Natural and Human impacts on Weather and Climate

Slides:



Advertisements
Similar presentations
Heat Budget and Climate Change. Heat Budget is the result of a balance between energy received (insolation and Earth’s Interior) and energy lost (terrestrial.
Advertisements

Topic 6 in Review Book.  global wind patterns  ocean currents  the water cycle.
Natural Processes that Change Climate
Mrs. Wharton’s Science Class. What is Air Quality? Air Quality- Affects the quality of life of all organisms on earth. Natural and Human activities greatly.
Overpopulation ~7 billion people Many natural resources are nonrenewable More people means: –1) More forests removed –2) More resources consumed –3)
Chp 16 CLIMATE CHANGE.  Climate change refers to the changes average weather patterns.  More or less rain then normal in some areas, more or less wind,
The Atmosphere B7: Global Changes in the Atmosphere.
Human Impact on the Environment:
Pollution.
Environmental Effects of Overpopulation
Climate Lesson What factors contribute to a region’s climate?
S6E2.c. relate the tilt of earth to the distribution of sunlight through the year and its effect on climate.
AIR POLLUTION AND CLIMATE CHANGE JEOPARDY JB Final Review Jeopardy.
Climates.
THE GREENHOUSE EFFECT Greenhouse Gases:  chemical compounds in the atmosphere that trap heat  they retain a proportion of the sun’s heat through the.
Global Changes in the Atmosphere
Changes in Climate Earth Science Mr. Barry.
The Greenhouse Effect G.H.E. is naturally good (it warms Earth) Problem: Excess heat trapped near the earth’s surface Fear: Climate patterns change,
Climate & Atmospheric Changes. Ozone Depletion Ozone- molecule consisting of 3 oxygen atoms  Benefit to humans because it absorbs harmful UV radiation.
Climate: The average, year-after-year conditions of temperature, precipitation, winds and clouds in an area.
Chapter: Climate Section 3: Climatic Changes.
HUMAN IMPACT ON THE ENVIRONMENT Global Warming and Acid Rain.
Pollution. What is air pollution? …air that contains harmful substances at unhealthy levels.
Climate Change and Human Impact. Many natural processes cause climate change Volcanic eruptions – volcanic ash and dust in the atmosphere reflect solar.
Assumption College Mathayom 1, Foundation Science Miss Anna.
Climate Change. Natural Processes That Change Climates  Volcanic Eruptions  The presence of volcanic aerosols (ash, dust, and sulfur-based aerosols),CO.
Natural Processes that Change Climate Volcanic Eruption Ocean Circulation Solar Activity Earth Motions CO 2 fluctuations Ocean acidification Objective:2.6.2.
Climates can change suddenly or slowly.  ICE AGE: Period in which huge sheets of ice spread out beyond the polar regions.  El NINO: A disturbance of.
Climate Factors of Climate El Nino Topography Greenhouse Effect
Chapter Thirteen: Atmosphere and Climate Change
Climate.
Define Climate The long term weather patterns of an area.
Chapter 27: Human Impact on Earth’s Resources
Climate Change.
Warm-Up Write questions and answers in your notebook
Answer all questions Why do we have climate zones?
What factors contribute to a region’s climate?
Climate Change.
Impacts on the Atmosphere
Chapter 17 Climate.
Climate Change.
Seasons and Sunlight Seasons are caused by the tilt of the Earth’s axis with respect to the sun. The tilt causes 24 hours of darkness each day at the.
Air Pollution,Climate Change,and Global Warming
Global Changes in the Atmosphere
Natural Climate Change
Warm-up What is the difference between weather and climate?
Global Changes in the Atmosphere
Human Impact on Ecosystems
Atmosphere and Climate Change
Conservation Biology.
All About the Air….
What is wrong with this picture?
Unit #11: Ecology (Part 5) GEOCHEMICAL CYCLES and CHANGES IN ECOSYSTEMS Ms. Day AP Biology.
HUMAN IMPACTS on ECOSYSTEMS
Climate changes Earth is constantly changing, including the climate.
THE GREENHOUSE EFFECT Greenhouse Gases:
Climate Vocabulary Terms you need to know!.
Climate Changes due to Natural Processes
Ch. 13 Atmosphere and Climate Change
Chapter: Climate Section 3: Climatic Changes.
Overpopulation.
ECOSYSTEM Collection of abiotic (nonlivng) and biotic (living) factors in an area Together they influence growth, survival, and productivity of an organism.
Climate change.
Section 4 Earth’s Changing Climate
Climate.
Unit 6 Climate and Global Climate Change
18.4 Global changes in the atmosphere Page 641
Climate Book Review Iclicker Style.
What is the difference between El Nino and La Nina?
Human Impact & the Environment
Presentation transcript:

Natural and Human impacts on Weather and Climate

Climate Average weather conditions over a long period of time. (temperature and precipitation)

Natural Impacts El Nino/La Nina El Nino: unusually warm current off the coast of S. America: (caused by weak winds) makes South America warmer and rainier than usual. Causes storms in U.S. Can weaken hurricanes. La Nina: the more common colder current off the coast of S. America. S. America is cooler and drier.

Volcanic Eruptions Ash and dust may block sunlight making global temperature cooler. Excess CO2 may increase the Greenhouse effect and make global temperature warmer.

Sun Spots High sunspot activity: warmer climate Low sunspot activity: cooler climate (the Little Ice Age from 1645-1716)

Shifts in Earth’s orbit A more circular orbitcooler climate A more elliptical orbitwarmer climate when the Earth is closer to the Sun

The Earth’s Precession Every 14000 years the northern hemisphere summers occur when the Earth is also closer to the Sun. This intensifies summer heat.

Human impacts on Global climate

Urban heat islands Excess pavement and buildings release heat back to the atmosphere rather than plants absorbing the heat.

Burning hydrocarbons Mining gasoline and coal, etc. and then burning it releases excess CO2 that was stored underground. This leads to intensified Greenhouse effect and global warming.

Burning wood Destroys trees which when alive removed CO2. Adds CO2, other gases and particulate pollution Reduces animal habitats

Greenhouse Effect The greenhouse effect itself is good! It allows us to have moderate temperatures for survival. EXCESS CO2 traps heat in the atmosphere causing global temperature to rise (global warming)

Deforestation: Slash and burn agriculture Soils in tropical rain forests tend to be poor in nutrients Farmers burn the trees off, and use the land for a brief time before the nutrients are depleted They then move to another plot.

Deforestation: over farming Dust will be blown into the atmosphere increasing particulate pollution

(dust bowl, 1930s)

Deforestation: removal of wild habitat to support human dwellings, etc.

Industrial byproducts Sulfur dioxide and nitrogen oxides are added to the atmosphere along with excess CO2 and particulates.

Acid precipitation Various chemicals released into the atmosphere cause acids to form. examples: Sulfur dioxides and nitrogen oxides Precipitation has a pH of less than 5. Effects of acid rain at Mount Mitchell, NC

Chlorofluorocarbons/aerosols CFCs destroy ozone in the upper atmosphere. This means that the ozone layer is less effective at blocking UV light This could mean more cases of skin cancer.

The Carbon Cycle

What can we do? Create a poster with words and pictures showing how we can reduce AIR pollution and global warming. List ideas in each category: World My family and I