Possible Causes of Climate Change  Plate Tectonics and Mountain Building Theory of plate tectonics Ridge and subduction Mountain interaction with airflow.

Slides:



Advertisements
Similar presentations
What drives the ice age cycles?
Advertisements

Feedback effects When the Earth warms up, a large number of changes take place in the atmosphere, the oceans, and the land surface. Some of these changes.
Reading: Chapter 4 Lecture 24. Forces Stabilizing Climate, Carbonate-Silicate Cycle.
1.Greenhouse Effect 2.The CO 2 Cycle, Long-Term Climate Change 3.Ice Ages and Short-Term Climate Change 4.Human-Induced Climate Change.
Climate Forcing, Sensitivity and Feedback Processes.
Sea-Tac. Glacial evidence In what way is a glacier like a water reservoir (other than they are both water)?
Myr ago Puzzle: Ice Ages! Occur with a period of ~ 250 million yr Cycles of glaciation within the ice age occur with a period of 40,000 yr Most recent.
MET 112 Global Climate Change -
Potential Causes of Climate Change ENVS 110. orbital parameters.
Natural and Human Influences on Climate Change
Outline Review of Ocean Stratification and Circulation Recent historical Climate Change External Climate Forcings Natural Climate Variability Paleoclimatology.
 External Causes Change in incoming radiation Change in composition of the atmosphere Change in Earth’s surface  Feedback Mechanisms Water vapor-greenhouse.
Evaluation II – The Atmosphere Feedback describes the situation when output from (or information about the result of) an event or phenomenon in the past.
Global Warming 101 Huge Amount in the Media on this Issue.
A Changing Climate: Past, Present and Future AT 351 Lecture 13 Dec 7, 2009.
Part 6. Current, Past, and Future Climates Chapter 16 Climate Changes: Past and Future.
Class #11: Wednesday July 21 Earth’s changing climate Chapter 16 1Class #11 Wednesday, July 21.
Climate and Climate Change ATS 351 Lecture 13. Outline What is Climate? What is Climate? What can change climate? What can change climate? Observations.
8.8 Energy Transfer within the Climate System. Air and Ocean Circulation  Sun hits earth at different intensities and latitudes  Water and land absorb.
Changes in solar radiation are primary cause for climates to change ~10% change in solar radiation output can dramatically alter Earth’s climate Changes.
Natural Causes of Climate Change
3.3 Theory of Climate Change
Solar Radiation: The driving factor Radiation (energy transmitted as waves, rays and particles) released, absorbed & reflected by all things travels as.
CE 401 Climate Change Science and Engineering orbital variations and climate, aerosols, carbon cycle 25 January 2011.
What is an Ice Age ? Ice ages are times when large areas of the earths surface are covered with ice sheets The term is used to describe time periods when.
Quaternary Environments Climate and Climatic Variation.
Chapter 14: Climate Change The earth’s changing climate The earth’s changing climate Possible causes of climatic change Possible causes of climatic change.
Chapter 14: Climate change The earth’s changing climate The earth’s changing climate Possible causes of climatic change Possible causes of climatic change.
CE 401 Climate Change Science and Engineering solar input, mean energy budget, orbital variations, radiative forcing January 2011.
1 MET 112 Global Climate Change MET 112 Global Climate Change - Lecture 4 Natural Climate Forcing Dr. Eugene Cordero San Jose State University Outline.
Sustainability and Globalization Global Warming. A global issue with regards to sustainability A world-wide warming of the Earth’s lower atmosphere.
Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change.
NATS 101 Lecture 33 Natural Climate Variability. What is Climate Change? Climate change - A significant shift in the mean state and event frequency of.
DAISY WORLD, LIGHT/DARK DASIES EFFECT OF DASIES ON GLOBAL CLIMATE.
Pleistocene + Modern Climate. Current grade scale.
Module 4 Changes in Climate. Global Warming? Climate change –The pattern(s) of variation in climate (temperature, precipitation) over various periods.
Climate Change. Determining past climate The methods used to study the past climate typically involve physical, chemical, biological processes sensitive.
Honors 1360 Planet Earth Last time: Measuring Earth’s Hydrosphere Obs : Gravity changes (allow us to see “hidden” groundwater; can also separate steric.
Milankovitch Cycles and the Big Chill CGF3MI Sunday, June 5, 2016.
Climate Change Monday, November 5th. Anthropogenic Climate Change Thomas Jefferson, 1781 Notes on the State of Virginia –Springs are warmer –Less winter.
Climate Change November 4, Global Climate Change Global Warming – describes a rapid increase in the temperature of Earth’s surface, water, and atmosphere,
Class #39: Friday, April 171 Mechanisms of Climate Change Natural and Anthropogenic.
The Carbon Cycle and Climate Change
Factor Influencing Climate Change Tectonics Ocean Circulation Patterns and the Thermohaline Cycle Orbital Forcing Mechanisms Atmospheric Variations.
Discuss the relationship between climate and biomes.
The Atmosphere.  Nitrogen (78%)  Oxygen (21%)  Water Vapor (less than 4%)  Carbon Dioxide (less than 1%)  Methane (less than 1%)  Nitrous Oxide.
Chapter 13: The Earth’s Changing Climate Climate change Climate change Possible causes of climatic change Possible causes of climatic change Global warming.
An Orbital Theory For Glacial Periods
Weather, Climate and Society ATMO 336 Seasons Orbital Variations and Ice Ages.
Climate Change. Causes Several factors affect global climate: 1.Changes in solar output 2.Changes in Earth's orbit 3.Changes in the distribution of continents.
LONG AND SHORT TERM CHANGES IN CLIMATE. LONG TERM CHANGES Continental Drift When continents move, ocean currents and wind patterns change which affects.
1 MET 112 Global Climate Change MET 112 Global Climate Change - Lecture 6 Natural Climate Forcing Dr. Eugene Cordero San Jose State University Outline.
Orbital Hypothesis of Climate Change & Pleistocene Ice Ages.
Solar Radiation: The driving factor Radiative Energy (energy transmitted as waves, rays and particles) released, absorbed & reflected by all things travels.
The Earth's Changing Climate Chapter 16. Climate of the earth has always changed over time. Currently evidence shows that the earth is warming, this can.
The Earth’s Orbit and Climate
Earth’s Climate System
Long-term climate change & Short-term climate variability
Solar Radiation: The driving factor
Chapter 14: Climate Change
Climate: Earth’s Dynamic Equilibrium
Natural Mechanisms of Climate Change
The Earth’s Orbit and Climate
Past Climates - the mechanisms
Do Now Please take out your Milankovitch Cycles Packet.
Reconstructed Temperature data from the Vostok Ice Core in Antarctica
The Earth’s Orbit and Climate
Chapter 13: The Earth’s Changing Climate
The major cycles of the Earth's orbit
Oscillations – Resonance Glacial Cycle
Presentation transcript:

Possible Causes of Climate Change  Plate Tectonics and Mountain Building Theory of plate tectonics Ridge and subduction Mountain interaction with airflow and ocean currents  Variation on the Earth’s Orbit Milankovitch Theory ○ Eccentricity ○ Precession ○ Obliquity

Possible Causes of Climate Change  Plate Tectonics and Mountain Building Theory of plate tectonics Ridge and subduction Mountain interaction with airflow and ocean currents  Variation on the Earth’s Orbit Milankovitch Theory ○ Eccentricity ○ Precession ○ Obliquity

Eccentricity

Evolution of Earth’s eccentricity. Data taken from Berger and Loutre (1991) Comparison of Antarctic temperature reconstructed from Vostok ice core deuterium measurements, with the Earth’s eccentricity cycle. Vostok temperature data was taken from Peteet et al. (1999)

Precession

Evolution of precession angle relative to the Northern Hemisphere Summer Solstice, and the associated July insolation at 65N. Data taken from Berger and Loutre (1991)

Obliquity

Evolution of the Earth’s obliquity. Data taken from Berger and Loutre (1991) Evolution of Mars’ obliquity. Data taken from Laskar et al. (2004)

Possible Causes of Climate Change  External Causes Change in incoming radiation Change in composition of the atmosphere Change in Earth’s surface  Feedback Mechanisms Infrared radiation (-) Snow-albedo feedback (+) Water vapor-greenhouse gas feedback (+?) Cloud feedback (+ or - ?)

What is feedback?  Feedback describes the situation when output from an event or phenomenon in the past will influence an occurrence or occurrences of the same event / phenomenon in the present or future.  Feedback is used in many applications, and here are a some examples: 1. Biology 2. Engineering 3. Computing systems 4. Social Sciences 5. Climate Science

Stefan-Boltzmann (Infrared Radiation) Feedback: Negative

Snow Albedo Feedback Mechanism: Positive

Water Vapor Feedback Mechanism: Thought to be positive by climate models and most climatologists

Cloud Feedback Mechanism: Sign of feedback basically unknown

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.