APOD: Aerosol Earth (2018 Sep 01)

Comments and questions about the APOD on the main view screen.
User avatar
APOD Robot
Otto Posterman
Posts: 3359
Joined: Fri Dec 04, 2009 3:27 am

APOD: Aerosol Earth (2018 Sep 01)

Post by APOD Robot » Sat Sep 01, 2018 4:08 am

Image Aerosol Earth

Explanation: On August 23, 2018 the identification and distribution of aerosols in the Earth's atmosphere is shown in this dramatic, planet-wide visualization. Produced in real time, the Goddard Earth Observing System Forward Processing (GEOS FP) model relies on a combination of Earth-observing satellite and ground-based data to calculate the presence of types of aerosols, tiny solid particles and liquid droplets, as they circulate above the entire planet. This August 23rd model shows black carbon particles in red from combustion processes, like smoke from the fires in the United States and Canada, spreading across large stretches of North America and Africa. Sea salt aerosols are in blue, swirling above threatening typhoons near South Korea and Japan, and the hurricane looming near Hawaii. Dust shown in purple hues is blowing over African and Asian deserts. The location of cities and towns can be found from the concentrations of lights based on satellite image data of the Earth at night.

<< Previous APOD This Day in APOD Next APOD >>

Boomer12k
:---[===] *
Posts: 2350
Joined: Sun Apr 22, 2007 12:07 am

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by Boomer12k » Sat Sep 01, 2018 5:04 am

"Smoke gets in your eyes...."

:---[===] *

starsurfer
Stellar Cartographer
Posts: 3296
Joined: Thu Mar 15, 2012 7:25 pm

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by starsurfer » Sat Sep 01, 2018 8:31 am

Click to play embedded YouTube video.

gmPhil
Ensign
Posts: 33
Joined: Tue Nov 02, 2010 9:15 am

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by gmPhil » Sat Sep 01, 2018 9:22 am

Wondering what's the cause of all the "black carbon particles in red from combustion processes" in central Africa?

User avatar
Ann
4725 Å
Posts: 9116
Joined: Sat May 29, 2010 5:33 am

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by Ann » Sat Sep 01, 2018 10:26 am

gmPhil wrote:
Sat Sep 01, 2018 9:22 am
Wondering what's the cause of all the "black carbon particles in red from combustion processes" in central Africa?
Cooking food over open fire, making a lot of smoke?

Ann
Color Commentator

User avatar
neufer
Vacationer at Tralfamadore
Posts: 15420
Joined: Mon Jan 21, 2008 1:57 pm
Location: Alexandria, Virginia

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by neufer » Sat Sep 01, 2018 12:04 pm

Ann wrote:
Sat Sep 01, 2018 10:26 am
gmPhil wrote:
Sat Sep 01, 2018 9:22 am

Wondering what's the cause of all the "black carbon particles in red from combustion processes" in central Africa?
Cooking food over open fire, making a lot of smoke?
https://en.wikipedia.org/wiki/Slash-and-burn wrote:
<<Slash-and-burn agriculture, or fire–fallow cultivation, is a farming method that involves the cutting and burning of plants in a forest or woodland to create a field called a swidden. (Preparing fields by deforestation is called assarting.) In subsistence agriculture, slash-and-burn typically uses little technology. It is often applied in shifting cultivation agriculture (such as in the Amazon rainforest) and in transhumance livestock herding.

Sometimes there are several cycles of slash-and-burn within a few years' time span. For example, in eastern Madagascar, the following scenario occurs commonly. The first wave might be cutting of all trees for wood use. A few years later, saplings are harvested to make charcoal, and within the next year the plot is burned to create a quick flush of nutrients for grass to feed the family zebu cattle. If adjacent plots are treated in a similar fashion, large-scale erosion will usually ensue, since there are no roots or temporary water storage in nearby canopies to arrest the surface runoff. Thus, any small remaining amounts of nutrients are washed away. The area is an example of desertification, and no further growth of any type may arise for generations.>>
https://www.un.org/africarenewal/magazine/january-2008/saving-africa%E2%80%99s-forests-%E2%80%98lungs-world%E2%80%99 wrote:
<<According to the UN Food and Agriculture Organization (FAO), indigenous (also known as “old-growth”) forests in Africa are being cut down at a rate of more than 4 mn hectares per year — twice the world’s deforestation average. According to the FAO, losses totalled more than 10 per cent of the continent’s total forest cover between 1980 and 1995 alone. Saving Africa’s forests from the chainsaw and axe of encroaching humanity is essential to the health and productivity of much of the continent’s economy, experts point out. They cite the forests’ roles as watersheds, defences against soil erosion and regulators of local weather conditions.>>
Art Neuendorffer

NCTom

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by NCTom » Sat Sep 01, 2018 12:17 pm

Viewing the wind patterns that carry these aerosols shows the eastern US being impacted by the western fires. When the Yellowstone super volcano goes, it will blast a big hole in the Rockies and cover the eastern half of the US in a major aerosol cloud. Goodby sunny days for a long time!

