IPB

Welcome Guest ( Log In | Register )

The Storm, Dust storm of 2007
OWW
post Jul 5 2007, 05:57 PM
Post #1


Member
***

Group: Members
Posts: 710
Joined: 28-September 04
Member No.: 99



Oh no...This is getting bad:

The new and potentially bleak outlook is a stark shift from the prognosis earlier this week.

The dusty squall has reduced direct sunlight to Mars' surface by nearly 99 percent, an unprecedented threat for the solar-powered robotic explorers. If the storm keeps up and thickens with even more dust, officials fear the rovers' batteries may empty and silence the robotic explorers forever.

Opportunity's energy-gathering ability has been slashed to a dangerous 280 watt-hours-enough power to light only three 90-watt light bulbs.

"The worst-case scenario is that enough dust in the sky decreases solar energy to the point that we have to shut down too many things to save power," Lemmon said. "The rovers keep their battery alive by keeping their electronics alive."


"The reality of the situation is that we're limited as to what we can do from the ground by cutting power use," Callas said. "If it continues to worsen and stay that way, it's a survivability issue for Opportunity. If Mars wants to kill the rovers, it can."

http://www.space.com/news/070705_dusty_rovers.html
Go to the top of the page
 
+Quote Post
 
Start new topic
Replies
climber
post Jul 11 2007, 02:41 PM
Post #2


Senior Member
****

Group: Members
Posts: 2922
Joined: 14-February 06
From: Very close to the Pyrénées Mountains (France)
Member No.: 682



I was wondering if we have, here on Earth, the equivalent of Marsian's dust storms?
For exemple, dusts coming from deserts that goes very high in our atmosphere where the pressure could be comparable to what it is on Mars?


--------------------
Go to the top of the page
 
+Quote Post
tty
post Jul 11 2007, 02:55 PM
Post #3


Member
***

Group: Members
Posts: 688
Joined: 20-April 05
From: Sweden
Member No.: 273



QUOTE (climber @ Jul 11 2007, 04:41 PM) *
I was wondering if we have, here on Earth, the equivalent of Marsian's dust storms?
For exemple, dusts coming from deserts that goes very high in our atmosphere where the pressure could be comparable to what it is on Mars?


Desert dust certainly can spread quite far. For example a fair amount of the soil on Bermuda is very fine saharan dust accumulated over hundreds of thousands of years. However terran "weather" in almost all forms very largely happens in the troposphere. For example despite the vast amount of salt spray created continuously over the oceans essentially nothing gets into the stratosphere (otherwise the sky at twilight would be yellow from the Na and the ozone layer would be destroyed by the Cl).

About the only exceptions is material from volcanic eruptions and large impacts which gets injected into the stratosphere with consequent climate effects extending over years (dust in the troposhere is washed out by rain fairly quickly).
Go to the top of the page
 
