Questions tagged [snow]
The snow tag has no usage guidance.
43
questions
1
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0answers
14 views
Snowmelt erosion in USLE?
Is there any way to compute snow-melt erosion with Universal Soil Loss Equation? How can I change rainfall erosivity factor to snow-melt erosivity?
0
votes
0answers
15 views
Do snow and ice have different temperatures at their interface?
tl;dr: For snow on top of ice, is the temperature at the base of the snowpack always (practically) the same as the temperature at the top of the ice?
I was trying to understand how the thermodynamics ...
3
votes
0answers
58 views
How high could snow form on a mountain?
I was reminded recently of a moment in the Eragon books where the main characters see a "tall" mountain range, and then after a minute realize that the white sky stretching up above them is just ...
2
votes
1answer
35 views
Where can I find a list of snow fall recording stations in my zip code?
Where can I find the locations on snow fall recording stations in a particular United States county or zip code? Is there a way that I can find an hour by hour recent history of snow fall? Hour by ...
1
vote
1answer
206 views
How to extract lat-lon from MOD10C2 hdf data in matlab?
We can import and read all given bands/parameters of MOD10C2, lat and lon is not given as separate band rather embedded with other bands. How we can extract from MOD10C2 hdf data in matlab.
Similar ...
1
vote
1answer
85 views
How to figure the MODIS snow cover against different elevation zones?
I am working on MOD10C2 (8days snow cover), when I clip the MODIS snow cover against different zones of elevation the results was against general trend .i.e. the higher elevation was showing lower ...
5
votes
1answer
61 views
Why is not snow melting in Ladakh at a rapid pace
I am a novice and thus would like you not to mind too much if the answer to my question seems "obvious" to you.
I heard that in the cold desert of Ladakh, if you keep your face in sunlight and legs ...
2
votes
0answers
71 views
Which software is easiest to use to create plots like these? [closed]
There seems to be many options for a single problem, but each with different approaches and complications, and that makes is confusing and time consuming for this beginner to work out which to use. I'...
7
votes
1answer
70 views
How much of arctic ice is from snow fall versus frozen sea water?
How much of arctic ice is from snow fall versus frozen sea water? I presume arctic ice comes from both sources.
Is there a way to tell how the ice was formed? In other words, if you made a core ...
3
votes
1answer
167 views
Is there a maximum size for a single snowflake?
Just based on my previous experiences a wetter snow, in general, has larger flakes. Some online sources say that raindrops do have a maximum size before they start to break apart when surface tension ...
0
votes
1answer
28 views
How to calculate the snow cover area from satellite data in better and efficient way?
Satellite retrievals contain cloud cover, biases e.t.c which is the main challenge to prepare the data for further analysis.
After all, how we can efficiently calculate the snow cover and its ...
3
votes
1answer
66 views
What is the better way to deal the missing and negative cells of satellite snow cover data
Daily and monthly MODIS snow cover L3 data has downloaded, next to deal with missing and negative cells.
Different types of interpolation are being used to fill the missing cells. I want to fill the ...
2
votes
0answers
62 views
Snow under Siberian High
The Siberian High is a very strong anticyclone present over Siberia in the winter. Cities like Irkutsk lie at its very center, yet Irkutsk has 18-20 days of snow per month in the winter. Shouldn't we ...
2
votes
1answer
300 views
Does the snow come from local moisture or transported moisture?
Currently there is a snow storm coming from Europe over the UK. This is drastically dropping the temperature and making it snow lots.
Is the snow coming from moisture that has been brought over from ...
3
votes
0answers
96 views
How can snow be falling with consistent above freezing temperatures? [duplicate]
I'm a keen skier, and I've often been happily surprised by snow fall despite temperatures of 1 or even 2 °C.
After some research I found that the explanation relies in assuming that these above ...
5
votes
1answer
186 views
Can I use radar data to estimate snowfall, or is there a better way?
The problem: There are lots of websites that provide snow forecasts for various ski resorts. The area of interest to me is Japan, specifically the Nagano area, where I use snow-forecast.com and www....
1
vote
0answers
69 views
Missing Data in GSOD Data
I been accessing daily historical NOAA GSOD data through Google BigQuery. I am interested in long term time series of snow, precipitation, and to a lesser extent temperature for areas around the Volga ...
2
votes
1answer
567 views
'River-effect' snow
Earlier this year 'river-effect' snow was reported in the Quad Cities (Western Illinois) along the Mississippi River. Per the local news report:
According to Andy Ervin, a Meteorologist with the ...
5
votes
2answers
113 views
Is there a minimum snow depth to be considered as presence of snow?
I want to create a variable "snow cover" with values presence/absence of snow for different weather stations (to work later with NDSI from Landsat images with a pixel size = 100 m). I got snow depth ...
-2
votes
1answer
88 views
Antarctica Exploration [closed]
Which parts of Antarctica are unexplored? What about the underwater world of Antarctica? Specifically, what information do we have about it?
What is so interesting about exploring Antarctica when ...
2
votes
0answers
102 views
How to handle leap years when working with environmental conditions time series?
I have a time series of snow and temperature and I want to analyze changes over time for a specific period of time: 15 April - 15 June. In the perpetual calendar April 15 is the day 105 and in a leap ...
