow pattern impacting global climate

The Hadley circulation is a key atmospheric circulation pattern in the tropics. It helps even out the temperature between the equator and the poles by moving energy and momentum toward higher latitudes. However, recent studies ...

Ponderosa forests struggle in the face of Southwest megadrought

Ponderosa pine trees are one of the most ubiquitous conifer species in western North America, extending from southern British Columbia all the way down to northern Mexico. In the American Southwest, winter snowmelt and summer ...

Confirmed: Global floods, droughts worsening with warming

The intensity of extreme drought and rainfall has "sharply" increased over the past 20 years, according to a study published Monday in the journal Nature Water. These aren't merely tough weather events, they are leading to ...

Climate simulations redefine causes of North American monsoon

On average, western Mexico and the American Southwest receive half their rainfall for the year between July and September. The deluge is due to the weather pattern known as a monsoon—but according to a new paper by University ...

Climate change could revive medieval megadroughts in US Southwest

About a dozen megadroughts struck the American Southwest during the 9th through the 15th centuries, but then they mysteriously ceased around the year 1600. What caused this clustering of megadroughts—that is, severe droughts ...

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