Recent Changes

Monday, May 31

  1. page climate change project assessment edited Sea ​Sea ice is Sea ice may be contrasted with icebergs. Icebergs are compacted snow and fresh …
    Sea​Sea ice is
    Sea ice may be contrasted with icebergs. Icebergs are compacted snow and fresh water
    {http://www.digitaljournal.com/img/8/7/8/i/5/1/5/o/seaice.jpg}
    ...
    Internal ice stress is a measure of the compactness, or strength, of the ice.
    Sea Surface Tilt sveral factors contribute to differences in the ocean surface level, including uneven heating, salinity variations, and currents, especially near coastal regions or ice shelves. Differences in surface level result in sea-surface tilt, a force that influences the ice motion. This force is quite small compared to wind and current forces and is not important over periods of several days. However, over longer periods of months or years, sea-surface tilt can have a noticeable effect on sea-ice motion
    {http://www.aer.com/images/rc/heattrap_thumbb.gif}
    Sea
    {http://www.mar.dfo-mpo.gc.ca/science/review/e/html/2001/BIOImages/English/Jones-1.jpg} Sea ice in
    Sea ice has a bright surface, so much of the sunlight that strikes it is reflected back into space. As a result, areas covered by sea ice don't absorb much solar energy, so temperatures in the polar regions remain relatively cool
    Global conveyour belt is the the part of the large-scale ocean circulation that is driven by global density
    {http://www.mar.dfo-mpo.gc.ca/science/review/e/html/2001/BIOImages/English/Jones-1.jpg} The impact of fish populations surrounding GREENLAND due to the influx of fresh water from melting ice caps.​
    ​One of the main problems in Greenland is that the ice caps are melting down and the fresh water is going to the ocean, which makes multiple changes in the animal's habitat. This problem is increasing day by day because of global warming. Since 1950's scientist have postulated that the ice sheet covering the greenland may actually conceal three separate island land masses that have been bridged by glaciers over the last geologic cooling period which means that not only one land mass is melting away but three of them are. The following graph explain how is all this cycle formed. {http://maps.grida.no/library/files/ice-albedo-feedback-process.jpg} Ice-albedo feedback process (map/graphic/illustration) The impact of fish populations surrounding greenland due to the influx of fresh water from melting ice caps connects to the problem of climate change, because it shows the changes that the ocean and the aquatic population is suffering because of the influx of fresh water in the oceans. A perfect example of this problem is the migration of starfish, crayfish and sea, they are migrating to this part of the world because of they are very sensitive to temperatures changes, which implies that they must move from their actual habitats in order to survive. The big changes in the oceanic water is due to global warming which could be drawing unfamiliar fishes to the region because of the increasment of fresh water in the region, this could also be responsible for the spike in fresh fish seen off Greenland. Environmentalists and many climate scientists fear that if the climate heats up fast enough and melts off the remaining polar ice rapidly, the influx of freshwater could disturb ocean currents enough to drastically change the weather on the land, and it would be a problem for Greenland habitants and also for the whole environment and animals living near by.

    (view changes)
    8:25 am

Wednesday, May 26

  1. page climate change project assessment edited ... (28.8 °F). Sea ice may be contrasted with icebergs. Icebergs are compacted snow and fresh…
    ...
    (28.8 °F).
    Sea ice may be contrasted with icebergs. Icebergs are compacted snow and fresh water
    {http://www.digitaljournal.com/img/8/7/8/i/5/1/5/o/seaice.jpg}
    Sea ice is formed when water freezes because of the low temperatures.
    {http://nsidc.org/seaice/images/ice_formation.gif}
    Artic vs antartic
    they both differ because of the different geography, Moreover, the Arctic is a semi-enclosed ocean, almost completely surrounded by land. As a result, the sea ice that forms in the Arctic is not as mobile as sea ice in the Antarctic.
    ...
    albedo and sea ice
    The albedo of polar regions varies from that of open water to that of new snow, and encompasses the entire range of albedos found on the surface of the planet.
    {http://www.newint.org/features/2009/07/01/424-08-albedo-effect.jpg}
    albedo and sea ice vs open water
    The albedo for different surface conditions on the sea ice range widely, from roughly 85%of radiation reflected for snow-covered ice to 7% for open water. These two surfaces cover the range from the largest to the smallest albedo on earth. In the other hand open water is water that is unprotected, exposed and influenced by a variety of dangerous environmental conditions.
    forces acting on sea ice - circulation
    the five principal forces for sea ice formation are: wind, ocean currents, coriolis force, internal ice stress and sea suface tilt.
    Wind is the primary force responsible for ice motion, particularly at the timescale of days or weeks. The wind blowing on the top surface of the sea ice results in a drag force on the ice surface and causes the ice to drift.
    Ocean current force typically acts in the opposite direction of the wind force and acts as a drag on the wind-driven sea ice motion. Currents are an important factor in longer term monthly to yearly ice motion
    Coriolis force causes objects to accelerate because of the rotation of the earth it is small at scales of tens to hundreds of kilometers, but it does affect processes that occur at the global scale, such as ocean currents, winds, and ice motion.
    Internal ice stress is a measure of the compactness, or strength, of the ice.
    Sea Surface Tilt sveral factors contribute to differences in the ocean surface level, including uneven heating, salinity variations, and currents, especially near coastal regions or ice shelves. Differences in surface level result in sea-surface tilt, a force that influences the ice motion. This force is quite small compared to wind and current forces and is not important over periods of several days. However, over longer periods of months or years, sea-surface tilt can have a noticeable effect on sea-ice motion
    {http://www.aer.com/images/rc/heattrap_thumbb.gif}
    Sea ice in climate
    Sea ice has a bright surface, so much of the sunlight that strikes it is reflected back into space. As a result, areas covered by sea ice don't absorb much solar energy, so temperatures in the polar regions remain relatively cool
    Global conveyour belt is the the part of the large-scale ocean circulation that is driven by global density
    {http://www.mar.dfo-mpo.gc.ca/science/review/e/html/2001/BIOImages/English/Jones-1.jpg}

