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Snow, glaciers on the Sahara

High Resolution images from the Polar Orbital Satellite
Low temps
Low temps
The anomalous low temperature regions on the Sahara.

homepage: homepage: http://portland.indymedia.org/en/2015/10/430799.shtml


Snow 29.Oct.2015 01:07

Brent

Snow on the sands of the Sahara.
Snow
Snow

Snow in the dunes 29.Oct.2015 01:08

Brent

Blowing snow has drifted into the sand dunes on the Sahara just to the west of the feature displayed above..
Dunes with snow
Dunes with snow

Glaciation 29.Oct.2015 01:09

Brent

This image shows three mountaintops with the beginnings of glaciation.
Glaciation
Glaciation

Blob 29.Oct.2015 01:10

Brent

Here is an interesting feature out in the desert. I call it the 'blob'. You can see how rains have carved paths down from the blob to an area which is now green within the midst of the desert.
Blob
Blob

Leafy 29.Oct.2015 01:27

Brent

Here is an image of a green spot in the midst of the desert. The rains have carved channels that cause this feature to resemble the 'veins' in a leaf.
Green spot
Green spot

Sand River 29.Oct.2015 01:37

Brent

The Sahara is a beautiful and fascinating part of the planet (it is a little like looking at an alien world like Mars). Here we can see that heavy rains have washed a river of sand down a slope into a valley. There are also scattered spots of green vegetation. To give an idea of the scale, the image is about 300 kilometers by about 150 kilometers. The river of sand is about 30 kilometers wide and about 300 kilometers long.
Sand river
Sand river

Vegetation 29.Oct.2015 01:48

Brent

The light green of vegetation is appearing all over the desert. These features are not yet visible on lower resolution satellite images.
Vegetation
Vegetation

River 29.Oct.2015 01:55

Brent

A river running through the desert bordered by green vegetation.
River
River

Dunes 29.Oct.2015 02:16

Brent

To give some idea of the scale, the dunes with snow are about 40 kilometers long. The snow drifts are about 2 kilometers wide.

Persistent cold spot 29.Oct.2015 12:54

Brent

The spot first appeared in mid September, 2015, and since then has become even colder and very persistent.
Low temps
Low temps

And so... 31.Oct.2015 06:09

shaker

what?

Not trying to be rude, Brent, but I kept waiting for some conclusion and there was none.

I'll give you one of my own...

I think there are anthropogenic climate effects. It's pretty plain on even a casual level. Just look at cities and their acres of concrete and asphalt, or places where agricultural practices have led to near desertification. Look at the US in the '30s. Slight things can, in our tiny perspective, have big consequences.

I don't want to get into a discussion about HAARP beyond the fact that I think it's grossly on the order of 'stupid' if you've anything less than benevolent purposes. Even then it's a questionable practice in the overall scheme.

Collectively we've quite large egos and I think there's too little humility in science. We just love the animated climate models and dumbed-down 'explanations'. Fact is the planet has been through torturous times. We call everything we haven't seen before an 'anomoly' based upon mere slivers of time and experience, while much of that time and experience have questionable accuracy.

I'm hardly a climate change denier and understand that this kind of comment is dangerous in the implication that we can 'eat, drink, and be merry' because it's out of our hands.

There are practices that we have that are simply not as practical as we think. It's obvious we've given it too little thought, and what thought we've given it is generally bent to our species desires at the expense of others.

I ran across a statement of another that I think is succinctly appropriate (and I probably am paraphrasing) "It's really not about the planet. It will survive. It's about us surviving on the planet."

We could get by easily on a lot less energy. We don't have to have nuke plants. We don't have to reintroduce chemicals into the environment which nature has kept segregated from us through space and time and less harmful chemical bonds, such chlorine, fluorine, sulfur (tar sands, anyone?), and others in use by themselves or compounds and chemical reductive processes; or to accumulate radioactive materials in grand collections whose time-frames in consequence may as well be infinite to our life experiences.

Shit, we're like the dog in the old joke "Why does a dog lick its balls?" (Sorry ladies. I would have said 'genitalia' rather than 'balls' to be all-inclusive, but 'balls' just fits better with the simplicity of the joke.) We do things because 'we can'. Doesn't take a genius to figure it out, does it? And yet, it's the educated who foster these practices. And now we're saddled with the new god, 'science', who 'objectively' views nothing as sacred or truly worthy of ethical consideration and response.

blooming deserts 31.Oct.2015 09:19

Brent

This sort of thing has not just been happening on the Sahara. The driest desert on the planet (even drier than the Sahara) is the Atacama desert in South America. Here is what it looks like this year. Something similar is happening in Death Valley. It seems that the world will still have deserts, it is just that it seems like they will be moving around.
Atacama 1
Atacama 1
Atacama2
Atacama2
Death Valley
Death Valley

Patterns 31.Oct.2015 09:25

Brent

Will the United STates become one of the world's next big deserts?
Patterns
Patterns

Glacier 31.Oct.2015 09:30

Brent

Looking at the Sahara in High Resolution is just fascinating. Here is an image of a split glacier on a split mountaintop. The red dot on the inset image shows where this feature is located.
Eastern Glacier
Eastern Glacier

Some corrections 31.Oct.2015 11:38

Brent

There is fascinating weather pattern forming on the Sahara. It is something to watch.

Today is October 31st, 2015 and I have been scanning false color and high resolution true color images of the Sahara. My conclusions are as follows.
In a previous post I misinterpreted the colors on a the 'false color' image of the Sahara. It was blue. They looked like lakes. The true color high resolution polar orbital satellite images reveal that these are glaciers. There are also very subtle bright spots on the false color images. The high resolution true color images reveal that there is snow all over the western Sahara.