User avatar
neufer
Vacationer at Tralfamadore
Posts: 15420
Joined: Mon Jan 21, 2008 1:57 pm
Location: Alexandria, Virginia

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by neufer » Sat Sep 01, 2018 1:40 pm

Click to play embedded YouTube video.
NCTom wrote:
Sat Sep 01, 2018 12:17 pm

Viewing the wind patterns that carry these aerosols shows the eastern US being impacted by the western fires. When the Yellowstone super volcano goes, it will blast a big hole in the Rockies and cover the eastern half of the US in a major aerosol cloud.

Goodby sunny days for a long time!
Art Neuendorffer

alcor
Ensign
Posts: 27
Joined: Fri Nov 06, 2015 10:12 pm

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by alcor » Sat Sep 01, 2018 2:34 pm

What's cooking in the northern part of the Atlantic? Is it all the males :D who are starting to barberque after all the fires are gone in the northern Europe? With the smoke starting to collect out in the sea of the Atlantic?
Arne

User avatar
Ann
4725 Å
Posts: 9116
Joined: Sat May 29, 2010 5:33 am

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by Ann » Sat Sep 01, 2018 2:53 pm

alcor wrote:
Sat Sep 01, 2018 2:34 pm
What's cooking in the northern part of the Atlantic? Is it all the males :D who are starting to barberque after all the fires are gone in the northern Europe? With the smoke starting to collect out in the sea of the Atlantic?
Good question. It really looks as if all that red smoke over the Atlantic might be the smoky remnants of the huge forest fires that we have had in Europe, not least in Sweden, during this blisteringly hot summer.

Or maybe it all originated in California? Haven't you had forest fires there, too?

Ann
Color Commentator

User avatar
Chris Peterson
Abominable Snowman
Posts: 14006
Joined: Wed Jan 31, 2007 11:13 pm
Location: Guffey, Colorado, USA

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by Chris Peterson » Sat Sep 01, 2018 3:07 pm

Ann wrote:
Sat Sep 01, 2018 2:53 pm
alcor wrote:
Sat Sep 01, 2018 2:34 pm
What's cooking in the northern part of the Atlantic? Is it all the males :D who are starting to barberque after all the fires are gone in the northern Europe? With the smoke starting to collect out in the sea of the Atlantic?
Good question. It really looks as if all that red smoke over the Atlantic might be the smoky remnants of the huge forest fires that we have had in Europe, not least in Sweden, during this blisteringly hot summer.

Or maybe it all originated in California? Haven't you had forest fires there, too?
Smoke from southern Sweden would mostly be carried east, over Asia. Smoke from northern Sweden would probably end up in westerly Arctic circulation. Given the latitude of the smoke over the Atlantic, I'd say its origin is North America (which has experienced huge fires over the entire west, not just California).
Chris

*****************************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

bls0326
Ensign
Posts: 70
Joined: Tue Mar 26, 2013 10:18 pm

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by bls0326 » Sat Sep 01, 2018 4:58 pm

A link to current wind currents around the world.

https://earth.nullschool.net/#current/w ... ,21.76,345

Brian

User avatar
neufer
Vacationer at Tralfamadore
Posts: 15420
Joined: Mon Jan 21, 2008 1:57 pm
Location: Alexandria, Virginia

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by neufer » Sat Sep 01, 2018 5:31 pm

bls0326 wrote:
Sat Sep 01, 2018 4:58 pm

A link to current wind currents around the world.

https://earth.nullschool.net/#current/w ... ,21.76,345
Those are the surface winds. Smoke is more likely to follow 850 hPa or 500 hPa geopotential contours:

https://www.ecmwf.int/en/forecasts/char ... cal_global

https://www.ecmwf.int/en/forecasts/char ... cal_global
Art Neuendorffer

ImjustaBill

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by ImjustaBill » Sat Sep 01, 2018 6:42 pm

Why does if say September 9? :?:

User avatar
RJN
Baffled Boffin
Posts: 1480
Joined: Sat Jul 24, 2004 1:58 pm
Location: Michigan Tech

Re: APOD: Aerosol Earth (2018 Sep 01)

Post by RJN » Sat Sep 01, 2018 6:42 pm

The numeric date has now been corrected on the main NASA APOD. We apologize for the oversight.
- RJN