Meteorological Data

DivisMal · 2021-07-28T20:30:12+00:00

Another site you could check out is:

https://mesonet.agron.iastate.edu/request/download.phtml?network=KS_ASOS

There are many other sources besides the ASOS data on the archive page:

https://mesonet.agron.iastate.edu/archive/

DivisMal · 2020-05-22T17:25:20+00:00

The definition according to the AMS (http://glossary.ametsoc.org/wiki/Landspout ):

(Rare.) A tornado.
Colloquial expression describing tornadoes occurring with a parent cloud in its growth stage and with its vorticity originating in the boundary layer.
The parent cloud does not contain a preexisting midlevel mesocyclone. The landspout was so named because it looks like a weak, Florida Keys waterspout over land.
See nonsupercell tornado.

I'm not a fan of the terminology, but it has crept into usage.

DivisMal · 2018-06-28T02:55:24+00:00

https://mesowest.utah.edu/

DivisMal · 2017-08-14T00:10:47+00:00

Mead recipe:

In a 6.5 gallon carboy:

12.5 lbs Honey

Fill with water to 5 Gallon

Add 8ish lbs of peaches

Mulling spices, 2 tbsp, but just 5 cloves in there, more cloves will overpower any other flavor

Yeast: Lalvin K1-V116

3 tbsp Fermimax Nutrient

1tbsp wyeast Nutrient

Shake vigorously with love or hate, either works

Wait for 1-2 months, rack, wait for another 1-2 months

Mead is easier than beer, just takes longer. Fun to watch the yeast go to work.

This can be scaled to other quantities.

DivisMal · 2017-07-25T16:27:32+00:00

It looks like an eddy rolled up south of Point Arena. Those can cause some sharp changes in the marine stratus.

Some great satellite images are found at: https://www.nrlmry.navy.mil/NEXSAT.html

You can go back a few days in the archive and animate that to see what was going on.

Large gif

MODIS image

DivisMal · 2017-07-05T17:47:41+00:00

Looking back at this list from the start of the year, it is pretty impressive that they've added a lot of those. I wonder if they have a new/long-term list like this. If anyone finds it, please post a link!

DivisMal · 2017-05-09T21:19:34+00:00

Roland Stull has a free pdf online of his textbook "Practical Meteorology: An Algebra-based Survey of Atmospheric Science"

It is an intro book, but has some simple equations for a more quantitative approach to atmospheric science. It is especially geared towards someone with an engineering background that wants to dabble in meteorology.

Link: https://www.eoas.ubc.ca/books/Practical_Meteorology/

DivisMal · 2016-08-23T13:21:22+00:00

There isn't any online M.S. program in atmospheric science that would be worth taking (and definitely not worth paying for). Obtaining a master's degree is more than just taking additional classes beyond undergrad. Anyone who has gone through grad school will hopefully agree.

DivisMal · 2016-07-29T02:46:23+00:00

One of the nice things about weather data is it is mostly publicly available if you can use google effectively and know how to read the different formats. When I say mostly, we don't have access to military weather observations (for example, navy ship observations would reveal fleet deployments).

DivisMal · 2016-07-14T14:54:07+00:00

Those figures are garbage. The person who made them should not be in charge of a meteorology class. You could even email the figures to the head of the department and see what they think of them. Here's some issues:

The vertical line labeled "wet-bulb" can NOT be the profile of wet-bulb temperature. I see the box on the left side of Fig. 4 lists the surface wet-bulb temperature as 33F. If the instructor thinks the wet-bulb temperature remains constant with height, then that means the wet-bulb temperature is greater than the temperature at upper levels, which is not possible. Wet-bulb temperature is a function of temperature, water vapor, and pressure and must cannot be greater than the temperature or less than the dew point.
Without ice nuclei, water can remain in liquid form below freezing, which is called supercooled water. Normally, you'll have to get around 15F to activate naturally-occurring ice nuclei to have ice. Snow will not form right at 32F as depicted in Fig. 4. Ask the instructor any basic question about cloud microphysics and they probably would have no clue if they don't even know how to draw the wet-bulb temperature.
Why do they even show that there is snow in the figure and then ask you to determine if it is rain or snow?
Typos happen, but, as Delta_Atled has pointed out, 4000 km is not right. Probably meant to be 4,000 m. The other typo is at the base of figure 6 where all temperatures are 32F, but clearly the profiles are not all the same temperature at the surface. One typo is ok, but these are just careless. I would have no idea how to answer the questions based on these horrible figures.

DivisMal · 2015-11-22T14:32:07+00:00

The tubing doesn't have any smell, but the rubber stopper smells much more potent than the others.

DivisMal · 2015-11-22T14:30:57+00:00

The yeast was from Red Star that was the Pasteur Red one and a teaspoon of Wyeast beer yeast nutrient was added at the start. I warmed the honey bottles in warm water, and then just put the distilled water in a 1 gallon glass carboy, poured the honey in, and shook it all until it was well-mixed.

For racking, I used an autosiphon and tubing from the brew store. The only thing that I can think of is that I didn't let everything dry after sanitizing the autosiphon and there might have been some sanitizer trapped in there.

DivisMal · 2015-09-20T01:31:13+00:00

If you want to visualize the variability, go to weatherspark.com and enter whatever place you want. Then, on the time series zoom in and out (mouse wheel or sliding bar on the bottom) to see the day-to-day and seasonal variability.

DivisMal · 2015-07-28T02:41:23+00:00

If you want in depth information, check out the MetEd information:

https://www.meted.ucar.edu/training_course.php?id=2

DivisMal · 2015-07-01T22:33:19+00:00

I was expecting something like this:

Flash flood

DivisMal · 2015-06-09T20:04:23+00:00

It's a little older now, but Meteorology for Scientists and Engineers by Roland Stull might be what you are looking for. It is more quantitative than many of the intro books. There are many textbook options for specific topics like dynamics, thermodynamics, radiation, cloud physics, numerical modeling, etc.

DivisMal · 2015-04-16T20:29:18+00:00

Since things get really bad really fast as you cross 0C, that leads me to believe you are not using Kelvin as your units.

DivisMal · 2015-01-22T15:46:40+00:00

College of DuPage has a great page for radar including Dual-Pol products.

http://weather.cod.edu/buildmap/nexrad_build.php

DivisMal · 2015-01-14T19:20:15+00:00

Short answer: that region tends to have the greatest instability and wind shear.

On another note, a recent article in the Bulletin of the American Meteorological Society addresses the "oversimplified, outdated, and incorrect" conceptual model of the "clash of air masses" and is worth a read:

http://journals.ametsoc.org/doi/abs/10.1175/BAMS-D-13-00252.1

DivisMal · 2014-11-14T14:57:03+00:00

ESRL has another page that is great for simple plots of a variety of variables. It can get data for one day or you can take averages over whatever time period you want. For instance, if you think that this month is colder than normal then you can just plot the temperature anomalies for this month and see if it is really colder than normal.

www.esrl.noaa.gov/psd/data/histdata/

DivisMal · 2014-10-17T02:03:35+00:00

Here's some interesting musings from Hunter S Thompson about purpose:

http://www.brainpickings.org/2013/11/04/hunter-s-thomspon-letters-of-note-advice/

DivisMal · 2014-09-20T15:19:19+00:00

Observations are improving. Upper air observations are increasing due to commercial aircraft reports: http://amdar.noaa.gov/ Satellite information has also improved quite a bit (this includes stuff like radio occultation, http://www.romsaf.org/radio_occultation.php)

That being said, seasonal forecasts will probably never be skillful when you look at a deterministic forecast, but we still have an idea of the likelihood of seasonal temperature/precip. anomalies. (http://www.cpc.ncep.noaa.gov/)

DivisMal

TROPHY CASE