Mars ice cap...

[Mojocvh]

Christopher Go has imaged the Red planet,

http://astro.christone.net/mars/index.html

quite interesting view of the [shrinking] polar ice cap...

[Eric Mc]

It's all those rovers.

[Mojocvh]

Eric Mc said:

It's all those rovers.

I thought Mars had already had it's global warming catastrophe...

[Eric Mc]

So did we.

55 million years ago there were no ice caps at all.

[Moonhawk]

Eric Mc said:

So did we.

55 million years ago there were no ice caps at all.

Indeed - it has happened several times in Earth's history.

http://en.wikipedia.org/wiki/Greenhouse_and_icehou...

Interestingly - Earth only spends about 20% of its time with permanent ice caps. The "greenhouse" state appears to be the normal state for this planet.

[Simpo Two]

Greenhouse, mmm. Could bloody do with one ths week! Maybe I'd get some grapes that were bigger than lentils too.

[Mojocvh]

4.5C ave today, still waiting to plant first crop of earlies ho hum.....

[moreflaps]

Moonhawk said:

Eric Mc said:

So did we.

55 million years ago there were no ice caps at all.

Interestingly - Earth only spends about 20% of its time with permanent ice caps. The "greenhouse" state appears to be the normal state for this planet.

I think your've got that wrong -UGS: "Four fairly regular glacial-interglacial cycles occurred during the past 450,000 years. The shorter interglacial cycles (10,000 to 30,000 years) were about as warm as present and alternated with much longer (70,000 to 90,000 years) glacial cycles substantially colder than present. "

Being ice bound is something we need to prevent because we seem to be due to leave the current warm period based on previous cycles...

[Eric Mc]

The earth has existed for 4.5 billion years. What has been the ice coverage in all that time?

[Gandahar]

Eric Mc said:

The earth has existed for 4.5 billion years. What has been the ice coverage in all that time?

This is about Mars, please keep on topic, there are plenty of threads where you can hit your keyboard in support of your chosen agenda.

Thanks

[Eric Mc]

What "agenda" is that?


Understanding what makes Mars' ice caps ebb and flow may well be very useful in helping us understand how ours fluctuate.

Please don't tell me what I can or can't post on thread please - especially when it is relevant.