Questions tagged [meteorology]

The study of how the earth's atmosphere works, including weather forecasting. Use this tag for questions about the earth's weather. When asking questions specifically about the atmosphere, also include the [atmosphere] tag.

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5
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2answers
109 views

Would the enthalpy of fusion for melting ice fields be a causative factor for colder winter weather?

Would the enthalpy of fusion for melting ice fields be a causative factor for colder winter weather? As an example, NASA estimated the annual loss of the Greenland ice field 2002-2013 as more than ...
4
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1answer
134 views

How averaging works in GFS model from NOAA?

We have downloaded grib2 files for GFS model from NOAA and extracted irradiance (Downwards shortwave radiation flux) data. Following is a sample output for cordinates at [52.0,4.0]: ...
5
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1answer
185 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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0answers
189 views

Calculation of apparent heating (Q1) and apparent moisture sink (Q2) as defined by Yanai et al. (1972) using NetCDF data?

Please can anyone explain how to calculate apparent heating (Q1) and apparent moisture sink (Q2) as defined by Yanai et al. (1972) using NetCDF data? Please kindly check equation 6(Q1) and 7(Q2) of ...
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0answers
49 views

Want to buy wind speed sensor, small, cheap [closed]

I want to build a small atmospheric sensor setup that will include an anemometer. It doesn't have to be especially accurate but should be small, lightweight and reliable. The part I'm missing is the ...
5
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1answer
113 views

Satellite ocean near-surface air temperature data

For my study, I need to use satellite Sea Surface Temperature (SST) and at the same time I also need satellite air temperature data (Ta) for the first few meters above the ocean. For SST I'll be ...
4
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1answer
31 views

What are the basic rules of how light and seasons affect landscape and objects lighting?

It would probably be a strange question for here but i will shoot it. I want to modify the shaders for Prepar3d the next version of MS flight simulator game. I have ways of interfering with ambient/...
5
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0answers
83 views

What level of heat creates a dust devil?

My understanding is that a dust devil is created when heated air rises rapidly displacing the cooler air above up. My question is, how relatively hot does the patch of air on the ground have to get in ...
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0answers
32 views

Why is wind sporadic in a Boston northeaster?

We are having a tough little northeaster in Boston, USA, right now and one oddity that I notice is the wind pattern. There will be complete calm for 3-5 minutes, then the wind will blow hard in gusts ...
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0answers
90 views

Why do nearby thunderstorms move in different directions?

The image below from the Australian Bureau of Meteorology shows several thunderstorms in southeast Queensland today and the directions they are expected to move. I'm surprised how different these ...
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2answers
386 views

Are weather forecast models more accurate for either high or low temperatures?

The other day our low temperature for the day was ~10 degrees F below our forecast low. I've noticed this before in the winter, especially when temperatures start to go below 0 degrees F (-18 degrees ...
6
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1answer
208 views

Why is cold air fast in an occluded front, but slow in an anti-cyclone?

I've read that cold air moves faster than hot air, for example in an occluded front. But in case of anti-cyclone encountering a cyclone it appears that the cold air of the anti-cyclone moves very ...
4
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1answer
95 views

What is a “tar shower?”

I'm reading about Sodom and Gomorrah on Wikipedia when I come across this: "One such idea is that the Dead Sea was devastated by an earthquake between 2100 and 1900 BCE. This might have unleashed ...
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1answer
70 views

Is there a name for this weather phenomenon?

I was wondering if there was a name for the effect I’ve noticed over a lake in really cold weather. You can see white wisps over it, which I think is mist from the lake rising into the air and ...
10
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2answers
776 views

Can the Bering Sea Rule be used to predict the weather?

Recently, a colleague explained that the recent cold spell in the eastern United States could have been predicted using the Bering Sea Rule. The idea is that 17-21 days after a storm appears in the ...
4
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1answer
126 views

What factors influence cloud height and type?

