the proto planetary disc, from which the earth is made, was composed of hhydrogen hehelium nnitrogen...
TRANSCRIPT
The proto planetary disc, from which the earth is made,was composed of
H HydrogenHe HeliumN NitrogenO Oxygen
and other elements &simple molecules.
THE ATMOSPHERE IS IN CONSTANT TRANSITION
THE ATMOSPHERE1
As the gases collected around orbiting bodies, they formed new gas compounds,H2 Diatomic HydrogenO2 Diatomic OxygenCH4 MethaneNH3 Ammonia
CO Carbon monoxideCO2 Carbon dioxideH2O Water
GreenhouseGases
THE ATMOSPHERE2
From these gases came more complex organic compounds,including, carbon rings, helixes and amino acids.
OUTER PLANETSFurther from Sun
Out Gasing
H2 Escapes due to heat & gravity of sun,leaving an H2 depletedatmospere…
Out Gasing H2 remains from low temp & local gravity. It reacts with out gases, forming an H2 rich
atmosphere
INNER PLANETSCloser to the Sun
PlanetFormation
SunThe planetary disc dissipates under theinfluence of gravity and heat, condensinginto the sun, or around gas giants, exitingthe inner planets.
THE ATMOSPHERE3
Mantle
Ocean
Volcanic Rupture
SubductionZone
THE OUT GASING OF THE ATMOSPHERE
Out gasing from the interior of the geosphere blends in with theprimordial, planetary disc gases,to form the first atmosphere.
As rock-metals are heated and pressurized from the compressingplanet, they change in composition,releasing gases.
The gases are expelled throughvolcanic ruptures and geologicrifts. The force of gravity onEarth is such that it can hold themost gases in a gaseous state, w/in thenormal range of earth temperatures.
Gases released intoThe atmosphere
OUT GASING
Each of the gases of the Atmosphereplays a role in converting the sun’sEnergy into usable energyA. Oxygen is highly combustible
and chemically reactive.B. Nitrogen is much less so. The
ratio of about 4:1 preventsOxygen from being too reactive
C. As Hydrogen reduced, free Oxygen and Ozone (O3) could form, screening out ultra violet light.
D. Carbon Dioxide (CO2) absorbsinfrared light holding heat
E. Water Vapor gasifies and condensesholding and moderating weather by fluxing between liquid & gaseousstates in the presence of heat
F. Clouds (water & particulates)provide solar reflectivity (Albedo)
Nitrogen 78%
Oxygen 21%
Other 1.0%
“Other Gases”includesArgon, CO(n), SO(n), NO(n), CH(n), Water Vapor Particulates& Others Gaseouselements & compounds
SolarEnergy
Average Temp = 65 f
THE GAS MOSIAC
The atmosphere is comprised of6.0 quadrillion (6.0E+15) tons, or about 30 million tons / mi^2 of gasesthat surround the geosphere.A. The principle gases that make up
The atmosphere include Nitrogen c78% Oxygen c21% Argon c <1%
B. In addition there are other importantgases of lesser quantities including Carbon Dioxide (CO2) c 0.0003% Water Vapor (H2O) < 1%
C. The atmosphere acts as a fluid medium within which energy and chemicals can be transferredthat sustain life >> for example, Oxygenis taken from the atmosphere and combined with sugars for respiration,the key energy release process for living things—the by-product of Carbon Dioxide is used in Photosynthesis
“Other Gases”includes• Carbon Dioxide• Water Vapor• Nitrogen Compounds• Sulfur Compounds• Particulates• & Others Gases
Nitrogen 78%
Oxygen 21%
Other 1.0%
ATMOSPHERES COMPOSTION
The Atmosphere acts as a shieldaround the earth allowing only a narrow range of energy to reachthe surface.A. Ultra Violet light and other
