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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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25 views

Is there any program that gives you air temperature (and precipitation) information if you feed them the date and location (latitude,longitude)?

I know I can google each data point (latitude, longitude, date) one by one and find if the government of that country has archived past weather information. But this will take infinite amount of time ...
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0answers
35 views

Question about the physics of hurricanes

I've a basic misunderstanding about the formation of tropic cyclones. From the absolute point of view, cyclones form in order to conserve total angular momentum - air masses at different latitudes ...
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1answer
63 views

What is the most optimal latitude on Earth for the generation of extreme maximum temperatures?

First question on this StackExchange, so here goes... Overall, reaching high temperatures is dependent on 2 factors: The (maximum) solar angle in the day. The greater the solar angle, the more ...
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1answer
35 views

Historical isobaric charts?

I am looking for a small-scale isobaric chart, which encompasses central Africa. I am interested in the time span of the past few months. Do you know where to find it? Thanks
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48 views

Thermal likelihood formula

Background: I use the X-Plane flightsimulator for flying and gliding. In the program we have real weather (clouds, winds, etc...) but thermals are not well implemented, they don't have any connection ...
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0answers
93 views

Does this weather pattern have a name?

The past few weeks of spring in northern Ohio I believe I have noticed a weather pattern where the weather forecast will show a string of days with rain, but what happens is the day is mostly clear, ...
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0answers
73 views

Atmospheric pressure in weather forecasts: actual pressure or sea-level pressure [duplicate]

What is the usual way to report surface pressure in weather forecasts online, in smartphone apps, on TV/radio? Is it the actual local pressure or the sea-level adjusted value? Does it differ by ...
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0answers
144 views

Modification of an air mass

If an air mass that exists in North America starts moving south west or south east what kind of modification will affect it and how would you characterize it in it's final state? My answer is that it ...
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0answers
36 views

Topography and flash flooding

I'm looking for a study or document showing the effect of the topography, slopes, the sea level and the tide on flash flooding occurrence. Thanks in advance
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49 views

Figuring out the temperature at the tropopause

Either I am misunderstanding something, or reading conflicting information. Likely the former. First off, the tropopause is defined as the boundary between the troposphere and the stratosphere. That ...
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0answers
80 views

How can I convert a CERA-20C total precipitation dataset of "monthly means of daily means' (edmo) to mm/month?

I downloaded an edmo dataset of 1 ensemble of the cera-20c model. I want to convert these data, which are in [m], to mm/month. Further specifications: 0.125/0.125 grid, -29/30/-30/31 area. Example of ...
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79 views

how to calculate the average moisture flux over a period of time

I wanna calculate the average moisture flux over a period of time. For example the average moisture flux over an entire summer. I don't have a meteorological background. I have a conceptual confusion ...
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30 views

How to create Indonesian environmental conditions in India?

Need to create and maintain Biofloc for fish farming in India, it's really successful in Indonesia and I believe it's due to environmental conditions. Can we replicate the same in India?
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45 views

How to calculate water vapor budget for a selected region in GRADS or MAT Lab

I need to calculate water vapor budget for a selected region. Can anyone suggest a specific link or code for the above mentioned tools please. I have seen a link for NCL but i am not familiar with ...
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26 views

what changes in the weather prior to thuderstorms?

What changes in the weather prior to thunderstorms (day before, for example)? It seems humidity goes up and temperature but is there anything else?
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47 views

What is the most powerful kind of extratropical cold core cyclone and why?

I want to understand what makes for a very strong extratropical cyclone. So which kind on Earth is the strongest in terms of windspeed or pressure? Southern ocean storms, nor'easter, European wind ...
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63 views

Can cloud seeding make a much hotter summer, at a middle latitude, at the area that receives less water than expected?

My country, Spain (40ºN), receives clouds from the Atlantic Ocean during the summer. Our most visited beaches are on the Eastern coast, which sits on the Mediterranean Sea, there is typically more dry ...
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49 views

Plotting moist static energy fluxes

I'm trying to plot Moist static energy fluxes (vectors) and their divergence like the attached Figure. I have monthly means of u, v, temperature, specific humidity and geopotential from(1000-100 hPa) ...
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35 views

Is there a conventional name for when wind speed increases as a result of a large descending air mass?

I remember reading a long time ago in a meteorology book that certain dust storms were caused by a rapid descent of a large air mass. As the air is pressed against the ground, it is forced to spread ...
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125 views

Why does hot air sink in the eye of a tropical cyclone? [duplicate]

We know that warm air rises in the atmosphere due to the reduced density of the parcel itself. But in the eye of a tropical cyclone the warm air sinks down and does not reach the surface, but gets ...
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55 views

Correlation between temperature and precipitable water in the tropical climate

Air temperature is known to correlate well with precipitable water at higher latitudes. What are the likely factors that degrade the correlation in the tropical monsoon climate?
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18 views

Is there such a thing as virtual barotropic?

