Talk:Planum Australe
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An entry from Planum Australe appeared on Wikipedia's Main Page in the Did you know? column on October 27, 2006. |
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[edit] Global warming on Mars
The article states: "It is possible that the area of this ice cap may be shrinking due to Martian global warming". The cited reference (RealClimate.org) takes the view that the ice cap variations are not part of a global phenomenon. The statement in the article doesn't tally with its cited source. Sci1 10:38, 27 October 2006 (UTC)
- Fixed. MER-C 11:05, 27 October 2006 (UTC)
A key primary reference here is the Colaprete Nature paper:
- A. Colaprete et al. (12 May 2005). "Albedo of the south pole on Mars determined by topographic forcing of atmosphere dynamics". Nature 435: 184–188. DOI:10.1038/nature03561.
but this citation may be too academic for the style of the article, and the full text isn't available free of charge. Sci1 13:40, 27 October 2006 (UTC)
[edit] out of context
It's out of context. My impression was global warming in Mars not earth, where the link points to. Or How is Earth's global warming affecting Mars??!! The link is misleading.--Jondel 10:50, 27 October 2006 (UTC)
- Yes, I realised that and can't think of an appropriate way to fix it, yet want to include a link anyway. I've addressed the two concerns above. MER-C 11:02, 27 October 2006 (UTC)
- The link is to a RealClimate.org article called Global warming on Mars?. The article takes the view that the Martian ice cap variations are not part of a Martian global effect. Sci1 11:12, 27 October 2006 (UTC)
[edit] HUH???
What does this mean?
The centre of the permanent ice cap is not located at 90°S but rather approximately 150 kilometres north and west from the geographical south pole.
I know what it means to be 150 kilometers north of the geographic south pole. It means somewhere on the circle 150 kilometers from the south pole. It is another way of saying the latitude. What I don't know is what it means to be west of the south pole. Does anyone? —The preceding unsigned comment was added by Djfeldman (talk • contribs).
- What I'm trying to refer to is the western hemisphere of Mars (so you end up going north on, let's say, the longitude line of 90°W). Could you think of something better? MER-C 04:42, 28 October 2006 (UTC)
[edit] Snow?
Is this article correct. Does snow (Actual precipitation) fall in this area. If so how many mm anually. If there is any data on this it should be added. —The preceding unsigned comment was added by 58.108.21.129 (talk • contribs).
- This is most likely to be dry ice condensing out of the atmosphere (which is precipitation). This then sublimates off in the summer.
- The closest thing I could find to actual figures was Karatekin, Ö.; Van Hoolst, T.; Dehant, V. (2006) Martian global-scale CO2 exchange from time-variable gravity measurements, Journal of Geophysical Research DOI:[1] which gave absolute numbers in mass over a nine-year data set. So there aren't any figures for the amount of precipitation in millimetres yet. MER-C 05:22, 10 December 2006 (UTC)