high energy waves are reduced byreflection and dissipation
B. This stabilizes energy input fromthe sun so that the chemical processesof life can operate
C. It also screens the earth from space debris which would also disrupt the biosphere
D. In addition, the atmosphere acts tomoderate the fluctuating light wavesof the sun into a stable temperature.
E. The consequences of the dissipation, absorptionand reflection of the sun’s rays is that gasesin the Atmosphere undergo chemical changes,resulting in Atmospheric Chemical Cycles(including Ozone, Greenhouse, and Acid…
Reflected
HeatDissipated
Absorbed
ALBEDOSunlight
Atmosphere &Cloud Cover
ALBEDO PROCESS
Reflectedby clouds
Heat EnergyRadiated back
Captured by Greenhouse Effect
Absorbed
Sunlight Energy
Atmosphere &Cloud Cover
IN THE UPPER ATMOSPHERE
UV wavesCaptured by
Ozone
Oxygen prefers partnering as a diatomic (2) oxygen molecule.
As O2 is struck with UVc light from the Sun, the O2 breaks apart into free Oxygen.
The fee Oxygen combines with O2 and forms an unstable O3.
When Ozone (O3) is struck with UVb, it breaks the O3 into an O2 molecule and free Oxygen atom.
OZONE
SolarEnergy
Oxygen 21%
Nitrogen 78%
Other 1.0%
Average Temp = 65 f
A. Atmospheric Heat can be Expressed as an Equation which reads
Solar Energy + 78% N2 + 21% O2 + 1% Other Gases= Atmosphere Content + Temperature
B. The presence of “Other Gases” controls the absorption rate of heat from the sun
C. The light coming in is absorbed by the earthand radiated as heat.
D. The radiated heat is absorbed by “OtherGases (Greenhouse Gases)” and retained.
E. This process is called the Greenhouse Effect
“Other Gases”includesArgon, CO(n), SO(n), NO(n), CH(n), Water Vapor Particulates& Others Gaseouselements & compounds
GREENHOUSE EFFECT
Tropical
Sub-Tropical
Sub-Tropical
Mid-Latitude
Mid-Latitude
The energy from the sun over timeestablishes a pattern of weather referredto as climate. There are several factorsthat govern climate including
A. The more curved the earth based onlatitude, the more light is deflected,the less heat is available
B. The tilt of the earth on its axis movesthe intensity of light at any locationover the year causing seasons
C. Surface color and texture vary inhow much heat is retained
D. Ocean currents move warm & coldwater to varying locations
E. Topography influences wind andwater condensation patterns
Arctic
Arctic
Sub-Arctic
Sub-Arctic
23 degree tilt on axisfrom orbital perpendicular
CLIMATE
1. Light from the sunheats air causing itto expand
2. When light is less,the air cools & condenses resultingin large air massesof cooler hi pressure, dense air, and warm low pressure air.
3. When warmer low pressure air meetswith cool, hi pressureair, the differential pressures generatelocalized winds
5. The more dramatic the pressure/temp differentials,the greater the airinstability, and the more the weathervolatility.
4. Water from warmAir mass condensesIn the cool air massaround dust particles,forming clouds& causingprecipitation
HighPressure
HighPressure
Low Pressure
Low Pressure
wind
wind
WHEATHER
Oxygen prefers partnering as a diatomic (2) oxygen molecule.
As O2 is struck with UVc light from the Sun, the O2 breaks apart into free Oxygen.
The fee Oxygen combines with O2 and forms an unstable O3.
When Ozone (O3) is struck with UVb, it breaks the O3 into an O2 molecule and free Oxygen atom.
UVc
UVb
+ +
O2 + UVc = O + O
2 O + 2 O2 = 2 O3
2 O3 + UVb = 2 O2 + 2 O
OZONE PROCESS
UVc
+ +
O2 + UVc = O + O
UVb
Oxygen prefers partnering as a diatomic (2) oxygen molecule.
As O2 is struck with UVc light from the Sun, the O2 breaks apart into free Oxygen.
The fee Oxygen combines with a CFC and forms an unstable CFC Oxide.
When UVb strikes the CFC Oxide, it does nothing. The UVb simply passes on to the earth’s surface.
