转移在毫米降水预报预计降雪在cm -地球科学堆栈交换江南电子竞技平台江南体育网页版 最近30从www.hoelymoley.com 2023 - 07 - 10 - t12:29:56z //www.hoelymoley.com/feeds/question/765 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/765 19 转移在毫米降水预报预计降雪在cm中 BHF银行 //www.hoelymoley.com/users/124 2014 - 05 - 04 - t20:38:05z 2022 - 01 - 24 t12:29:14z < p >什么转换函数将在毫米降水预报预计降雪在厘米吗?简单的拇指规则以及更先进的方法可能会感兴趣的。< / p > //www.hoelymoley.com/questions/765/-/766 # 766 14 回答彼得•简颂转移在毫米降水预报预计降雪在cm中 彼得很 //www.hoelymoley.com/users/81 2014 - 05 - 04 - t22:32:22z 2022 - 01 - 24 t12:29:14z

The snow density, which is the "conversion function" you are looking for, of fresh fallen snow varies with atmospheric conditions, vapour saturation and temperature since these parameters determine the snow grain morphology (See this figure from SnowCrystals.com; I leave it as a link for copyright reasons). Densities can vary from as low as < 100 kg m-3 for cold conditions to maybe > 400 kg m-3 for wet snow. This essentially cover the spectrum for a normal snow pack. If you, by your question, are thinking about weather services reporting how much snow will come from a snow fall it is by no means a an easy thing to predict since you may "know" the amount of precipitation from a model, but you will have more difficulties knowing the density of the fallen snow unless you devise a classification based on the atmospheric conditions during snow fall (based on snow crystal structure as in the figure). Hence for many purposes, the snow pack thickness is of little value and most will want the water equivalent of that snow, i.e. how much liquid precipitation it corresponds to.

If snow is falling during drifting conditions, the density may become higher than the falling snow itself would have resulted in. This is because with wind drifting, snow crystals are reduced in size by crushing and can hence be more densely packed.

With time the snow pack will densify due to metamorphic processes. This will cause the snow to decrease in thickness with time. But that is perhaps a different question since yours were about fresh snow.

//www.hoelymoley.com/questions/765/-/6565 # 6565 13 答案由杜米尼克转移在毫米降水预报预计降雪在cm中 杜米尼克 //www.hoelymoley.com/users/4514 2015 - 09 - 19 - t22:06:15z 2015 - 09 - 19 - t22:06:15z < p > @Peter简颂提供了一个更全面的答案,但对于一个快速转换的预期液态水相当于预期积雪深度:< / p > < p > 1英寸液态水= 10英寸的雪,温暖风暴< / p > < p > 1英寸液态水= 20英寸的雪,冷风暴< / p > < p >或< / p > < p > 25毫米= 25厘米,温暖风暴< / p > < p > 25毫米= 50厘米冷风暴< / p > < p >经常一定气候学将在这些数据趋势的一种方法,例如在加州海事等冬季气候会变暖暴风雨所以你通常得到10至15 /科罗拉多州和犹他州的/有大陆气候普遍预计15 - 20 /除非是春末。< / p >
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