搜尋結果
美國
雷雨37°23°27°C- Saturday多雲37°23°
- Sunday雷雨33°13°
- Monday局部多雲27°11°
- Tuesday晴時多雲27°12°
- Wednesday局部多雲27°13°
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v. t. e. In meteorology, the synoptic scale (also called the large scale or cyclonic scale) is a horizontal length scale of the order of 1,000 km (620 mi) or more. [1] . This corresponds to a horizontal scale typical of mid-latitude depressions (e.g. extratropical cyclones).
Climate change. This article is about the ongoing human-induced rise in global temperatures. For natural historical climate trends, see Climate variability and change. "Global warming" redirects here. For other uses, see Climate change (disambiguation) and Global warming (disambiguation).
The United Kingdom straddles the higher mid-latitudes between 49° and 61°N on the western seaboard of Europe. Since the UK is always in or close to the path of the polar front jet stream, frequent changes in pressure and unsettled weather are typical. Many types of weather can be experienced in a single day.
Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. [2] Humidity indicates the likelihood for precipitation, dew, or fog to be present. Humidity depends on the temperature and pressure of the system of interest.
Extreme weather includes unexpected, unusual, severe, or unseasonal weather; weather at the extremes of the historical distribution—the range that has been seen in the past. [1][2] Extreme events are based on a location's recorded weather history.
Weather events have shaped culture and civilizations, with many events lost to history. It is the goal of Wikipedians to document these weather types, events, researchers, and trends. Since the 1960s, weather satellites have helped people around the world see the weather in real time.
The Arctic oscillation (AO) or Northern Annular Mode / Northern Hemisphere Annular Mode (NAM) is a weather phenomenon at the Arctic pole north of 55 degrees latitude. It is an important mode of climate variability for the Northern Hemisphere. The southern hemisphere analogue is called the Antarctic oscillation or Southern Annular Mode (SAM).