5
votes
3answers
3k views
Is snow less likely to appear at a coastal area?
Is it true that a coastal area is less likely to see snow compared with inland area nearby? If so, what are the reasons?
2
votes
2answers
453 views
What's the difference between snow cover and fractional snow cover?
What's the difference between snow cover and fractional snow cover? Are they kind of synonyms? What would be a definition of fractional snow cover?
thanks a lot!
6
votes
0answers
46 views
Effect of snow on BVOC emmisions of plants/trees
Plants re-emit a substantial fraction of their assimilated carbon into the atmosphere as Biogenic Volatile Organic Compounds (BVOCs) that affect the chemical and physical properties of the atmosphere. ...
4
votes
0answers
41 views
calculation of coefficients for snow melt DDF
How can I obtain coefficients for Degree-Day Factor method estimating snowmelt rate?
Any reference would be appreciated.
2
votes
0answers
37 views
Phase conversion of snow and ice due to irradiation versus melting
A few years ago another question touched on the relative rates of sublimation versus melting in terms of snow and snow pack disappearance.
What was unusual about the answer is the huge range of ...
3
votes
3answers
192 views
Had the climatologists predicted climate change as the deviations to both extremely cold and hot temperatures before?
Recently I read that the current extreme snowfall in northern temperate climate is caused by the increased evaporation due to the global warming.
Had any scientist predicted these extremes before ...
9
votes
3answers
4k views
Temperature rise when snowing
Why does the temperature rise when it is snowing? Is it due to:
cloud cover
snow requires humid air and warmer air can carry more humidity (so in this case it would be the other way around, i.e. it ...
2
votes
0answers
48 views
What kind of storm tracks produce snow in the eastern United States?
What storm tracks are favorable for snow in the eastern United States? Articles like this one on a winter storm in the Northeast in 2011 indicate that storm tracks are important in snowfall amounts. ...
5
votes
1answer
143 views
Snow thunderstorms
So why are snow thunderstorms so rare? I researched a bit and it said that it is because there is less moisture in the air. But the percentage of thunderstorms while raining seems much higher than the ...
5
votes
1answer
71 views
snow modelling using raster data with different resolution
I am trying model to some snow processes for the whole US.
I do have daily climate forcing time series for a 1 x 1 km raster in a Lambert Conformal Conic Projection (netCdf format). The MODIS snow ...
2
votes
1answer
86 views
Why can't radar's decibel scale be used to determine the intensity of snowfall?
According to the FAA's Aviation Weather Services advisory circular,
Values below 15 dBZ are typically associated with clouds. However, they may also be
caused by atmospheric particulate matter ...
12
votes
2answers
2k views
Why snow is white?
Snow is precipitation in the form of flakes of crystalline water ice that falls from clouds. Why is it not another colour?
10
votes
2answers
245 views
Snowing when the actual temperature is around $\small\sf9^o$ Celsius
In Paris, actually, it is snowing smoothly and the temperature, according to many sources, is around $\small\sf{9^o}$ Celsius.
I had always the feeling that snow is possible when temperature ...
1
vote
1answer
208 views
How can we predict if it's raining, drizzling or there is snow fall by using precipitation intensity (inches/hour)?
I was analyzing a dataset in which precipitation intensity(inches/hr) and the type of precipitation was given. For example:
...
5
votes
2answers
5k views
Why doesn't it snow even when it is below freezing?
I know the temperature of a place is determined by various factors, a few of which I can think of are: Altitude, distance from sea, latitude, wind etc.
My question is basically regarding latitude. ...
8
votes
1answer
548 views
Snow from Fire: Could graupel, or even snow, fall from pyrocumulus clouds?
Pyrocumulus clouds often form in areas that experience prolonged fire conditions, particularly forest fires, but are also associated with volcanic eruptions and even nuclear explosions. This question ...
14
votes
2answers
6k views
What is the lowest latitude at which snow has been recorded at sea level?
We have had some stations report snow that have not reported snow in the past 55 years at sea level. I have read that Tampico, Mexico at 22°N is one of the stations that has recorded snow in the ...
11
votes
1answer
419 views
What does the term “Snow Interval” mean?
When looking Weather Station readings from the National Weather Service website, what does the term "Snow Interval (inches)" actually mean? 6 hr and 24 hr readings are obvious, but I can't seem to ...
24
votes
2answers
2k views
What is the steepest surface that can hold snow?
I know it depends on the type of snow (dry or wet) and the rougness of the surface. I'm looking for an approximate rule of thumb answer. Assuming a reasonably smooth surface, at what angle it's likely ...
15
votes
1answer
541 views
What constitutes a blizzard in meterological terms?
Blizzards are most commonly associated with a large amount of snowfall and low visibility. However, snow squalls can induce low visibility whereas a 12" snowfall doesn't have to induce low visibility.
...
13
votes
2answers
24k views
Transfer precipitation forecast in mm to expected snowfall in cm
What conversion functions exist to transfer precipitation forecast in mm to expected snowfall in cm? Simple rules of thumbs as well as more advanced methods would be of interest.
44
votes
5answers
12k views
Why do snowflakes form into hexagonal structures?
Snowflakes are known to form into pretty hexagonal structures. The image below shows a variety of such structures that are possible (although by all means not an exhaustive list):
What is the ...
