Глубина, плотность и температура снега

December in our country this year turned out to be surprisingly warm. Our forecasts come true, because we expected a warm winter on the results of observations of the national sign. Forecasters AccuWeather weather service predicted even a warm winter in Moscow. But in the north of the country were expected severe frosts, which is also supported by studies of still pictures. Our Karelian participants reported twenty below. At the same time during the freeze Murmansk region it was not colder than Moscow, total -3 ° C.

Many participants freeze noted that due to thawing and high temperature for winter, they could not be measured in this study required depth, snow density and temperature. But the overall picture without snow brightened our active nature of YaNAO researchers who reported the layer of snow up to 60 cm thick.

In discussing the project team members «GlobiROst» noted that under this layer of snow all the temperature -6 ° C, although on the surface of the snow -20 ° C. So we can see firsthand that the snow is in the nature of thermal insulation for hibernating beneath the plants and animals hiding underneath.

Suddenly noted snowfall participants from Astrakhan, although some of them snow melted directly in the measurement.

Note that in those places where the snow depth was small when viewing the map of snow density at greater depths (which there was not) snow density indicated zero.

Map looks bad - because it has spots on in those places where the measurement was conducted. This is a great lack of maps, extra, do not carry information icons distracting.

Suggest in the comments how to form the map to be more accurate and easier.

Look at the graph constructed on the basis of freeze frame data. What conclusions can be drawn from this graph, depending on the snow temperature of the air temperature?

Would change your conclusions, if the third and fifth left point would be located below (on the line from the second to sixth from left curve points).

Looking at the graph showing the observational data, try to draw a conclusion about whether the snow temperature depends on the temperature?

Looking at the chart, suggest the hypothesis that the temperature at which snow can be moist or wet, but at what can not.

Look at the graph. How do you think if it indicates that the temperature in the single layer depending on the temperature in an adjacent layer?