In meteorological terminology within dynamics, there are usually one of two unique assumptions made: Baroclinic- density is a function of both temperature and pressure : $\rho(x,y,z,t)=\frac{P(x,y,z,...
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64 views

Where can I find climate analogs? [closed]

It is an unusual year where I'm at, I'd like to go and see similar climatological years for the north america, more particularly for average pressure, maybe 500mb or 700mb. How would I do this Edit:...
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43 views

classifying the actual weather data of Cfb climate to dry, normal and wet periods [closed]

I have 3 years weather data of a region in Austria, and I want to classify a year to dry, normal and wet periods, how I can analyse this data of such climate? Thanks
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195 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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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?
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68 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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86 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 ...
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0answers
612 views

Jet stream core

Why on a Polar Front Jet Stream does the core form on the tropical (warm air) side and not on the polar (cold air) side? Thank you in advance.
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343 views

What is a weather system?

I heard on Star Talk Radio that Jupiter has weather systems larger than Earth so I was just curious to know what the definition of a weather system is exactly.
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33 views

How to Compute Visibility [duplicate]

I have the following data about a region, and would like to compute the visibility for that region, i.e. the distance that a person could see ahead of them. I have: precipitation (mm/day) dewpoint(...
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1answer
75 views

Pure blue sky in Spring [closed]

I live in France. Is it true that there are more occurrences of deep blue skies during spring. If yes why ? Is it true also during autumn. Thank you for answering
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339 views

Why is lightning going from the Earth to the clouds while the electrons are going from the clouds to the Earth?

The lightning is often a discharge in advance. The (negative) charge slide occasionally a little further on in the conductive channel, wherein said channel is highlighted each time something. The ...
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0answers
74 views

What happens if humidity is 100%? [duplicate]

What happens when the humidity is 100% in atmosphere. Does it heavily rains or fog formation occurs? Or is there any other possibilities?
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0answers
77 views

practice papers for IESO [duplicate]

I am from India. Please suggest where to find practice questions for earth science Olympiad? Are papers apart from the 2010,2011 entrance test available?
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2answers
199 views

What happens if it rains above the boiling point of water?

The freezing point of water is 32°F. If it rains at a temperature lower than that, it will snow. However, let's say we dig a deep hole not filled with water that goes like 10,000 feet below sea level. ...
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1answer
33 views

Precipitation Totals past days online?

I am looking for a website that can I look for to check and see the precipitation totals for past days.. I go to this site : https://www.cocorahs.org/ . It lacks in some areas where I live in the ...
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1answer
41 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
100 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 ...
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3answers
158 views

How to design an experiment to quantify back radiation from atmospheric carbon dioxide?

Based on our current knowledge of CO$_2$ and current instrumental techniques, how big would a laboratory sample of air with 400ppm of CO$_2$ need to be in order to quantify the back radiation from CO$...
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1answer
635 views

Mild climate, low-humidity city all year round [closed]

Where in the world can I find a place with mild / warm and non-humid climate all year round? What I'm looking for is a city with these characteristics: - monthly average low temperature > 5°C (41°F) -...
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1answer
134 views

Where can I find information about monthly seasonal change in a given area?

I have searched Google for almost an hour with no result. I'm looking for something like, "Indonesia, January to August is rain season, September to December is hot season". I can't use the old ...
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1answer
112 views

Does the Columbia Basin, North Cascades and Idaho Panhandle/Clearwater get a lot of violent, rotating supercellular thunderstorms?

Every storm season, supercells erupt in Montana and Wyoming. Wayward cold-core setups can trigger supercells or even long-tracked strong tornadoes in the Columbia/Willamette Valley and the rest of SW ...
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1answer
127 views

Does being in the air provide any protection from an asteroid?

How does radiation and shock waves from a radioactive asteroid or atomic explosion disperse throughout Earth's atmosphere? Are there specific areas on Earth that are less likely to receive the shock ...
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1answer
715 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}...
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1answer
169 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 ...
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1answer
48 views

Are there sources that offer derivative climate change data?

Meteorologists often say that it’s difficult to attribute any individual weather event to climate change, but I’m wondering, do meteorologists or weather services study or publish derivative climate ...
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1answer
204 views

Sun Appearing to have Stopped Shining [closed]

What could have caused the Sun to appear to have stopped shining from noon 'till 3 in the afternoon? According to the Bible, at Jesus' crucifixion, darkness covered the land because the sun stopped ...
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1answer
35 views

Why is the outer color of a rainbow red? [closed]

Why is the outer color of a rainbow red? (Source: Wikipedia)
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1answer
71 views

Extract a GFS variable

I'm trying to extract the APCP variable from a GFS file, with this code: wgrib2 gfst.grb2 -match ":(APCP):" - grib gfst.grb2.small I get a ...