Temperature

http://tes.asu.edu/dust/

Hi,
You can use legends from this page to read colors.
[link] ?pid=13060

Hi again,
Really hate multiple posting.

I thought Mars was a cold place. According to:
this

and
this

if you enter the same date it was warmer on Mars than the mean temperature in Toronto.
Am I missing somethig?

Mars is cold, and very hot, hence, thats why theres frost everyday.

Thanks for the post, this is why i love this site.

Superinversion at the surface, a thin layer of CO2?

The temperature swing can be pretty wild -- from a maximum of about 80 degrees Fahrenheit at the equator to a minimum of about -200 F at the poles. But considering that Emperor Penguins can survive temperatures as low as -140 F in the Antarctic, Mars isn't all THAT inhospitable.

These surface temperatures are known since the Viking mission. I find it strange, that the daily noon 20°C surface temperature was never mentioned in public, nor at any press conference of any Mars mission!

Why? The public is only told of "very cold conditions" -150°C to -50°C. That is of course in some way correct as that is the atmospheric temperature which drops fast with that low pressure.

+20°C surface at 60° southern latitude:
[link]
http://www.mars-ice.org/spole_2pm_1.gif
http://www.mars-ice.org/slat_trends.gif

Hi

Does anyone have info on surface temperatures at Gusev and Meridiani, specifically, since the Rovers landed?

I ask because there are numerous images by both rovers that suggest that there might have been quite recent surface liquid flows at both locations. Lots of salts are in the soil and eutectic point calculations suggest that liquid brines could exist for short periods on possibly a daily basis; Many of the images have a wet or damp appearance; The orientation of many of the blueberries suggest placement along the edges of small streams; Water clouds have been imaged; BLobs of "mud" have been imaged several times, a texture that should not exist at the temperatures that are usually promoted as the standard surface temperatures of Mars; etc.

Yet we are very authoritatively told that these images are really only showing the effects of wind on very fine sand, presumably because it is too cold for water to exist at the surface.

It would be nice to know exactly what were the temperatures at soil level around spirit and opportunity over the past months.

Winston

Winston, there has been extensive discussions about wet/not wet textures here last year. In my opinion they were inconclusive. You'll have to do a search to find them but some threads were quite long.
On the one hand, the geochemists pointed out the strong limiting physical conditions to fluid flow at the surface. On the other hand (myself included) visual observation strongly supports 'wetness'.
So I agree with you, just following the visual evidence in the photos. I am hoping that sooner or later the official science people will publish some support for this tied to the detailed data collected, scans, temp. data etc.

Now that I think about it, the max/min temperature swing on Mars is almost identical to Earth's. On Mars, the temperature swing is from about 80 F to -200 F (a 280-degree F swing). On Earth it's about 140 F to -140 F (also a 280-degree F swing)

Thus while Mars is colder, its temperature extremes aren't all that different than Earth's.

The 20 C temperatures are a well known fact, just the press has to dumb everything down to the level of a 6 year old, so they do not talk about it. However, that is ground temperature. The think atmosphere holds very little thermal mass and actually functions like an insulator. The only way the round can lose heat is through direct IR radiation, which is not very efficient, so the ground can get quite warm. Again, Dr. Levin discusses this in GREAT detail.

Another point is that, above 7 millibars of atmospheric pressure, water does exist in a liquid phase between 0 and 10 C, so the fact that liquid water can not exist on the surface of mars is another over simplifcation by the media. It can exist for short periods of time at different locations, and seasonally liquid water could exist in the mid latitudes all day. The latitudes where water would be most stable as a liquid are the same latitudes where we see gully formation, I expect the two are related.

Heres the only ground temp graph that i know of from Opp. It is from Endurance.

If you look at the images that have the horizon, visible, a majority, will have "heat waves", a distortion of the image, that is most visible when the image is in its smaller, thumbnail mode.

The ground gets very warm, wait until summer.

It gets so warm, they shut down spirit, on THE Lander, for fear the circuits would Fry, from the Heat. They were very surprised.

I remember that one thermal imaging release from Endurance Crater, but, as I recall, there was no corresponding temperature key. Personally, I'd like to see additional thermal imaging information from both Rovers.

r lewis, of course I'm aware of Levin's research, which is also ignored by canonic science.

But do you know any press conference where the high surface temperatures where mentioned? I have seen many conferences via Internet video feed and never any scientists spoke about that. When they mentioned temperature, then everytime "very cold" , "-150°C" etc...

Tempature graph, for my post 11, i hope.

The colored dots in this image mosaic denote thermal data in features that make up the impact crater known as "Endurance." The data was taken by the miniature thermal emission spectrometer instrument on NASA's Mars Exploration Rover Opportunity. The information has been overlaid onto a view of the crater from the rover's navigation camera. Blue denotes cooler temperatures of about 220 degrees Kelvin (-63.67 degrees Fahrenheit or -53.15 degrees Celsius), and red denotes warmer temperatures of about 280 degrees Kelvin (44.33 degrees Fahrenheit or 6.85 degrees Celsius).

The surface temps on mars are actually higher than earth, and the thin atmosphere is also a well kept myth.. this is a grand conspiracy.

Thanks for the links to the temperature maps, a1call.
But there is no guarantee the same temperature legend works for the recent maps as the ones from 2004.
I really do not understand why they don't include a temperature legend with the maps.

Bob Clark

Hi Robert Clark,
Agreed my mistake. Thanks all for the info. If we are not misreading the high temps and we know there is humidity and frost, I can not see how liquid water could not exist at least at some parts at sometimes.

Hi,
With such a big difference in atmospheric and ground temps, why not use Peltier Thermoelectric Devices for power generatin in future missions? Would be less susceptible to dust and might even generate more power than the week sun.

This seems to be the 1st official paremeterized acknoledment of existance of super-zero temp.s on Mars.

Isn't it time to demand a retraction of the paper referenced in this article?

Hi a1call

Those old posts are quite interesting.

Re your last sentence above. I wonder if, in time, that paper and the refusal of NASA/JPL and mainstream science to acknowledge the possibility of puddles and current water on the surface, will be viewed as being much more egregious than Ron levin's apparent ability to determine that sloping areas are indeed flat?

Winston