Featured Research

from universities, journals, and other organizations

Holiday Weather On Mars

Date:
August 14, 2003
Source:
European Space Agency
Summary:
Over its four-year lifetime, Mars Express will be returning data to refine the latest computer models of the Martian climate. It will be closely watching the clouds, fog, dust devils, and storms, looking for clues to explain the climate changes on Mars, now and in the past, and to better prepare us for future missions.

Over its four-year lifetime, Mars Express will be returning data to refine the latest computer models of the Martian climate. It will be closely watching the clouds, fog, dust devils, and storms, looking for clues to explain the climate changes on Mars, now and in the past, and to better prepare us for future missions.

Related Articles


ESA scientists are already working to make sure that future missions to Mars arrive safely, and that future human explorers know what kind of weather to expect. They have developed a global atmospheric circulation model for Mars, which uses the same principles as those used to predict weather on Earth. Weather data sent back from Mars Express will help us to perfect these Martian weather forecasts.

This winter, the weather will be similar to that of the Earth, but colder. Mars Express will experience cold, cloudy mornings and cool, hazy afternoons. Some of the clouds could be made of water-ice crystals, but most clouds are made of crystals of carbon dioxide, or 'dry ice'.

Temperatures will fall below –125C but, because there is not enough moisture in the atmosphere to produce a significant amount of snow, Beagle 2 itself will not see a 'white Christmas'.

One of the main investigations carried out by Mars Express will be the global study of the atmospheric circulation and composition. Its instruments will also search for water, from just below the surface to the upper reaches of the atmosphere. ESA scientists hope that the instruments on board Mars Express will detect the presence of water below the surface, and may answer the question of whether there has ever been life on Mars.

Like Earth, Mars has a summer season too, but this is very different from the heatwaves that many of us are now experiencing in Europe. If you are on vacation, spare a thought for a future holidaymaker on Mars. With maximum temperatures reaching only 0C, and plunging to –80C at night, this is as cold as Antarctica in winter.

However, the summer temperatures do melt the carbon dioxide ice that make up the polar ice caps, and the atmosphere gets thicker. This raises the typical air density to about that of Earth's atmosphere at 25 000 metres where only the highest-flying research aircraft have ventured.

However, even this atmosphere is still too thin to protect us from the incoming radiation from space, such as ultraviolet light, X-rays and gamma rays, or charged particles such as protons and electrons. On this dry, cold world, human holidaymakers will have a different set of weather concerns, not least exposure to these harshest elements of space weather.

Unlike Earth, which sits inside a protective magnetic shield called the magnetosphere, Mars does not have a global magnetic field to protect it from solar flares and cosmic rays. Solar protons pose the biggest threat to us because they ionise molecules along their tracks. These can be very damaging when passing through humans and they pose a long-term health risk.

Scientists do not yet know why Mars's magnetic field disappeared about 4000 million years ago. Since then, the solar wind has gradually eroded the Martian atmosphere so that today it is less than 1% as thick as that of the Earth.

With radiation hazards, tissue damage and sunburn, Mars sounds like a dangerous place to go on holiday. You can leave your umbrella on Earth, but remember to take your Geiger counter!


Story Source:

The above story is based on materials provided by European Space Agency. Note: Materials may be edited for content and length.


Cite This Page:

European Space Agency. "Holiday Weather On Mars." ScienceDaily. ScienceDaily, 14 August 2003. <www.sciencedaily.com/releases/2003/08/030814072051.htm>.
European Space Agency. (2003, August 14). Holiday Weather On Mars. ScienceDaily. Retrieved April 1, 2015 from www.sciencedaily.com/releases/2003/08/030814072051.htm
European Space Agency. "Holiday Weather On Mars." ScienceDaily. www.sciencedaily.com/releases/2003/08/030814072051.htm (accessed April 1, 2015).

Share This


More From ScienceDaily



More Space & Time News

Wednesday, April 1, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Universe Could Be Full Of Tatooine Sunsets

The Universe Could Be Full Of Tatooine Sunsets

Newsy (Mar. 30, 2015) University of Utah researchers say mathematical simulations show small, rocky planets, like Tatooine from "Star Wars," can form in dual-star systems. Video provided by Newsy
Powered by NewsLook.com
What NASA Wants To Learn From Its 'Year In Space' Tests

What NASA Wants To Learn From Its 'Year In Space' Tests

Newsy (Mar. 28, 2015) Astronaut Scott Kelly and cosmonaut Mikhail Kornienko will spend a year in space running tests on human physiology and psychology. Video provided by Newsy
Powered by NewsLook.com
Raw: Astronauts Arrive at ISS for 1-Year Mission

Raw: Astronauts Arrive at ISS for 1-Year Mission

AP (Mar. 28, 2015) The capsule carrying a Russian and an American who are to spend a year away from Earth docked Saturday with the International Space Station. (March 28) Video provided by AP
Powered by NewsLook.com
Crew Starts One-Year Space Mission

Crew Starts One-Year Space Mission

Reuters - News Video Online (Mar. 28, 2015) Russian-U.S. crew arrives safely at the International Space Station for the start of a ground-breaking year-long stay. Paul Chapman reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins