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NUCAPS EDR files in the cloud

NUCAPS EDRs (Environmental Data Records) are now populating space in the cloud, such as at this Amazon webservices (AWS) link https://noaa-nesdis-n20-pds.s3.amazonaws.com/index.html. This is part of the NODD (NOAA Open-Data Dessemination) project. At that AWS link you will see a ‘NUCAPS-EDR’ directory, and dropping down through year/month/day selections, a list of... Read More

NUCAPS Temperature estimates, 706 mb, 1725 UTC on 14 May 2024 (Click to enlarge)

NUCAPS EDRs (Environmental Data Records) are now populating space in the cloud, such as at this Amazon webservices (AWS) link https://noaa-nesdis-n20-pds.s3.amazonaws.com/index.html. This is part of the NODD (NOAA Open-Data Dessemination) project. At that AWS link you will see a ‘NUCAPS-EDR’ directory, and dropping down through year/month/day selections, a list of filenames appears with names such as: NUCAPS-EDR_v3r1_j01_s202405141514589_e202405141515287_c202405141606240.nc ; ‘j01’ identifies the satellite as NOAA-20; data in this file starts 15:14:58.9 on 14 May 2024, ends at 15:15:28.7 on 14 May 2024, and was created on 16:06:24.0 on 14 May 2024. The file listing shown below as a screen-capture shows data from 1725 to 1732 UTC on 14 May 2024.

NUCAPS EDR data listing from Amazon Webservices (Click to enlarge)

These data can be displayed most easily by knowing when NOAA-20 overflew a region, and this website helps with that. The GOES-East projection showing NOAA-20 orbits on 14 May is shown below. Focus on the ascending pass off the East Coast of the United States, from 17:25 to 17:32 or so.

NOAA-20 orbits, 14 May 2024 (click to enlarge)

After downloading the Sounder QuickLooks software (from CSPP), 7 commands created the mapping of temperature shown up top. First, the .qz file that includes the software packages was expanded and I changed locations to the created directory, making that the home directory with the export command. A shell script within the directory is then sourced to set up environments (one result of this shell script is that the $CSPP_SOUNDER_QL_HOME/bin directory is added to a user’s $PATH). Then I changed to the bin directory. The script ‘getall’ retrieves the netcdf files from the cloud — it’s a series of unix wget commands, i.e., “wget https://noaa-nesdis-n20-pds.s3.amazonaws.com/NUCAPS-EDR/2024/05/14/NUCAPS-EDR_v3r1_j01_s202405141725389_e202405141726087_c202405141803060.nc". The variable ‘files’ matches all of the netcdf files that were downloaded. Finally, the 700-mb temperature field is created, as shown above. (Note: because the cspp_sounder_ql_env shell script puts the bin directory in the user’s $PATH, the ql_level2_image shell script below could be invoked from any directory. In other words, there’s no need to put the netcdf files in the bin directory!)

tar -xvf cspp-sounder-ql-1.3.tar.gz 
cd cspp-sounder-ql-1.3
export CSPP_SOUNDER_QL_HOME=$PWD
source $CSPP_SOUNDER_QL_HOME/cspp_sounder_ql_env.sh
cd bin
getall
files=$PWD/NUCAPS-EDR_v3r1_j01_s2024051417*
./ql_level2_image.sh $files NUCAPS --dset temp --pressure 700

Past blog post entries on Sounder QuickLooks software are here and here.

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Wildfires in British Columbia produce pyrocumulonimbus clouds

10-minute Full Disk sector GOES-18 (GOES-West) Day Land Cloud Fire RGB, Shortwave Infrared (3.9 µm), “Clean” Infrared Window (10.3 µm) and “Red” Visible (0.64 µm) + Fire Power derived product (a component of the GOES Fire Detection and Characterization Algorithm FDCA) images (above) showed signatures of multiple wildfires across northeastern British Columbia, two of which produced  pyrocumulonimbus (pyroCb) clouds — having cloud-top... Read More

GOES-18 Day Land Cloud Fire RGB (top left), Shortwave Infrared (3.9 µm, top right), “Clean” Infrared Window (10.3 µm, bottom left) and “Red” Visible (0.64 µm) + Fire Power derived product (bottom right), from 1900 UTC on 13 May to 0040 UTC on 14 May [click to play animated GIF | MP4]

10-minute Full Disk sector GOES-18 (GOES-West) Day Land Cloud Fire RGB, Shortwave Infrared (3.9 µm), “Clean” Infrared Window (10.3 µm) and “Red” Visible (0.64 µm) + Fire Power derived product (a component of the GOES Fire Detection and Characterization Algorithm FDCA) images (above) showed signatures of multiple wildfires across northeastern British Columbia, two of which produced  pyrocumulonimbus (pyroCb) clouds — having cloud-top infrared brightness temperatures of -40ºC and colder, denoted by shades of blue in the 10.3 µm images — late in the day on 13 May 2024 (these were Canada’s first pyroCb clouds of their 2024 wildfire season, which has gotten off to an unusually early start). Wildfire smoke drifting eastward was intermittently reducing the surface visibility at High Level, Alberta (CYOJ).