For example, why do altocumulus clouds fail to form at 6400m in high latitude locations, but will form at this height at a lower latitude? Is it simply an issue of temperature?
5
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1answer
277 views

How do spectral methods work in the context of numerical weather prediction models?

I am broadly familiar with the concept of numerical weather prediction models using various finite methods to solve the primitive equations used in these models, but how do spectral methods work, ...
1
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1answer
234 views

Severe storm predictions: What meteorological considerations go into hazard assessments? [closed]

In the United States the National Weather Service (NWS) Storm Prediction Center (SPC) now has 5 categories for the threat of severe storms. These five categories replaced the previous three ...
3
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2answers
68 views

Looking for fun and illuminating weather visualizations

I'm looking for illuminating and fun weather data visualizations like e.g. EarthWindMap. More specifically, I was hoping to find wind vectors overlayed onto a prognostic chart to visualize how the ...
4
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3answers
923 views

Is there any new water formed on, or brought to, Earth?

I've found 2 sources stating that there is new water being formed on Earth. The first site states that it is coming from hydrothermal vents in the sea floor. The second site is basically saying that ...
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0answers
65 views

Theorist speculate about dozens of loud atmospheric booms across globe

Theorist speculate on the dozens of loud atmospheric booms across globe. Has any recognized institutions offered a plausible explanation as of now?
2
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2answers
435 views

Colder winters along the North American Atlantic northeast

Why are winters along the North American Atlantic northeast coast colder than winters along the North American Pacific Northwest coast?
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0answers
47 views

What software for cloud motion forecasting

I have a large sequence of images in .png (10 second resolution) from sky image system. Is there any inexpensive software for processing images and forecasting cloud motion? I have found out that ...
9
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1answer
4k views

What is the loudest thunder ever recorded (dB) at ground level and where did it occur?

Sound travels fastest through warm air and conditions such as temperature inversions can help to amplify the sound of thunder (source). Conversely, during a thundersnow event the falling, and ...
3
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2answers
45 views

How can I account for rainfall effects on air pollution?

How can I adjust black carbon surface mass air pollution concentrations (ug/m3) for rainfall effects? Specifically, I have monthly and daily averaged black carbon pollution data (i.e. 2.0ug/m3 Jan ...
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3answers
1k views

Do high pressure systems draw air towards them?

I refer to the this very recent article, which quotes Andrew Watkins (Manager of Climate Prediction Services at the Australian Bureau of Meteorology). My understanding has always been that air flows ...
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0answers
65 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
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1answer
266 views

Derive Reference Potential Evapotranspiration from Potential Evapotranspiration

I'm working on a project in Rajasthan, India involving modelling water supply and demand in a catchment. For this, I am working with WEAP which has modules for estimating groundwater recharge using a ...
7
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1answer
766 views

What is the consensus among geologists about climate change being caused by humans?

I'm terribly frustrated with the way that climate change has been debated in Europe. I live in the Netherlands and members of one of the biggest parties here, the Party for Freedom (PVV), frequently ...
2
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1answer
555 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 ...
4
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0answers
124 views

How do we calculate an average temperature for the air above a specific point from weather data?

I'm doing a school project on cosmic rays (using data from the HiSPARC database), and we need to be able to calculate the average temperature of the atmosphere above specific cities on a specific date ...
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1answer
35 views

Haze in Arizona / Grand Canyon that gets more apparent around noon - smog or something else?

I just came back from the Grand Canyon, and it's awesome. However, my friend and I did notice something - it seems that there's some kind of haze in the far horizon that seems worse as the sun rises ...
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1answer
44 views

Infared & Thermal imaging

Let's say I have an infared picture of the earth from the space station, is it possible to measure the temperature of the picture area, and thus convert the infared picture I have to a thermal picture?...
8
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1answer
180 views

Regarding compression, shuffle filter of netcdf4

I read the doc but still have no idea about what are the advantages to enable or disable the shuffle, what level [0-9] of compression is optimal, what's the best choice of chunk size?
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3answers
280 views

Websites providing visual weather data

What websites are there providing visual weather data? The question actually contains the past and future weather. The purpose is for this question is to provide a list of easy-to-access websites that ...
3
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2answers
802 views

What was the density and composition of Earth's atmosphere during the Cretaceous warmest period?

