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.
910
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433 views
Is it possible for a sting jet to form over a continental landmass?
Sting jets are thought to be responsible for some of the most damaging winds associated with extratropical cyclones in the mid-latitudes. So far they have only been confirmed in the European region, ...
5
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1answer
170 views
What is the largest hurricane possible?
With Earth getting hotter and hurricanes also getting larger I wonder; Is there a limit on how big a hurricane can physically get?
1
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1answer
820 views
Question about the sign of the shearing deformation terms
I have the following equation for the shearing term of the deformation zone in meteorology. The reference is this link:
http://www.zamg.ac.at/docu/Manual/SatManu/main.htm?/docu/Manual/SatManu/CMs/Def/...
1
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2answers
231 views
What determines the direction of wind [duplicate]
What determines the direction that a wind blows?
I understand that the nature of my question is immensely broad but I see no other way to phrase the question.
The question surfaced in my mind when I ...
1
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0answers
29 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 ...
7
votes
2answers
3k views
Extracting Regional Data from ERA5
This is coming from a newcomer, so please be kind.
As I delve into the world of meteo data and reanalysis for the first time, I found that acquiring weather data is a lengthy process, so I'm shouting ...
1
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0answers
40 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 ...
28
votes
2answers
36k views
Why are there no hurricanes in the southern Atlantic basin?
We see tropical cyclones (going by different names e.g. hurricane, typhoon, cyclone) all over the tropics, but it seems that there are never any storms in the southern Atlantic. See this map of ...
2
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2answers
68 views
Estimation on how cold will my pond get - intent is to know if certain fish can survive in it
I want to get an estimate on how cold my pond will get.
It is a 1 acre pond in Central Florida USA. It has an average depth of 4 feet. There is not much circulation in the pond. It gets direct ...
3
votes
1answer
157 views
Locating shearlines or deformation zones in a map
I am looking for a way to detect shearlines or confluence regions such as that shown in the figure below (red dashed line).
I was able to derive the stretching, shear, and total deformations.
The ...
6
votes
1answer
3k views
How to calculate humidity using outside temperature and outside relative humidity?
I would like to ask how to calculate the relative humidity that a heated indoor area would have using only outside temperature and outside relative humidity.
I found the Relative Humidity Calculator ...
13
votes
1answer
4k views
St. Elmo's Fire not dangerous?
I know that St. Elmo's Fire is a form of plasma that occurs during thunderstorms that is similar to lightning because it is formed by a difference in charges.
But why isn't it dangerous if St. Elmo's ...
2
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2answers
69 views
Does rain itself affect barometric pressure?
I understand how and why low pressure systems are often associated with rain, but does the rain itself (both during and after) alter barometric pressure in any meaningful way?
0
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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?
1
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1answer
74 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 ...
4
votes
1answer
72 views
What type of cloud is this?
I live in a sub-tropical region of Australia.
Earlier today, we experienced temperatures of 31C and it was clear about 2 hours before I went out and noticed the following clouds directly above my ...
3
votes
1answer
94 views
Ordered arrangement of clouds
I happened to take a photograph of a region of clouds ,and it seems to have a rather ordered arrangement ,if one looks towards the left of the image. Would there be a physical explanation for this or ...
2
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0answers
72 views
What causes frozen “shooting water” spikes from ice covered water in the winter?
I have seen things like this appear once or twice on cold winter mornings, a frozen spike of water from an ice-covered container or very small body of water (puddle).
I found the photo below at Mel ...
3
votes
1answer
80 views
What do the little flags on these martian wind speed data points mean?
According to this answer the weather at the InSight lander on Mars can now be seen online at https://mars.nasa.gov/insight/weather/ This includes the wind speed and I believe the direction (if that's ...
2
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1answer
178 views
What are these Gizmos at Mauna Loa Observatory?
Artist Rosten Wu's Vimeo channel has a video title Bridging Time and there is discussion about the Keeling Curve and the site where it all began in Hawaii.
In the video there is a shot of a weather ...
6
votes
1answer
143 views
Are these plane trails seen from satellite
Here are photos from West of Normandy, at 7-9am after sunrise on the 14th of may, from the visible satellite. It's a bit strange that they are visible from space, they are 2-3 miles wide? Are they jet ...
6
votes
1answer
112 views
Can someone help me identify this cloud formation?
These pictures were taken today in Oklahoma City and I am both baffled and curious as to what formation this may be. I was wondering if anyone had any idea?
Thank you!
5
votes
1answer
116 views
There are cloud identification guides, are there also (guided) rock identification websites?
Seeing all these rock identification questions, got me wondering, is there no straightforward guided rock identification website?
In Intro to Geology lab, I remember going through a bit of a process ...
6
votes
1answer
289 views
What type of storm cloud is this?
We have had (and are still experiencing) waves of storms passing through this area of the central Queensland 'Capricornia' coast, Australia. This area is a subtropical coastal environment, close to ...
15
votes
1answer
1k views
What type of cloud formation are these dark low-hanging clouds?
I was thinking it could have been a non-rotating wall cloud, but I'm not sure.
YouTube video
Picture taken on September 9 2014... between 5-7 pm in North Georgia, about 40 miles north of Atlanta.
8
votes
2answers
456 views
What are these Gizmos at Izaña Atmospheric Research Center in Spain?
This tweet from the account of the Centro de Investigación Atmosférica de Izaña (AEMET) http://izana.aemet.es Izaña Atmospheric Research Center (AEMET) shows images of meteorological instruments ...
7
votes
2answers
1k views
What is this spaceship-shaped cloud?
This tweet from the European Space Agency (ESA)'s Spanish account show a striking photo of a round, flat, "space-ship-shaped" cloud in an otherwise completely clear sky. The stars are out so I assume ...
4
votes
2answers
98 views
Is it normal for a cyclonic storm to form at the latitude of New York, USA?
I am following climate activist Greta Thunberg's sail to N America from Europe on https://tracker.borisherrmannracing.com/. The model shows a cyclonic storm forming south of Nova Scotia, east of New ...
4
votes
1answer
79 views
Is there any possible way that a tropical cyclone of any strength could form over land?
Most tropical cyclones rapidly weaken over land, however, given some conditions (such as very wet soil/ground cover and tropical lower atmospheric conditions) they can sustain themselves or even ...
2
votes
0answers
45 views
Hypothetical: an immense disc blocks sunlight, how does this affect the weather?
I have a hypothetical situation, and I am specifically interested in how this situation would affect the weather.
I have asked this question elsewhere, however I feel that nobody with any expertise ...
2
votes
1answer
208 views
Why during subsidence inversion, upper layer warms more than lower layer?
Source : weather.gov
This is mentioned in the book I have been reading regarding stability in atmosphere.
But I am not able to pin point exact reason behind this.
"As the layer subsides, it ...
86
votes
3answers
31k views
Impossible or improbable? Hurricane crossing the equator
No known hurricane has ever crossed the equator. Hurricanes require the Coriolis force to develop and generally form at least 5° away from the equator since the Coriolis force is zero there.
Are ...
4
votes
1answer
2k views
Does ground-to-cloud lightning create crystals as well?
I've read that cloud-to-ground lightning can create fulgurites. Does ground-to-cloud lightning also create crystals within the earth as it surges through the minerals?
17
votes
3answers
14k views
How far away can you see a thunderstorm?
At 9:30 PM on July 13, 2015, I was looking due south from Oshkosh, WI. I saw very clearly a large storm with 1-2 lightning strikes per second. I could see cloud-to-cloud lightning traces, as well as ...
2
votes
1answer
277 views
Interpolating world data to a local grid in Python
I have an NC file that has global data with a high resolution (about 25 minutes) so a lot of coordinates.
I have some measured values of some region with irregularly spaced coordinates.
In order to ...
2
votes
1answer
43 views
Discrete distribution of daily rainfall [closed]
How can I estimate the rainfall rate every ten minutes during a day having the total amount of rainfall during that day ?
0
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1answer
31 views
Does the feel of temperature change, when you're in two different places [duplicate]
I'm from Baltimore Maryland. And our summers can be very intense sometimes a heatwave could put us at 100 degrees and with humidity it could feel like 110 degrees. Now, I have friends from the U.S. ...
2
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4answers
1k views
What is the difference between dew and rain?
What is the main difference between dew and rain?
Would it be correct if we say that rain is done in the upper troposphere while dew done in the lower troposphere? Or there are better definitions for ...
7
votes
3answers
1k views
Could Global Climate Change increase the average moisture in the air?
Given several hundred years, assuming global climate change results in the melting of the polar ice caps which leads to an increase in surface area of the oceans and an overall warming of the earth (...
2
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1answer
59 views
Atmospheric conditions needed that blocks all bright light during sunsets and allows you to stare directly at the sun
Today (July 5th, 2019 just before 8 pm KST), along the Han River in Seoul, the surface of the sun could be viewed with my naked eye (no protection needed), and this was safe on the eyes. It appeared ...
4
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1answer
96 views
What is the physical meaning of second moment of wind velocity?
I have been reading some documents about meteorological data and many of them mention the second moment of wind velocity.
I guess it has to do with the way the wind is changing but in such case I ...
2
votes
1answer
159 views
Presence of Diabatic heating term in the continuity equation
The tropical circulation paper by Gill (1980) approximates vertical velocity as the sum of pressure and diabatic heating terms (equation 2.5 at page 449).
Since the pressure is already a function of ...
2
votes
1answer
99 views
When and where is the atmospheric greenhouse effect strongest?
Is the greenhouse effect stronger in the ice covered area or in the equator?
Also is it stronger during winter or summer?
I am thinking it is stronger in the Ice covered area and during winter because ...
8
votes
2answers
430 views
What are good metrics to compare climates?
I'm interested in visualizing climate data across the conterminous U.S. to determine regions that I would be interested in living in. So far, I've pulled in NOAA data, and I've:
averaged the maximum ...
2
votes
0answers
46 views
Application of vorticity tendency equation
I have a question about the dynamics of westward propagating vortices.
In meteorology, the vorticity tendency is often used to explain the westward propagation of vortices (cyclonic circulation).
A ...
3
votes
1answer
228 views
What is the synoptic/atmospheric setup that is causing the U.S. severe weather outbreak in May 2019?
I asked this in the chat and it was suggested I ask on the main site.
There's been a seemingly perpetual severe weather outbreak over the central and eastern U.S. over the past two weeks. Killer EF3s ...
2
votes
1answer
353 views
Do cloud formations change depending on the season?
I'm currently working on some software for cloud masking, and thus far I have only been using satellite data as recent as spring (northern hemisphere). However, I'm wondering if cloud coverage or ...
4
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0answers
43 views
Oscillating dew point throughout the year?
I was searching for the climate of Saudi Arabia and I noticed that the city of Abha (altitude of 7000 feet) has a "strange" behavior in its dew point, as numbeo suggests: https://www.numbeo.com/...
4
votes
1answer
106 views
Get atmospheric pressure values through JavaScript
I'm working on a programming project in which I want to show isobars on a map with OpenStreetMap and the HTML tag canvas. The main problem that I'm facing is the dificulty of retrieving consistent ...
2
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0answers
51 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 ...
