## Kelvin Helmholtz Clouds in the Jerusalem Skies

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10
Feb
2007

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05
Feb
2007

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04
Dec
2006

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Often, instead &\lambda;, the sensitivity is expressed through the temperature change &Delta T

04
Oct
2006

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17
Sep
2006

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09
Jul
2006

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29
Jun
2006

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If the temperature is low enough or the humidity high, you can observe condensation (i.e., "fog") forming in your exhaled breath. This calculator estimates whether your exhaled breath will condense, and if so, the range of mixing ratios for which the "fog" will form and the maximum condensed water content (the higher it is, the "thicker" the condensation).

If you're interested, there is a much more detailed explanations of the condensation process.

** Exhaled Condensation Calculator **

Using the above equations, we can calculate whether the exhaled air will condense. Enter the conditions of the outside air (and modify the exhaled air parameters if you wish), to see whether your breath will condense, or not.

If you're interested, there is a much more detailed explanations of the condensation process.

Using the above equations, we can calculate whether the exhaled air will condense. Enter the conditions of the outside air (and modify the exhaled air parameters if you wish), to see whether your breath will condense, or not.

Based on the analysis of whether falling snow will melt as it descends, it is possible to estimate the probability with which falling precipitation will be snow.

Did you ever wonder how can it snow at above freezing temperatures? Well, the naive explanation is that it simple takes time for the snowflakes to melt once they penertrate above freezing air, as they descent downwards to the ground. As it turns out, this is the reaons why hail can fall in warm weather. The hail stones simple fall fast, too fast to let the warm air melt the hail.

With snow flakes, this isn't the case. The flakes fall very slowly and the large surface to volume ratio ensure that the flakes can reach thermal equilibrium with the environment on time scales much shorter than their descend time. So, how can the flakes remain frozen as they fall?

With snow flakes, this isn't the case. The flakes fall very slowly and the large surface to volume ratio ensure that the flakes can reach thermal equilibrium with the environment on time scales much shorter than their descend time. So, how can the flakes remain frozen as they fall?

30
Apr
2006

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A quick review of the cosmic ray / climate link.

Is 20th century global warming due to anthropogenic sources (i.e., greenhouse gasses) or natural variability? Find out here.