There was time during the age of dinosaurs when the polar regions were ice free. The earth was obviously much warmer but a run-away greenhouse effect did not occur. This was most likely because the ...
2
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2answers
10k views

Why was the sky SO yellow?

Today, I was coming back from music school, and it was raining heavily. An hour after I came back, the sun started coming out from one side, and the sky wa very brighr yellow. The lighting effects ...
2
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0answers
971 views

Is this an accurate simulation of a further south Australia with a filled lake Eyre?

I created this climate map based on a simplified Koppen Climate Classification map (shown below). In this scenario Australia is moved 10 degrees of latitude further south and the Lake Eyre basin is ...
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1answer
68 views

If you were to create the most devastating and powerful Atlantic Hurricane ever, what path would it take and how would the storm progress? [closed]

I'm looking over different historical storms in the Atlantic, from Tropical Storms, to category 5 hurricanes. It made me wonder what the worst case scenario storm would look like, what path (and when) ...
2
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1answer
44 views

How different can microclimates be than their surrounding areas?

How much different in temperature and pressure can a microclimate be than the surrounding region? In other words, if you had a dry region but then a valley within a ring of mountains that isolated ...
5
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2answers
453 views

Centrifugal Force in the Navier Stokes Equations

The Navier-Stokes equations are a set of nonlinear differential equations that diagnose wind speed and direction. They are (approximately) expressed as $$\frac{d\vec{u}}{dt}=-\frac{1}{\rho}\nabla P+f\...
6
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2answers
87 views

How does the energy of tornadic winds compare to floodwaters?

I have been watching The Weather Channel for a month straight following the hurricanes. One of the meteorologists warned people not to drive into floodwaters, saying that water moving at about 6 miles ...
0
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3answers
140 views

What makes up a gradient [closed]

My question is a two part question. First I currently know of two different gradients.I think there is more; however, I don't completely understand what makes a gradient. So, here is my questions. ...
4
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1answer
256 views

Do solar storms affect Earth's weather?

Solar storms have a direct effect on Earth, creating charged particles. What are the direct and indirect effects of large solar storms on Earth's atmosphere? Do solar storms affect Earth's weather?
6
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1answer
95 views

Could we cool the ocean by reflecting away sunlight to influence hurricanes?

I was wondering if we could possibly reduce the severity of, or steer a hurricane by changing albedo (e.g. dying the part ocean with a temporary light colored dye)? My thought would be to put this ...
3
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3answers
526 views

Eclipse, Hurricanes, Earthquake…Related Events?

Forgive my ignorance, I'm out of my depth. My wife has pointed to the upsurge climate and geological activity post Eclipse. My immediate response, at least inwardly, was to reject her suspicion. ...
2
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1answer
163 views

Could a firestorm create a hurricane-like cyclone?

Mesocyclones form when air rises and rotates in a "pillar" of sorts. It's sometimes associated with thunderclouds and tornado formation. A certain kind of cumulonimbus, the cumulonimbus flammagenitus,...
4
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1answer
105 views

Growth of polar vortices vs projective geometry; what does this figure mean?

I was reading the Wikipedia article about a mathematical subject called projective geometry, and I noticed that the second image in the body of the article referred to the "growth of polar vortices". ...
2
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1answer
113 views

Ways, Through Science, to Counteract Hurricane Forces?

I know nothing significant about meteorology and definitely not a science guy so this will probably seem naive... But today I am wondering if there is any existing science or methods a government (...
6
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1answer
133 views

Does a hurricane classification exists where estimated rainfall is taken into account?

Hurricanes are classified with the Saffir–Simpson hurricane wind scale. However an extreme amount of rainfall can cause a disaster although the windspeeds are not extreme. Is there some sort of ...