CFC INTERFERENCE
2 O + CFC = CFC O2 (CFC Oxide)
CFCO2 + UVb = null(CFC Oxide)
with Ozone Process
c 78% N2 c 21% O2 c 1% Greenhouse = c 65 degrees F
CO2 NO(n) CH3 H2O
Normal Blend of Atmosphere
c 75% N2 c 20% O2 c 5% Greenhouse = c 69 degrees F
Elevated Greenhouse Blend in Atmosphere
ReflectedHeat
radiated
ALBEDO
Sunlight
Blocked by Ozone
Radiated Heat is absorbed by
Greenhouse Gases
Sunlight reaching the atmosphere is either reflected or absorbed.Reflected light returns to space. Absorbed light is converted to heat. Heat radiating from the Earth is absorbed by the Greenhouse Gases in the Greenhouse effect. The greater the Greenhouse Gas concentration,The more heat that is absorbed and retained.
GREENHOUSE WARMING
Sources of Greenhouse Gas include:
Biotic RespirationCO2 given off while breathingNO(n) expiration from the soil CH3 from large animals
VolcanoesMt St Helen’s erupts with the force of a 20 kiloton hydrogen bomb, spewing clouds of “Other Gases” into the atmosphere
BurningForest & grass fires
Anthropogenic SourcesIndustrial PollutionEnergy Generation Automobile EmissionsAgricultural Fertilizers & Livestock
GREENHOUSE GAS SOURCES
POLLUT ION
OVER
CH INA
As the Atmosphere is heated it will nowbecome more chemically reactive
A. Water will combine with Nitrogen toform Nitrous Oxides
B. Water will combine with Sulfur to formSulfur Oxides
C. When combined with water these become acidic
D. Carbon Dioxide will combine with water form Carbolic Acid
Precipitation formed in the polluted atmosphere contains Water H2O Nitric Acid H2NO3 Sulfuric Acid H2SO4 Carbonic Acid H2CO3
Many of these are corrosiveacids
ACID RAIN
H2O + NO2 = H2NO3H2O + SO2 + O = H2SO4H2O + CO = H2CO3
H2NO3, H2SO4, H2CO3
1. Acid Rain will fall on the earth’s surface changing the acid ph of all ocean and fresh water below it.
2. Rocks exposed to Acid Rain will erode and dissolve faster.
3. Acid rain in soil increases soil acidity which impacts plant species.
4. A perpetual change in the Ph of water alters the DNA of affected species.
5. Altered DNA increases mutation rates, stressing reproductive balance.
Acids (OH) are highly corrosive, even when diluted.
Deciduous
Coniferouswith no grases
with grasses
IMPACT OFACID RAIN
DNAn + X(OH) = DNAm
Sources of Acidic Additives to the Atmosphere include:
Biotic RespirationCO2 given off while breathingNO(n) expiration from the soil
VolcanoesMt St Helen’s erupts with the force of a 20 kiloton hydrogen bomb, spewing clouds of “Other Gases” into the atmosphere
Anthropogenic Sources (burning fossil fuels)Industrial PollutionEnergy Generation Automobile EmissionsAgricultural Fertilizers
SOURCES OF ACID POLLUTION
Pollution over India Bangladesh
The atmosphere shapes the biosphere byA. Acting as a reservoir for gases that are needed
to continue life activitiesB. Maintain weather and climatic conditions within
which the biosphere can continueC. Screening out harmful rays and stabilizing the
energy fluctuations of the sun’s energy output
The atmosphere shapes the hydrosphere byA. Regulating ocean temperaturesB. Releasing and absorbing different gasesC. Acting as medium for water vapor in the
the hydrologic cycle
The atmosphere shapes the geosphere through A. Acting as a reservoir for different gases B. Facilitating the Rock & Soil Cycles through
temperature variationC. Contributing to erosion of the topography
through weathering
Biosphere
Lithosphere
Atmosphere
Hydrosphere
SUMMARY