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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746 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
56 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?
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2answers
387 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
46 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 ...
8
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1answer
3k 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 ...
2
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3answers
933 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
59 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
229 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
687 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
523 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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0answers
111 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
34 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
39 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?...
7
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1answer
166 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
244 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
681 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 ...
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2answers
7k 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 ...
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0answers
945 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
67 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
43 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
418 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\...
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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 ...
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3answers
136 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
244 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?
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1answer
90 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 ...
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3answers
483 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. ...
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1answer
158 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
102 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
132 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 ...
0
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1answer
618 views

What is the mixing ratio of a cloud?

A cloud has relative humidity of 100% or more. Is it correct to say that the mixing ratio of a cloud is undefined? My reasoning is that dry air in a cloud is negligible therefore $w = \frac{x g}{ 0 kg}...
2
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0answers
424 views

Interpolation and extrapolation of unstructured data in python: memory error

I have 3 arrays, for longitude, latitude and temperature (so the observations are scattered in space). I want to apply interpolation on these data, but also extrapolation. I 've written the code beow, ...
0
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1answer
39 views

Difference between NCEP's 20th Century daily Forecast and Analysis variables

NCEP's Twentieth Century Reanalysis (V2) provides daily variables from 1871/01/01 to 2012/12/31. Monolayer analysis variables are made available in a regular grid and forecast variables in a gaussian ...
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1answer
163 views

Why would Google's map of areas affected by Hurricane Harvey have advisories for the west coast and other far away areas?

What behavior of this hurricane would lead to advisories for the west coast and even parts of Canada and Alaska, when the hurricane is in the South? I have little experience in meteorology or any of ...
4
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1answer
476 views

What part of a hurricane determines if it makes landfall?

Watching the news for the US hurricane Harvey and they say it will make landfall soon. But what part of the hurricane are they referring to?
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0answers
64 views

Where did clouds obscure the American eclipse of August 2017?

Emphasis here is did. I'm trying to find a source that will inform me about which locations in the United States actually had their view of the eclipse on Aug 21, 2017 obscured by clouds. I'd ...
3
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1answer
86 views

How long does it take to refresh the entire water supply in the Earth's atmosphere?

Water in the atmosphere is present as vapour, liquid and ice. It is just a small amount of the Earth's total water supply. I'm wondering how long it will take to rain down all the water from the ...
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3answers
143 views

Why don't weather forecast models normally take solar eclipses into account?

Since there is a total solar eclipse somewhere almost every year, I would have thought it would be included as a standard option in weather forecast models. However, I've learned that is not really ...
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3answers
19k views

How to interpolate scattered data to a regular grid in Python?

I have three txt files for longitude, latitude and temperature (or let's say three lists lon, lat, temp) from scattered weather station in the UK. I would like firstly to interpolate these data in ...
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0answers
136 views

How to explain the diurnal variation for different seasons

In a recent work, I'm trying to figure out the pollution situation of my case area. Dealing with the online equipments, I have got the PM2.5 and PM10 concentration time series for a whole year. I ...
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1answer
63 views

Why has the average low for the hottest months in Clearwater Florida about 5 degrees higher than the historical average?

Look up Clearwater Florida on Wikipedia and it gives you the average low for the Months of July and August as being 74.2F. About 3-4 years ago I picked up running as a main hobby and the temperature ...
3
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2answers
929 views

Does negative reference evapotranspiration make sense using FAO Penman-Monteith equation?

I computed the daily reference evapotranspiration $ET_0$ using the Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56. The outputs seems ...
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0answers
78 views

Pileus / velum & altocumulus / altostratus - classification problems

I have a lot of free time and often observe and take photos of the sky. Along with that, I always try to figure out what exactly I saw. I think that I have the basic understanding of clouds and cloud ...
3
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2answers
1k views

Plotting wind barbs in python (no U,V component)

I've got 4 different .txt files for longitude, latitude, wind speed and wind direction (so no U and V components of the wind). Is there any way to plot wind barbs from such a dataset?
3
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3answers
866 views

Predicting rainfall with governing equations

Which model is a good starting point for predicting precipitation (rain) for 24 hours in advance? I looked at Kalnay's Atmospheric modeling, data assimilation and predictability, and Holton's An ...
4
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1answer
115 views

When did people first realize that hurricanes are a particular type of storm system?

To a person living on a beach in the Caribbean or crossing the Atlantic on a sailing ship, it's not obvious whether a commotion in the sky is a hurricane or some other storm system. When did people ...
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2answers
192 views

How much is Solar Radiation effected by Axial Tilt or Obliquity?

I know that the Axial Tilt of Earth is about 23.4° - 23.5°. And I would like to know how much this change effects Solar Radiation for particular geo-location. What is the Axial Tile change rate? How ...
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2answers
96 views

Different atmospheric models available for personal usage?

We are two high schoolers who would like to embark on a project to simulate the atmospheres of exoplanets. More specifically, we would like to change the atmospheric composition of such planets. We ...
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1answer
96 views

Climate change model

What counter heating effects are taken into account in popular climate change models? Are things such as the cooling effect of polar ice melt and the desalination from ice melt rivers taken into ...