    (view changes)
    3:28 pm

Monday, May 24

  1. page climate change project assessment edited Sea ice is formed from ocean water that freezes. Because the oceans consist of saltwater, this occ…
    Sea ice is formed from ocean water that freezes. Because the oceans consist of saltwater, this occurs at about -1.8 °C (28.8 °F).
    Sea ice may be contrasted with icebergs. Icebergs are compacted snow and fresh water
    Sea ice is formed when water freezes because of the low temperatures.
    Artic vs antartic
    they both differ because of the different geography, Moreover, the Arctic is a semi-enclosed ocean, almost completely surrounded by land. As a result, the sea ice that forms in the Arctic is not as mobile as sea ice in the Antarctic.
    albedo is an object which can measure of how strongly it reflects light from light sources such as the Sun. It is defined as the ratio of total-reflected to incident electromagnetic radiation.
    albedo and sea ice
    The albedo of polar regions varies from that of open water to that of new snow, and encompasses the entire range of albedos found on the surface of the planet.

    (view changes)
    6:34 pm

Thursday, May 20

  1. page summary edited Some atmospheric basis air is a mixture of many discrete gasesm each has its own physical propert…
    Some atmospheric basis
    air is a mixture of many discrete gasesm each has its own physical properties. Clean, dry air is composed almost entirely of two gases, 78% nitrogen and 21% oxygen. the remaining 1% of dry air is mostly the inert gas argon. Air includes many gases and particles that vary significantly from thime to time and place to place.
    the amount of water vapor in the air varies considerably from practically none at all up to 4% by volume. the movements of the atmosphere are sufficient to keep a large quantity of solid and liquid particles suspended with in it.
    energy from the sun, all of the energy that drives earth;s variable weather and climate comes from the sun; Although these forms of energy comprise a major portion fo the total energy that radiales fromthe sun they are only part of a large array of energy called radiation or electromagnetic radiation.
    On average, about 50% of the solar enegy reaching the top of the atmosphere is absobed at earth's surface, another 30% is refflected back to space by atmosphere, clouds and reflective surfaces such as snow and water. THer remaining 20% is absorbed directly by clouds and the atmosphere's gases. Natural causes of climate change may varie of hypotheses, they have been proposed to explein climate change. Several have gained wide support, only to lose it and then sometimes to regain it again. some explanations are controversila but use all know that those changes are casused by greenhouse effect.

    (view changes)
    5:54 pm

Sunday, May 16

Sunday, April 18

  1. page australia's water problems edited ... -The eastern highlands, ranging from 1,000 to 7,000 ft in altitude -The central plains ... …
    ...
    -The eastern highlands, ranging from 1,000 to 7,000 ft in altitude
    -The central plains
    ...
    ft high
    {http://www.bom.gov.au/nmoc/bulletins/45/BMRC_MRPG_files/Image2.gif}
    {http://paws.wcu.edu/bkloeppel/images/watershed_management.gif} What is Watershed?
    (view changes)
    12:39 pm
  2. page australia's water problems edited ... {http://www.australia.edu/images/stories/australia_map_and_flag.jpg} Water scarcity is becom…
    ...
    {http://www.australia.edu/images/stories/australia_map_and_flag.jpg}
    Water scarcity is becoming an increasingly significant problem for many countries. Australia has one of the largest consuptions of water in the world. According to the international water managment institiute a very significant portion of the world is expected to suffer physical and economic scarcity by 2025. However Australia's water resources are highly variable and reflect the range of climatic conditions, and it is expected to change in the next years.
    Australias current population is 21,374,000. There are some plans for projects that the government is planning on doing
    Demographics... {http://www.adtorquenetwork.com/wp-content/uploads/2008/10/demographics1.jpg}
    Australia's life expectancy
    ...
    situation led to the development of the variety of flora.
    Australia's Topography...
    Meters {http://www.bom.gov.au/nmoc/bulletins/45/BMRC_MRPG_files/Image2.gif} Australia is divided into four regions:
    -A low, sandy eastern coastal plain
    -The eastern highlands, ranging from 1,000 to 7,000 ft in altitude
    -The central plains
    -The western plateau, covered with great deserts and bigger plains rising 1,000 – 2,000 ft high
    {http://www.bom.gov.au/nmoc/bulletins/45/BMRC_MRPG_files/Image2.gif}
    {http://paws.wcu.edu/bkloeppel/images/watershed_management.gif} What is Watershed?
    Watershed is a high land dividing to areas that are drained by two different rivers , it is also the
    region draining into a river, lake or other body of water.
    The big problem with australia and its water scarcity is because most of australia's water is salt water. Which makes it harder to process and make it fresh water. Another reason is that a most of australias land mass is dry and sandy, just lika a desert. And since we all know that desert gets no precipitation or just a little, the watershed is not that helpfull since it gets not that much precipitation.