+Quote Post

Posts in this topic
- OWW   The Storm   Jul 5 2007, 05:57 PM
- - kungpostyle   This is starting to look like it might need it...   Jul 5 2007, 06:32 PM
- - helvick   99% drop in direct beam flux is Tau of around 5.2....   Jul 5 2007, 06:49 PM
- - Bobby   I saw this article on Yahoo News and thought every...   Jul 5 2007, 06:59 PM
- - Stu   Hope this doesn't get any worse... don't w...   Jul 5 2007, 08:11 PM
- - mchan   It would be awesome if the pictures can show somet...   Jul 5 2007, 08:26 PM
- - Stu   I know there's no way we'd ever get pics l...   Jul 5 2007, 08:31 PM
- - Oren Iishi   Can the rover be shut down until the storm passes?...   Jul 5 2007, 08:46 PM
- - MarsIsImportant   Yes, but the heaters need to be on to keep the ele...   Jul 5 2007, 09:04 PM
- - Tom Tamlyn   What is the impact of the storm on dust deposition...   Jul 5 2007, 09:32 PM
- - djellison   Strangely, if I get this right - regional dust sto...   Jul 5 2007, 09:37 PM
- - ngunn   It must all fall down when the wind stops. If it c...   Jul 5 2007, 09:51 PM
- - djellison   What happened after the, admitedly much more modes...   Jul 5 2007, 09:56 PM
|- - helvick   QUOTE (djellison @ Jul 5 2007, 10:56 PM) ...   Jul 5 2007, 11:49 PM
- - Sunspot   Are there any pictures of the dust storm anywhere?...   Jul 5 2007, 10:06 PM
|- - slinted   QUOTE (Sunspot @ Jul 5 2007, 03:06 PM) Ar...   Jul 5 2007, 11:05 PM
- - Pavel   Would not the air be warmer if the airborne dust i...   Jul 5 2007, 10:34 PM
- - djellison   That's true - I remember the depths of Spirits...   Jul 5 2007, 10:39 PM
|- - ustrax   it is my oppinion that if Oppy survives this we sh...   Jul 5 2007, 10:53 PM
- - Tom Tamlyn   Is the MRO's Mars Climate Sounder able to retu...   Jul 5 2007, 11:17 PM
- - john_s   Here's another nice site for amateur images of...   Jul 5 2007, 11:53 PM
- - slinted   Dr. Lemmon has an update on his dust devil page, w...   Jul 6 2007, 12:22 AM
|- - Pando   QUOTE (slinted @ Jul 5 2007, 05:22 PM) Dr...   Jul 6 2007, 03:20 AM
|- - fredk   QUOTE (Pando @ Jul 6 2007, 03:20 AM) Tau ...   Jul 6 2007, 04:17 AM
- - Astro0   Just got some feedback that Sol 1225 Tau is 4.125....   Jul 6 2007, 05:24 AM
|- - Tesheiner   QUOTE (Astro0 @ Jul 6 2007, 07:24 AM) Jus...   Jul 6 2007, 10:59 AM
|- - diane   QUOTE (Astro0 @ Jul 6 2007, 12:24 AM) Jus...   Jul 6 2007, 05:17 PM
- - Stu   Murky sky... hang on in there, Oppy...   Jul 6 2007, 05:30 AM
- - Bobby   The dust storm has delayed Oppy from entering Vict...   Jul 6 2007, 05:52 AM
- - djellison   What with the stuck shoulder joint heater, 255 is ...   Jul 6 2007, 07:25 AM
- - belleraphon1   Dust storm.... high tau...... high winds..... Kno...   Jul 6 2007, 11:54 AM
- - sattrackpro   There is an interesting article about dust storms ...   Jul 6 2007, 12:24 PM
- - helvick   Multiple major storms do happen in some years - th...   Jul 6 2007, 01:03 PM
- - mhoward   At least she was still taking pictures on sol 1225...   Jul 6 2007, 01:54 PM
|- - tedstryk   Speaking of Hubble, it will look at Mars near the ...   Jul 6 2007, 01:57 PM
|- - Analyst   QUOTE (mhoward @ Jul 6 2007, 01:54 PM) .....   Jul 6 2007, 02:07 PM
|- - centsworth_II   QUOTE (Analyst @ Jul 6 2007, 10:07 AM) Ve...   Jul 6 2007, 02:24 PM
- - hortonheardawho   colorized Spirit sol 1244 ( July 4, 2007 ) L0 1x2:...   Jul 6 2007, 02:37 PM
- - dvandorn   I'm actually a little more worried about Spiri...   Jul 6 2007, 06:07 PM
- - akuo   Some new information in this National Geographic a...   Jul 7 2007, 12:26 AM
- - kungpostyle   Jake seems confident; best rover news I've he...   Jul 7 2007, 12:41 AM
- - mhoward   A handful of sol 1226 images are online. Just sola...   Jul 7 2007, 01:45 AM
- - MarsIsImportant   Sol 1226...look how clean the rover looks! ht...   Jul 7 2007, 05:02 AM
|- - belleraphon1   QUOTE (MarsIsImportant @ Jul 7 2007, 01:0...   Jul 7 2007, 11:56 PM
|- - belleraphon1   OK - doing a total inline quote is one thing - doi...   Jul 7 2007, 11:59 PM
- - CosmicRocker   She looked very clean, but that image should be fr...   Jul 7 2007, 06:40 AM
- - Sunspot   www.spaceweather.com reports the storm has intensi...   Jul 7 2007, 07:36 AM
- - djellison   Strong winds with the storm mean that Opportunity...   Jul 7 2007, 07:55 AM
- - vikingmars   As a reminder, here are the fully calibrated compa...   Jul 7 2007, 12:11 PM
- - Stu   Hey, welcome back vikingmars! Missed your gorg...   Jul 7 2007, 01:33 PM
- - deglr6328   how do we know how high the winds are at the surfa...   Jul 7 2007, 01:39 PM
