Monday, January 13, 2025

Geog 12 little enviro/climate change project

 Goal:  to understand, identify and assess what has happened around certain environmental/climate change issues since the release of an Inconvenient Truth.  How have these issues/events influenced each other.

How to achieve goal:  choose a topic of interest (ideas below or from documentary), create a research question and do research to find answers.  Create a short presentation that you will present to us on Thursday next week.  Presentation should not exceed 10 minutes (think 6/7 slides).  Include a bibliography in APA style.  (You will be submitting your notes).

Sample topics:

— human modification of the lithosphere for resource extraction, settlement, agriculture

— human modification of the atmosphere by changing the rate of exchange of gases (e.g., release of CO2 through burning of fossil fuels)

— human modification of the biosphere by hunting, domesticating, bio-altering, and geographically relocating other species

— storm protection of coastal cities by wetlands

— settlement patterns associated with access to natural resources (e.g., risk of farming on a flood plain in rich soils developed by river flooding)

— global climate change and ocean acidification

— deforestation

— coral reef bleaching

— depletion of ozone layer

— global atmospheric circulation patterns

— acid precipitation

— wild species at risk

— drainage patterns, agriculture, and coastal dead zones

- melting of polar regions and permafrost

Some key questions to consider:

— How much responsibility do we have for the environment?

— Should people sacrifice some of their standard of living to halt global climate change?

— Can the oceans survive human impacts?

— What are the reasons for and against limiting natural resource extraction? Do you think we should limit extraction?

Geog 12: Answers to Friday 5, jan 10

 1.  Where is the ICTZ/intercontinental convergence zone?

-an area around the equator between the tropics that has a permanent low pressure area and includes the doldrums and the trade winds (area under hadley cells)

2.  What are the 4 main cloud types?

Stratus - Stratus means stretched out or layered.

Cirrus - Cirrus means curl, lock of hair

Cumulus - Cumulus means heap.

Nimbus - Nimbus means rain cloud, cloud burst, shower and cloud

3. Define humidity:

-refers to the amount of moisture in the air (ie. how much water vapour in a parcel of air at any given time)

4.  Name the 5 major types of storms

-thunder

-hurricanes 

-tornados

-blizzard

-frontal depression

5.  Define/explain one of these and what conditions are needed.

Storm TypeDefinitionConditions Needed for Formation
Tropical StormA storm system characterized by a low-pressure center, thunderstorms, and strong winds, typically forming over warm oceans.- Warm ocean water (at least 26°C/79°F) provides energy.
- High humidity in the mid to upper atmosphere.
- Low vertical wind shear (weak changes in wind speed and direction with height).
- A pre-existing weather disturbance, such as a tropical wave.
ThunderstormA localized storm with lightning, thunder, heavy rain, and sometimes hail, resulting from rapidly rising warm air.- Warm, moist air near the surface.
- Unstable atmospheric conditions.
- A lifting mechanism (e.g., front, terrain, or convection) to push air upward.
- Sufficient moisture to sustain cloud and precipitation development.
TornadoA rapidly rotating column of air extending from a thunderstorm to the ground, with extreme winds and localized damage.- A supercell thunderstorm with strong updrafts.
- Significant wind shear (changing wind speed/direction with height).
- A triggering mechanism, such as a cold front.
- Presence of moist, warm air colliding with cooler, drier air.
Winter StormA storm with heavy snow, sleet, or freezing rain, often associated with cold temperatures and strong winds.- Cold air near the surface.
- Abundant moisture (often from a nearby body of water or atmospheric rivers).
- A lifting mechanism, such as a low-pressure system or front.
HurricaneAn intense tropical storm with sustained winds of 74 mph or more, forming over warm ocean waters and causing widespread damage.- Sea surface temperatures of at least 26°C (79°F).
- High levels of moisture in the troposphere.
- Low vertical wind shear.
- A disturbance to initiate the system, like a tropical wave.