The largest of these fires burned very hot, exhibiting 3.9 µm shortwave infrared brightness temperatures of 137.88ºC (the saturation temperature of GOES-18 ABI Band 7 detectors) — with Fire Power values intermittently exceeding 6200 MW (below).

Cursor sample of GOES-18 Day Land Cloud Fire RGB (top left), Shortwave Infrared (3.9 µm, top right), “Clean” Infrared Window (10.3 µm, bottom left) and “Red” Visible (0.64 µm) + Fire Power derived product (bottom right) at 2040 UTC on 13 May [click to enlarge]

GOES-18 True Color RGB images from the CSPP GeoSphere site (below) displayed the dense plumes of wildfire smoke, with pyroCb clouds produced by the larger, more intense wildfires rising above the tops of the smoke (casting shadows onto the smoke layer below).

GOES-18 True Color RGB images, from 1600 UTC on 13 May to 0310 UTC on 14 May [click to play MP4 animation]

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Image Archive of the Historic May 11th Geomagnetic Storm

Thousands if not millions of people took colorful photos of the Northern Lights during the early hours of May 11th during a remarkable G5 geomagnetic storm that expanded Aurora Borealis activity southward to unusually low latitudes in the United States. The JPSS fleet of polar-orbiting spacecraft captured eight monochromatic VIIRS... Read More

Thousands if not millions of people took colorful photos of the Northern Lights during the early hours of May 11th during a remarkable G5 geomagnetic storm that expanded Aurora Borealis activity southward to unusually low latitudes in the United States.

The JPSS fleet of polar-orbiting spacecraft captured eight monochromatic VIIRS Day Night Band images over North America documenting the historic space weather event from a satellite perspective, archived here for posterity and future research. (click on each individual image to see the full resolution version)

NOAA-20 Day Night Band Images

Suomi-NPP Day Night Band Images

NOAA-21 Day Night Band Images

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NOAA-20 and NOAA-21 NUCAPS profiles provide gap-free coverage

The long-anticipated arrival of NOAA-21 NUCAPS profiles (to supplement NOAA-20!) to AWIPS means that data void regions such as the South Pacific Ocean now have complete twice-daily coverage, as shown by the inidividual profiles above, and the overlapping profiles below. This means that a twice-daily mappings of accurate satellite sounder-provided... Read More

NOAA-20/NOAA-21 NUCAPS profile estimates of K-Index (individual swaths) over the South Pacific, 2250 UTC 12 May 2024 – 0210 UTC 13 May 2024 (Click to enlarge)

The long-anticipated arrival of NOAA-21 NUCAPS profiles (to supplement NOAA-20!) to AWIPS means that data void regions such as the South Pacific Ocean now have complete twice-daily coverage, as shown by the inidividual profiles above, and the overlapping profiles below. This means that a twice-daily mappings of accurate satellite sounder-provided thermodynamic variables are available! The K-Index fields shown here are highlighted because of their known relationship to the Galvex-Davison Index. Thus, the basin-wide fields can be compared to model output to assess where the model is or is not in accord with reality.

NOAA-20/NOAA-21 NUCAPS profile estimates of K-Index (accumulated swaths) over the South Pacific, 2250 UTC 12 May 2024 – 0210 UTC 13 May 2024 (Click to enlarge)

The stepped animation below shows the GDI forecast bracketing the observations of K-Index shown above, from the GFS initialized at 1800 UTC 12 May 2024. (Source).

GDI forecast over the South Pacific from the GFS initialized at 1800 UTC on 12 May 2024. 03-, 06-, and 09-h forecasts are shown (Click to enlarge)

GOES-18 imagery compares favorable to the K-Index fields, as shown in the true-color imagery below (taken from the CSPP Geosphere site).

GOES-18 True Color Imagery over the South Pacific starting 2201 UTC on 12 May 2024

NUCAPS profiles are also available from MetopC, and that satellite gives excellent (but not complete) coverage about three hours before the NOAA-20/NOAA-21 overpasses. MetopC estimates of K-Index are shown below, for two passes spanning 2006 to 2153 UTC on 12 May 2024.

MetopC NUCAPS estimates of K Index over the South Pacific, 2006 – 2153 UTC on 12 May 2024 (click to enlarge)

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