Week 11, the atmosphere and water levels
Week 11, the atmosphere and water levels ENVS 101 004
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This 3 page Class Notes was uploaded by Bianca Notetaker on Tuesday November 3, 2015. The Class Notes belongs to ENVS 101 004 at University of New Mexico taught by Priewisch in Summer 2015. Since its upload, it has received 21 views. For similar materials see The Blue Planet in Environmental Science at University of New Mexico.
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Date Created: 11/03/15
1132015 OneNote Online The Atmosphere Tuesday October 27 2015 1003 AM o The habitable planet 0 The atmosphere is Gaseous envelope that surrounds a celestial body 0 Air invisible odorless mixture of gases and suspended particles 0 Earths atmosphere is made of air 0 Earths lifesupporting atmosphere Can create wind and weather systems Generate ocean currents Protects us from radiation Stores moisture and solar energy Past atmospheres o Accretion Primary atmosphere of earth 0 Later volcanic out gassing Secondary atmosphere of earth containing methane nitrogen C02 hydrogen and acid rain with no molecular oxygen 0 Earth cooled Can hold a gaseous atmosphere Chemical evolution of the atmosphere 0 The carbon cycle and oxygen are interconnected Plants produce organic matter carbon based they take in C02 and in turn produce oxygen 0 Removal of carbon dioxide Carbon is fixed into limestone rock cycle Fixed into buried organic sediment tectonic cycle Carbon sequestration Longterm removal of Carbon from the atmosphere Composition of the atmosphere 0 Water vapor is humidity from evaporation o Aerosols tiny suspended liquid or solid particles Greenhouse gases 0 Infrared rays from the sun make it to the quotroofquot of the greenhouse trapping the Rays inside leading to an increase in temperature Temperatures of the atmosphere 0 Troposphere temperature decreases with altitude Bottommost layer Most of our weather occurs here 0 Stratosphere temperature warms with altitude 2nd layer from bottom This is the ozone layer Its actually layered with dense cold air on bottom less dense warmer air on top 0 Mesosphere the coldest layer of the atmosphere 2nd layer from the top 0 Thermosphere temperature increases massively Farthest layer from the ground Temperature is so high because the radiation is most intense here The ionosphere containing aurora borealis is found here Air pressure 0 Force exerted by the weight of the overlying air 0 Highest at Earth39s surface httpsonenoteofficeappsivecomoonenoteframeaspxFiSDE50F6024D8D962EO426ampHemuampC5810SN2SKYWACWSHIampuienUSamprs 12 1132015 OneNote Online 0 Decreases with altitude meaning there are less oxygen molecules available 0 Measured with a barometer Changes in air pressure indicates a change in weather Moisture in the atmosphere 0 Water exists in all three states solid liquid gas 0 A fundamental process in weather and the hydrologic cycle EX evaporation condensation etc Warm air can hold more moisture 0 Relative humidity The amount of water vapor in under saturated air Dew point the temperature at which relative humidity reaches 100 Dew occurs if ground is cold Frost occurs if ground below is freezing f temperature rises relative humidity drops When it39s below 100 evaporation takes place Cloud formation 0 Visible aggregates of minute water droplets ice crystals or both 0 A phenomena of the troposphere 0 There are four cloud forming processes Density warm low density air rises convectively and lifting displaces cool dense air Frontal Two flowing air masses of different density meet lifting forcing one to rise over the other Orographic Flowing air is forces upward due to terrain lifting Convergence Flowing air masses converge and both are forced lifting upward leading to the formation of clouds Cloud types 0 Classified based off shape altitude and height Cumulus and puffy individual clouds with a flat base the flat Stratocumulus part indicates humidity levels Stratus and Spread laterally rather than vertically these Nimbostratus mean rain httpsonenoteofficeappsivecomoonenoteframeastFiSDE50F6024D8D962EO426ampHemuampC5810SNZSKYWACWSHIampuienUSamprs 22 1132015 OneNote Online Water levels Tuesday October 27 2015 936 AM Shorelines and coastlines o Zones of dynamic activity marked by erosion and the creation of transport 0 Coastal erosion tends to have significant impacts on human interest Transportation Fishing Tourism Harbors Structural responses to coastal erosion 0 Hard stabilization Jetties rocks that get piled on top of each other their main purpose is to slow down wave action Breakwater help to preserve the stretch of beach so it39s not carried away by current 0 Soft stabilization Planting helps hold sand and sediment together Beach nourishment mud from the ocean floor gets blasted back onto the beach Construction vehicles distribute the sand Changing sea level 0 Submergence rise of sea level relative to land 0 Emergence lowering of sea level relative to land 0 Cycles of submerge nice and emergence are related to the buildup of ice and its cycles 0 Melting of ice and sea level If all the ice locked in the cryosphere melts the sea level would be approximately 65 meters higher 0 Melting of sea ice and sea level Melting of sea ice doesn39t have an extreme effect on sea level It would dilute ocean water and dramatically effect NADW formation The ocean and society 0 Natural resources Undersea mining Coastal sedimentary rocks hoar productive oilbearing deposits which leads to offshore drilling 0 Travel and transport Cruise ships Shipping 0 Climate moderator most important thing ocean does for us httpsonenoteofficeappslivecomoonenoteframeastFiSDE50F6024D8D962EO426ampHemuampC5810SN2SKYWACWSHIampuienUSamprs 11