下降风(Katabatic wind,Katabatic 源自希腊语 katabatikos,意思是下降),又可称下坡风, 一种在谷地形成的局部性下坡风。夜间山脊的地表空气从高处流向谷底,下坡风也从山区流向附近的低地。钦诺克风(Chinook,落基山脉东坡的温暖干燥风)和欧洲阿尔卑斯山的焚风是一种暖下降风。密史托拉风(Mistral,法国隆河谷地的一种凛冽北风),是一种冷下降风。
南极地区最主要的气候特征—下降风(Katabatic wind)就是由于倾斜地形近地面层的空气辐射冷却而引起的,这种下降风对整个南极大陆的气候产生很大的影响.
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The pressure SAO signal performs weak at the strongest katabatic wind zone andstrong at the coast and the interior plateau, with the obvious three-wave structure for its annualoscillation.3.
气温的SAO信号强度和振幅均由沿岸向内陆快速增大,气压的SAO信号强度在强下降风区最弱,沿岸和内陆较强,并且其年振荡信号存在着明显的三波结构。
参考来源 - 南极中山站至Dome·2,447,543篇论文数据,部分数据来源于NoteExpress
最近的模型的贡献在于,它显示了厄尔尼诺现象的风在使海平面上升的同时,也向西方发出了海平面下降的信号。
The contribution of the recent model is to show that the winds of an El Nino, which raise sea level in the cast, simultaneously send a signal to the west lowering sea level.
事实上,在太阳风——一股不断从太阳上吹落的带电粒子流——的影响下,太阳的质量一直在下降。
Actually, the Sun is constantly losing mass through the solar wind, a stream of charged particles constantly blowing off the Sun.
分析结果的降幅巨大,但非空穴来风:南非科学家最近说,该地区2080年谷物产量将下降50%。
These falls are large but not unlikely: scientists in South Africa recently said the region could see a 50% fall in cereals productivity by 2080.
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