Do songbirds pay a price for winter wandering?

In years when winter conditions are especially harsh, birds that depend on conifer seeds for food are sometimes forced to leave their homes in northern forests and wander far from their normal ranges to find enough to eat. ...

When the extreme becomes the norm for Arctic animals

Think of reindeer on Norway's Svalbard archipelago as the arctic equivalent of sloths. It's not a perfect analogy, except that like tropical sloths, Svalbard reindeer move as little as possible to conserve energy.

Inclusion of a crop model in a climate model

Crop models are parameterization schemes that simulate the processes of crop development and production. Their inclusion in climate models can promote the simulation ability of climate models, according to Dr. Jing Zou at ...

Floods suggest national security threat from climate change

The Missouri River floodwater surging on to the air base housing the U.S. military's Strategic Command overwhelmed round-the-clock sandbagging by airmen and others. They had to scramble to save sensitive equipment, munitions ...

Snow may have delayed some blooms for the first day of spring

The first day of spring, when daylight hours begin to exceed nighttime hours, seems especially significant this year—record warm temperatures in the Northwest are marking the change of seasons. But our blooms may be a couple ...

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Winter

Winter is one of the four seasons of temperate zones. Winter officially begins on the winter solstice, being the day of the year which has fewest hours of daylight. Winter ends, and spring begins, on the following equinox. In the Northern Hemisphere, depending on the year, this corresponds to the period between December 20 and 21 and March 20 or 21. Winter is the season between autumn and spring. In many countries in the Southern Hemisphere, including Australia , New Zealand and South Africa, winter begins on 1 June and ends on 31 August.

From a meteorological perspective, winter is the season with the shortest days and the lowest average temperatures. It has colder weather and, especially in the higher latitudes or altitudes, snow and ice. The coldest average temperatures of the season are typically experienced in January in the Northern Hemisphere and in June or July in the Southern Hemisphere.

This text uses material from Wikipedia, licensed under CC BY-SA