Thread: Air Quality
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Old September 21st 20, 04:42 AM posted to rec.bicycles.tech
Jeff Liebermann
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Posts: 4,018
Default Air Quality

On Sun, 20 Sep 2020 14:30:19 -0500, AMuzi wrote:

On 9/19/2020 9:49 PM, Jeff Liebermann wrote:
On Fri, 18 Sep 2020 20:47:37 -0500, AMuzi wrote:

On 9/18/2020 8:03 PM, Jeff Liebermann wrote:
On Thu, 17 Sep 2020 10:05:04 -0700, Jeff Liebermann
wrote:

Yet another smoke map:
https://hwp-viz.gsd.esrl.noaa.gov/smoke/index.html
In the box on the left, click:
HRRR: Near Surface Smoke
Fire Detections
It should look something like this:
http://www.learnbydestroying.com/jef...2020-09-18.jpg

More smoke links:
http://www.learnbydestroying.com/jef...ty%20Links.htm


Regarding Fire/Smoke Map 13 Sep 2020, what are the red dots?


Fire detections also known as hot spots as seen from satellites using
the VIIRS and MODIS data. If you uncheck "Fire Detections" on the
left menu, the red dots will disappear. Here's a better view of the
satellite fire data:
https://firms2.modaps.eosdis.nasa.gov/map/
Yes, Africa and South America are on fire.

There's one in Portage WI. I was just there and any massive
conflagrations were well disguised. There's also a red dot
in Chicago where my daughter shared beach snapshots from a
clear dawn, no fires visible.


The satellite imaging is sensitive enough to detect a trash fires,
gasoline refinery gas flaring, volcanoes, large reflective surfaces,
solar power farms, factory rooftops, etc. See the FIRMS FAQ for more
detail than you probably want to read:
https://earthdata.nasa.gov/faq/firms-faq
See the section titled "What caveats should be considered when using
active fire data from FIRMS?" Also, super heated smoke plumes:
https://landweb.modaps.eosdis.nasa.gov/cgi-bin/NPP_QA/displayCase.cgi?esdt=NPP_AF&caseNum=PM_NPP_VAFIP_1 8215&caseLocation=cases_data&action=small


Thank you. I assume the red dot at Portage is the permanent
smoke plume from their huge power plant.


Y'er welcome. I didn't know that there was a power plant in Portage,
WI or I would have mentioned that it's probably a permanent anomaly.
https://earthdata.nasa.gov/earth-observation-data/near-real-time/firms/c6-mcd14dl
https://worldview.earthdata.nasa.gov/?l=MODIS_Terra_Thermal_Anomalies_All(hidden),MODIS _Aqua_Thermal_Anomalies_All(hidden),VIIRS_SNPP_The rmal_Anomalies_375m_Night,VIIRS_SNPP_Thermal_Anoma lies_375m_Day,MODIS_Combined_Thermal_Anomalies_All ,Reference_Labels(hidden),Reference_Features(hidde n),Coastlines,MODIS_Aqua_SurfaceReflectance_Bands1 43,MODIS_Aqua_SurfaceReflectance_Bands721,MODIS_Te rra_SurfaceReflectance_Bands143,MODIS_Terra_Surfac eReflectance_Bands721,VIIRS_SNPP_CorrectedReflecta nce_TrueColor(hidden),MODIS_Aqua_CorrectedReflecta nce_TrueColor(hidden),MODIS_Terra_CorrectedReflect ance_TrueColor
If you get a blank map, go backwards one day. Thermal anomalies tend
to look like a fire 24x7 365 days per year. In the lower left of the
NASA Worldview map, select "1 year" for the duration (above the
forward/back arrows). Anything that's been "burning" for a year in
the same location is probably an anomaly:
https://worldview.earthdata.nasa.gov/?v=-101.34079371668064,37.96593446436127,-79.65964639640275,50.39061888830501&t=2020-09-20-T20%3A00%3A00Z&l=MODIS_Terra_Thermal_Anomalies_All ,MODIS_Aqua_Thermal_Anomalies_All,VIIRS_SNPP_Therm al_Anomalies_375m_Night,VIIRS_SNPP_Thermal_Anomali es_375m_Day,MODIS_Combined_Thermal_Anomalies_All,R eference_Labels,Reference_Features,Coastlines,MODI S_Aqua_SurfaceReflectance_Bands143,MODIS_Aqua_Surf aceReflectance_Bands721(hidden),MODIS_Terra_Surfac eReflectance_Bands143(hidden),MODIS_Terra_SurfaceR eflectance_Bands721(hidden),VIIRS_SNPP_CorrectedRe flectance_TrueColor(hidden),MODIS_Aqua_CorrectedRe flectance_TrueColor(hidden),MODIS_Terra_CorrectedR eflectance_TrueColor(hidden)Some
The red dots seem to match the lat-long locations of the various
Wisconsin power plants:
https://en.wikipedia.org/wiki/List_of_power_stations_in_Wisconsin
The plant in Portage is at 43.486111, -89.420278 which might be the
red dot below the "Wisconsin" label on the map.

Incidentally, if you click on "Add Layers" you can add smoke and land
details to the map.


--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
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