On the false color image of the Sahara high cold clouds are more blue colored, and any form of water is colored dark blue. This would include ice, and for this reason what looks like lakes that appeared on the desert are actually mountain glaciers.
'Blue Lakes' on the false color image
'Blue Lakes' on the false color image

High Resolution True Color Glaciers 31.Oct.2015 11:39

Brent

If we look at the same image, this time in high resolution true color, we find that these formations are not lakes, but are actually glaciers on the tops of mountains. These are new features that were not present in the past and have formed in response to the frozen temperature zone which has formed on the western Sahara, which is also something that has not been present in the past.
Glaciers (not lakes)
Glaciers (not lakes)

Locating More Glaciers 31.Oct.2015 11:43

Brent

It then becomes possible to correctly interpret the false color image so as to locate more glaciers, provided that the formations are large enough to show up at the lower resolution of the false color image.
False color image of glaciers
False color image of glaciers
True color high res of the same glaciers
True color high res of the same glaciers

locate snow and glaciers on the desert 31.Oct.2015 11:47

Brent

Glaciers show up as a blue color, while the snow shows up as brighter white areas on the false color image. We locate one glacier on the coast and two large snow patches.

In addition to seeing the true color image of the glacier along the coast we can also see snow banks between the sand dunes, and other snow patches.
The false color image
The false color image
True color glacier on the coast
True color glacier on the coast
True color image of snow patch on the right
True color image of snow patch on the right

Left Snow Patch 31.Oct.2015 11:49

Brent

True color image of the snow patch shown on the left of the false color image.
snow on the sahara sand dunes
snow on the sahara sand dunes

Scanning the area for more snow drifts and glaciers 31.Oct.2015 11:52

Brent

Assorted high resolution snow and ice images of this cold patch region on the sahara
Snow drifts and some thin glaciation on mountains
Snow drifts and some thin glaciation on mountains
more glaciation
more glaciation
another glacier forming
another glacier forming

Two small spots 31.Oct.2015 20:12

Brent

There are two small snow patches on the Sahara desert that have persisted for a month
September map, arrows point to cold spots
September map, arrows point to cold spots
Cold Spots persist to end of October
Cold Spots persist to end of October
Temperature scale
Temperature scale

Libyan snow patch 31.Oct.2015 20:14

Brent

This is what the snow patch (and some glaciation in the mountains in the middle of Libyan desert) looks like in high resolution true color (date October 31st, 2015)
Libyan snow patch
Libyan snow patch

Chad snow patch 31.Oct.2015 20:15

Brent

The southern spot on the deserts of Chad looks like this.
Chad snow patch
Chad snow patch

Impossible weather? A Question 31.Oct.2015 20:16

Brent

How can two small spots on the Sahara desert have a climate of their own. How can these two small spots of snow persist in the desert for a month surrounded by areas where the temperature is between 35 and 45 degrees celsius. How do these spots maintain their own climate out in the middle of that desert? Isn't this impossible?

Brent 01.Nov.2015 06:53

shaker

Do you have clues to elevations of the areas? Just wondering...

topography 02.Nov.2015 22:28

Brent

The topographical map indicates that the snow spot in Chad is in a valley, so it cannot be explained as being due to cooling at a high elevation. Similarly some of the snow drifts on the west coast are at an elevation close to sea level.
Topography
Topography

Small spot 02.Nov.2015 22:32

Brent

You can see how small that frozen spot is in the middle of the Central Sahara in Chad (blue arrow). It is this small frozen spot that I find so fascinating.
Spot
Spot

The spot as of Nov 2nd 02.Nov.2015 22:33

Brent

In this reduced resolution true color image you can see the snow banks on the desert as well as an oasis in a valley being fed by a river in the lower right corner. (November 2nd, 2015)
The frozen spot
The frozen spot

The frozen spot again 02.Nov.2015 22:34

Brent

The images are taken twice a day by the polar oribital satellite (which circles the poles while the earth rotates beneath) and because of the angle of inclination of the satellite relative to the earth the images can appear different. Here is a second lower resolution image of the same area from the second pass of the day (November 2nd, 2015).
2nd pass
2nd pass

Full res 02.Nov.2015 22:38

Brent

For the curious, here are both of todays images at their actual resolution. Each pixel represents one quarter of a kilometer (so these are not the super high resolution images that are possible, but even at this scale enough information is revealed. What this means that some of the structures you are seeing are actually very big, you can estimate the size by counting pixels in different angled images and then coming up with an average approximation).
One
One
Two
Two

counting pixels 02.Nov.2015 22:55

Brent

The snow patch at the top left appears to be about 50 kilometers wide and about 100 kilometers long (or about 5000 square kilometers).

Chad snow patch at sunset 03.Nov.2015 08:04

Brent

This late afternoon image, just before sunset, with the sun at an angle really shows that snow patch in chad (left edge of the image)
sun at an angle
sun at an angle

More snow falling in the west 03.Nov.2015 08:05

Brent

On November 3rd there is more snow falling on the western snow patch
snow in the west
snow in the west

true color Nov 3rd 03.Nov.2015 09:41

Brent

One of the best true color images of the Chad Snow Patch. The snow seems to be blowing around compared to yesterday. That is a lot of snow.
nov 3rd
nov 3rd

Snow clouds 03.Nov.2015 11:19

Brent

Snow clouds rolling into the western Sahara, sunset, November 3rd...that's beautiful
Snow clouds
Snow clouds