Temperature and pressure at Gale, Suitable (for short periods) for liquid water? |
Temperature and pressure at Gale, Suitable (for short periods) for liquid water? |
Sep 30 2012, 03:23 PM
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#1
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Junior Member Group: Members Posts: 62 Joined: 11-July 11 Member No.: 6058 |
Just a quick query from someone with no background in science. Obviously, MSL has AFAIK not returned evidence of recent (i.e. years/decades) liquid water in its vicinity; however, I was interested by the following graphs:
08.21.2012: First Pressure Readings on Mars http://mars.jpl.nasa.gov/msl/multimedia/images/?ImageID=4501 08.21.2012: Taking Mars' Temperature http://mars.jpl.nasa.gov/msl/multimedia/images/?ImageID=4502 The first indicates that the pressure between 15 Aug and 18 Aug never dropped below c. 690 millibars; the second shows that, for a period of a couple of hours on 16 Aug, the temperature rose above freezing. If water had been present on the surface, then, would it have been liquid during this brief period? The pressure and temperature seemed to satisfy the conditions for liquid water as I understand them (indeed, the pressure seems to be high enough (just) on a 24-hour basis to allow for the presence of liquid water). Thanks in advance for your opinions (corroborative or not!) on this. |
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Nov 1 2012, 09:46 AM
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Member Group: Members Posts: 156 Joined: 18-March 05 From: Germany Member No.: 211 |
Dear all,
I am trying to find out if it is possible to access the REMS data files somewhere. The data are displayed here and here and you can also view past data on the latter page. However, instead of copying all these values by hand, it would be great to be able to read the REMS data from the XML files directly and automatically to create a time series of e.g. the max and min temperatures. I found that the current data are located in this XML file: http://cab.inta-csic.es/rems/rems_weather.xml Does anybody know if it possible to access past data as well? I could not find any links on the respective websites. Cheers, Michael |
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Nov 1 2012, 03:37 PM
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#3
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
Does anybody know if it possible to access past data as well? If you view the page source for marsweather.com in html and follow some links, you can find the Sol data in xml format at http://data.marsweather.com/rems_climate.xml, but you may want to check with marsweather.com as to what their policy is on credit notices if you post a rendering of the data elsewhere. You can post a message on their blog asking questions like that. |
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Nov 1 2012, 04:16 PM
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#4
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Member Group: Members Posts: 156 Joined: 18-March 05 From: Germany Member No.: 211 |
Thanks Marsophile!
That is exactly what I had been unable to find! I do not plan to post diagrams. It is purely out of personal interest. Maybe I will will use a graph for a presentation in a few weeks where I will certainly acknowledge the source of the data. Otherwise I will ask just as you recommend. Cheers Michael |
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