    Hydrology Data...
    {http://www.epnrm.sa.gov.au/Portals/3//Uley%20South%20Conceptual%20Model.JPG} external image Uley%20South%20Conceptual%20Model.JPG
    WhatHydrologic data is Watershed?
    Watershed is a high land dividing to areas that are drained by two different rivers , it is also
    the region draining intoscientific study of the properties, distribution, and effects of water as a river, lakeliquid, solid, or other body of water.gas on the earth's surface, in the soil and underlying rocks, and in the atmosphere.
    Conclusion of data
    With all this data we have collectedIn conclusion, since australia is mostly covered by sand or desert type features and because of that it gets a little or no precipitation, we think that Australia will run out of water.the only thing that can be done to help the water scarcity is desalination. Some other possible solutions could be importing fresh water from other countries. Since australia's grandmass is mostly desert it would be hard and expansive to try to fix it with some methods that may not be worth it. So i think a good idea is keep working with the different rules that they are using now.
    Possible Solution
    One of the possible solution is turning all of the salt water around Australia to fresh water. This process is called desalination even though it is very expenive we think that it is worth it. This way Australian's will have water to drink.
    Important Facts...
    over 65% of australia's runoff in the three drainage divisions located in the sparsely populated tropical north
    australia has approximately 413,000 gigalitres of water available annualy
    (view changes)
    12:38 pm

Friday, April 16

  1. page australia's water problems edited ... Australia's Topography... Meters {http://www.bom.gov.au/nmoc/bulletins/45/BMRC_MRPG_files/Ima…
    ...
    Australia's Topography...
    Meters {http://www.bom.gov.au/nmoc/bulletins/45/BMRC_MRPG_files/Image2.gif}
    Hydrology DataData...
    {http://www.epnrm.sa.gov.au/Portals/3//Uley%20South%20Conceptual%20Model.JPG} external image Uley%20South%20Conceptual%20Model.JPG
    {http://www.epnrm.sa.gov.au/Portals/3/Figure2.jpg} Regional map showing major groundwater resources on EP
    Regional map showing major groundwater resources on EP
    What is Watershed?
    Watershed is a high land dividing to areas that are drained by two different rivers , it is also the region draining into a river, lake or other body of water.
    Conclusion of data
    With all this data we have collected we think that Australia will run out of water.
    Possible Solution
    One of the possible solution is turning all of the salt water around Australia to fresh water. This process is called desalination even though it is very expenive we think that it is worth it. This way Australian's will have water to drink.

    over 65% of australia's runoff in the three drainage divisions located in the sparsely populated tropical north
    australia has approximately 413,000 gigalitres of water available annualy
    at present australians extract about 70,000 gl and consume 25,000 gl of which 16,600 is used for agriculture
    What is a Watershed?
    Watershed is a high land dividing to areas that are drained by two different rivers , it is also the region draining into a river, lake or other body of water

    (view changes)
    12:56 am

Thursday, April 15

  1. page australia's water problems edited ... situation led to the development of the variety of flora. Australia's Topography... {http:/…
    ...
    situation led to the development of the variety of flora.
    Australia's Topography...
    {http://www.bom.gov.au/nmoc/bulletins/45/BMRC_MRPG_files/Image2.gif} Meters {http://www.bom.gov.au/nmoc/bulletins/45/BMRC_MRPG_files/Image2.gif}
    Hydrology Data
    {http://www.epnrm.sa.gov.au/Portals/3//Uley%20South%20Conceptual%20Model.JPG} external image Uley%20South%20Conceptual%20Model.JPG
    {http://www.epnrm.sa.gov.au/Portals/3/Figure2.jpg} Regional map showing major groundwater resources on EP
    Regional map showing major groundwater resources on EP

    over 65% of australia's runoff in the three drainage divisions located in the sparsely populated tropical north
    australia has approximately 413,000 gigalitres of water available annualy
    (view changes)
    7:35 am
  2. page australia's water problems edited ... with South America, India, Africa and Antartica. The conditions of the geographic situation l…
    ...
    with South America, India, Africa and Antartica. The conditions of the geographic
    situation led to the development of the variety of flora.
    Australia's Topography...
    {http://www.bom.gov.au/nmoc/bulletins/45/BMRC_MRPG_files/Image2.gif}

    over 65% of australia's runoff in the three drainage divisions located in the sparsely populated tropical north
    australia has approximately 413,000 gigalitres of water available annualy
    (view changes)
    7:20 am

More