- - djellison   Well - from the rovers we don't really. For d...   Jul 7 2007, 01:42 PM
- - CosmicRocker   Yes, whatever goes up must come down, but thanks t...   Jul 8 2007, 06:24 AM
- - djellison   another sols info on Marks page.   Jul 8 2007, 02:56 PM
|- - clt510   QUOTE (djellison @ Jul 8 2007, 09:56 AM) ...   Jul 9 2007, 01:57 PM
|- - centsworth_II   QUOTE (clt510 @ Jul 9 2007, 09:57 AM) ......   Jul 9 2007, 02:42 PM
- - Tesheiner   Let´s hope for this descending trend in the tau va...   Jul 9 2007, 04:10 PM
- - CosmicRocker   The early trend is in the hoped-for direction, but...   Jul 10 2007, 04:55 AM
|- - Pando   QUOTE (CosmicRocker @ Jul 9 2007, 09:55 P...   Jul 10 2007, 06:33 AM
- - djellison   Ignore the last Opportunity point - that's my ...   Jul 10 2007, 07:17 AM
- - jaredGalen   Out of curiosity, to reach Tau levels as we saw he...   Jul 10 2007, 09:54 AM
- - Tom Tamlyn   During Monday's Phoenix Mission press conferen...   Jul 10 2007, 02:38 PM
|- - centsworth_II   QUOTE (Tom Tamlyn @ Jul 10 2007, 10:38 AM...   Jul 10 2007, 02:48 PM
- - Pando   To cut down power consumption, they would also nee...   Jul 10 2007, 03:56 PM
- - Tom Tamlyn   Emily has posted a comprehensive discussion on her...   Jul 10 2007, 04:29 PM
|- - jaywee   QUOTE (Tom Tamlyn @ Jul 10 2007, 06:29 PM...   Jul 10 2007, 06:19 PM
- - MarsIsImportant   I've been looking for images of the magnets on...   Jul 10 2007, 07:08 PM
- - OWW   The first two are both from Sol 1217 and the last ...   Jul 10 2007, 07:46 PM
|- - MarsIsImportant   QUOTE (OWW @ Jul 10 2007, 02:46 PM) The f...   Jul 10 2007, 08:25 PM
|- - Tman   QUOTE (MarsIsImportant @ Jul 10 2007, 10...   Jul 10 2007, 09:19 PM
|- - Floyd   QUOTE (MarsIsImportant @ Jul 10 2007, 04...   Jul 10 2007, 10:52 PM
- - djellison   Yup - raw images 101. The date something appears a...   Jul 10 2007, 08:13 PM
- - Tom Tamlyn   jaywee, Helvick, the forum expert on Martian sola...   Jul 10 2007, 08:21 PM
- - djellison   http://midnightmarsbrowser.blogspot.com/ Get it. ...   Jul 10 2007, 08:27 PM
- - CosmicRocker   I just noticed this Aviation Week Article dated Ju...   Jul 10 2007, 08:58 PM
- - elakdawalla   Hi guys, I went to the Mars meeting at Caltech tod...   Jul 10 2007, 09:16 PM
- - Ant103   Hi all A few times without posting because I...   Jul 10 2007, 09:18 PM
- - helvick   That 255 whr figure for Sol 1225 is bugging me (So...   Jul 10 2007, 10:12 PM
|- - fredk   QUOTE (helvick @ Jul 10 2007, 10:12 PM) T...   Jul 11 2007, 12:06 AM
|- - Astro0   'helvick' said that figure is "buggin...   Jul 12 2007, 03:20 AM
- - hendric   Is it possible that the Tau reading is just a sing...   Jul 11 2007, 05:14 AM
|- - Pertinax   QUOTE (hendric @ Jul 11 2007, 01:14 AM) I...   Jul 11 2007, 12:29 PM
- - edstrick   high dust opacity drops daytime temperatures, but ...   Jul 11 2007, 10:51 AM
- - helvick   Thanks for the input folks. The MER team's Ta...   Jul 11 2007, 01:56 PM
- - Pertinax   For fun, a question that I can probably dig for an...   Jul 11 2007, 02:06 PM
- - climber   I was wondering if we have, here on Earth, the equ...   Jul 11 2007, 02:41 PM
|- - tty   QUOTE (climber @ Jul 11 2007, 04:41 PM) I...   Jul 11 2007, 02:55 PM
- - helvick   QUOTE Pertinax wrote: It would be fascinating data...   Jul 11 2007, 02:43 PM
- - djellison   Saharan dust landing on cars in the UK isn't u...   Jul 11 2007, 03:20 PM
- - Oersted   The Sirocco: Some nice pics here of the dust blow...   Jul 11 2007, 09:22 PM
- - djellison   Infact -thinking about it - I remember finding com...   Jul 11 2007, 09:31 PM
|- - climber   QUOTE (djellison @ Jul 11 2007, 11:31 PM)...   Jul 11 2007, 09:43 PM
- - J.J.   A similar phenomenon we have here is "muddy r...   Jul 11 2007, 09:44 PM
- - fredk   The latest navcam shows several changes in the tra...   Jul 12 2007, 03:44 PM
- - helvick   Thanks for the confirmation Astr0. I'm going t...   Jul 12 2007, 04:38 PM
- - OWW   According to this report on space.com the dust sto...   Jul 12 2007, 05:04 PM
|- - Shaka   QUOTE (OWW @ Jul 12 2007, 07:04 AM) Accor...   Jul 12 2007, 06:51 PM
- - Ant103   Good eyes fredk. I'm going to make an animatio...   Jul 12 2007, 05:58 PM
- - fredk   It occurs to me after comments in the Spirit threa...   Jul 12 2007, 07:34 PM
- - fredk   From Lemmon's dust devil page, Oppy is stable ...   Jul 12 2007, 09:45 PM
6 Pages V   1 2 3 > » 


Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 31st October 2024 - 11:44 PM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member.