Questions tagged [snow]

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7 votes
1 answer
652 views

Why is the snow line higher in the Himalayas than on the equator?

Excerpt from WP page Snow line: "At or near the equator, it is typically situated at approximately 4,500 metres (14,764 ft) above sea level. As one moves towards the Tropic of Cancer and Tropic ...
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3 votes
2 answers
174 views

Snow on a relatively warm day

Outside my window it's snowing. This isn't so strange, even for the South of England in mid-April. What is surprising is that the ambient air temperatures (according to the Met-Office) are about 7 or ...
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1 vote
1 answer
147 views

Why does Japan get so much snow?

Japan seems to get a surprising amount of snow in winter, compared to other places that are as cold or colder. The snow seems to be concentrated on the west side of the country, which suggests the ...
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  • 549
1 vote
1 answer
77 views

Where to find reliable snowfall rate data?

Would you please let me know where I can find/download reliable snowfall rate datasets? I am looking for multiple weather stations (in different regions) or field measured data, that contain both ...
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3 votes
2 answers
131 views

How does salting roads help prevent ice?

What kind of salt is used to keep roads from getting icy and how does it work? Why does ice get thick in some places and other nearby places there is no ice?
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  • 330
1 vote
0 answers
28 views

Looking for info on a very heavy snow that fell in Airdrie AB in May of about 1992

I have been looking on the internet and can't find the title subject. Three friends and I spent 2 days snowed in a strangers house in Airdrie AB during May , about 1992. We are talking about close to ...
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6 votes
2 answers
873 views

What is the name of this landform?

These are from the movie Insomnia. Also available in this video from 4 seconds to 8 seconds. What is the name of this landform? Are these just snow on Lapies? or These are some form of glaciated ...
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  • 335
0 votes
1 answer
47 views

Average Snowfall for Snowy Places?

I just moved to Wisconsin, so my family is throwing snow statistics at me. But it seems to me that the most meaningful average US snowfall statistic isn't available (or easy to find). The average ...
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1 vote
0 answers
22 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?
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5 votes
0 answers
130 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 ...
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  • 151
2 votes
1 answer
56 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 ...
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  • 121
1 vote
1 answer
469 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 ...
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  • 109
1 vote
1 answer
107 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 ...
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  • 109
5 votes
1 answer
103 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 ...
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2 votes
0 answers
81 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'...
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  • 109
9 votes
1 answer
109 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 ...
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3 votes
1 answer
303 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 ...
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0 votes
1 answer
61 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 ...
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  • 109
3 votes
1 answer
74 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 ...
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  • 109
3 votes
0 answers
73 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 ...
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2 votes
1 answer
467 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 ...
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3 votes
0 answers
97 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 ...
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  • 373
5 votes
1 answer
281 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....
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  • 153
1 vote
0 answers
90 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 ...
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  • 11
5 votes
2 answers
1k 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 ...
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5 votes
2 answers
161 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 ...
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  • 395
-2 votes
1 answer
112 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 ...
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  • 25
3 votes
0 answers
244 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 ...
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  • 395
5 votes
3 answers
11k 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?
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2 votes
2 answers
926 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!
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  • 395
7 votes
0 answers
49 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. ...
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5 votes
0 answers
54 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.
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  • 151
3 votes
0 answers
41 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 ...
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3 votes
3 answers
222 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 ...
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  • 275
9 votes
4 answers
11k 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 ...
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3 votes
0 answers
53 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. ...
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5 votes
1 answer
165 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 ...
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5 votes
1 answer
84 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 ...
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4 votes
2 answers
275 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 ...
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12 votes
2 answers
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?
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11 votes
2 answers
335 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 ...
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1 vote
1 answer
363 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: ...
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  • 195
5 votes
2 answers
6k 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. ...
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  • 175
11 votes
1 answer
674 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 ...
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15 votes
2 answers
8k 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 ...
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  • 6,208
12 votes
1 answer
588 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 ...
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27 votes
4 answers
3k 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 ...
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15 votes
1 answer
570 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. ...
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19 votes
2 answers
36k 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.
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  • 1,662
46 votes
5 answers
18k 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 ...
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