相对于空气在当前温度下所能包含的最大水分量，空气中存在的水分量。 气压是大气中空气的重量。它被归纳为标准大气压力 1,013.25 mb (29.9212 inHg)。较高的气压通常与晴朗的天气相关，较低的气压与暴风雨天气相关。 使空气中水分凝结成液态水(例如露水)所需要 ...

As winter settles in, Colorado is finally experiencing the arrival of mountain snow, a welcome change for many residents and visitors. With a Winter Weather Advisory in effect from 8 p.m. on Sunday un ...

As winter approaches, residents of southern Ontario should brace themselves for the first significant snowfall of the season, expected this weekend. A low-pressure system is set to move into the regio ...

The International Monetary Fund has predicted that China's economy will grow 4.8 percent this year, up 0.3 percentage point on what was forecast a year ago, saying it expects the world economy to slow ...