Comprehensive Ecology Study Notes on Global Climate and Atmospheric Dynamics

Weather

Short term atmospheric conditions in a specific place, including temperature, precipitation, and wind.

Climate

The long-term average of weather patterns in a specific region, including temperature, humidity, and precipitation over extended periods.

Shortwave EMF

Electromagnetic radiation arriving from the Sun, which provides energy to Earth

Long wave EMF

Infrared electromagnetic radiation emitted by Earth after it absorbs solar energy

Greenhouse effect

The process by which certain gases in Earth's atmosphere trap heat, preventing it from escaping back into space. This effect keeps the planet warm enough to support life.

H₂O, CO₂, and CH₄

Water vapor, carbon dioxide, and methane; gases involved in the greenhouse effect

Atmospheric pressure

The pressure exerted by the weight of air above a location

Adiabatic cooling

cooling that occurs when air expands as surrounding atmospheric pressure decreases

Altitude

The height of an object or point in relation to sea level or ground level.

Selective EMF filter

the atmosphere’s ability to absorb some kinds of electromagnetic radiation while allowing others through.

Ozone

A molecule composed of three oxygen atoms, ozone forms a layer in the Earth's stratosphere that absorbs most of the sun's harmful ultraviolet radiation.

UV

Ultraviolet radiation, part of the Sun’s electromagnetic radiation

Latitude

Distance north or south of the equator, measured in degrees that influence climate and weather patterns.

Oblique angle

A slanted angle at which sunlught strikes Earths surface, spreading energy over a larger area

Seasons

Changes in climate patterns throughout the year caused by the tilt of Earth's axis and its orbit around the Sun, leading to variations in daylight and temperature.

Tropic of Cancer

The northernmost latitude at which the sun can be directly overhead, occurring at approximately 23.5° north of the equator. It marks the start of summer in the Northern Hemisphere.

Tropic of Capricorn

The southernmost latitude at which the sun can be directly overhead, occurring at approximately 23.5° south of the equator. It marks the start of summer in the Southern Hemisphere.

Air masses

Large bodies of air with uniform temperature and humidity characteristics that form over specific regions, influencing weather patterns as they move.

Coriolis effect

The deflection of moving objects, including air masses, due to the Earth's rotation, causing them to turn to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

Six major air cells

are large-scale circulation patterns in the atmosphere that help distribute heat and moisture around the globe, including the Hadley, Ferrel, and polar cells.

Low pressure

system where the atmospheric pressure is lower than that of surrounding areas, often leading to cloud formation and precipitation.

High pressure

system where the atmospheric pressure is higher than that of surrounding areas, typically associated with clear skies and drier calm weather.

Subtropical high

is a high-pressure system located around 30 degrees latitude in both hemispheres. It is characterized by descending air that creates warm, dry conditions, often leading to desert regions.

Subpolar low

is a low-pressure system found in the subpolar regions near 60 degrees, typically associated with rising air, frequent precipitation, and stormy weather.

Trade winds

are the persistent easterly winds found in the tropics, blowing from the subtropical high-pressure areas towards the equatorial low-pressure zone. They play a crucial role in weather patterns and ocean currents.

Ocean currents

are large-scale movements of seawater driven by factors such as wind, temperature, salinity differences, and the Earth's rotation that redistribute heat

Gyres

are large circular ocean currents primarily driven by wind patterns and the Coriolis effect and influenced by Earth’s rotation

Moisture content of air

refers to the amount of water vapor present in the atmosphere, which is a key factor in weather and climate, affecting humidity, precipitation, and temperature.

Relative humidity (RH)

is the ratio of the current amount of water vapor in the air to the maximum amount of water vapor the air can hold at a given temperature, expressed as a percentage.

Dew point

The tempeture at which air becomes saturated and relative humidity reaches 100% , resulting in the condensation of water vapor into liquid water.

Sling psychometer

psychrometer is an instrument used to measure the moisture content of the air by comparing the temperatures of a dry bulb and a wet bulb.

wet wick

A fabric or material that retains moisture, often used in conjunction with a dry bulb in a sling psychrometer to measure humidity.

Low pressure systems

Atmospheric systems associated with rising air, cooling, and possible precipitation

Precipitation

The process by which water, in the form of rain, snow, sleet, or hail, falls from the atmosphere to the Earth's surface as a result of condensation and atmospheric cooling.

Intertropical convergence zone

A tropical region where trade winds converge, and rising moist air produces frequent rainfall.

Monsoon

A seasonal prevailing wind that brings significant rainfall to a region, characterized by a shift in wind direction and moisture availability.

High pressure systems

Atmospheric systems associated with defending air, warming, and generally, dry conditions

Deserts

Areas characterized by low precipitation, high evaporation rates, and extreme temperature variations, often resulting in sparse vegetation.

Leeward

Referring to the side of a mountain or hill that is sheltered from the wind, typically characterized by drier conditions and less vegetation due to the rain shadow effect.

Continental Climate

A climate type characterized by significant temperature variations between seasons, typically found in inland areas with warm summers and cold winters.

Climatic zones

Geographic regions with similar long-term temperature and precipitation patterns.

Windward

The side of a mountain or hill that faces the wind, typically receiving more precipitation and characterized by lush vegetation.

Topography

The arrangement of natural and artificial physical features of an area, which affects climate, weather patterns, and ecosystems. Includes mountains, valleys, and elevation

Precipitation patterns

The geographic distribution and variability of rainfall and other forms of precipitation over time in a specific area, influencing vegetation and water resources.

Rain shadow

A dry area on the leeward side of a mountain that receives less precipitation due to the blocking effect of the mountain range, leading to distinct ecological zones.

Lake effect snow

A weather phenomenon occurring when cold air moves over warmer lake waters, causing increased precipitation in the form of snow downwind of the lake. This results in heavy snowfall in coastal areas, particularly in winter.

Temperate forest

A type of forest characterized by moderate climatic conditions and distinct seasonal changes

Rain forest

A dense forest found in tropical regions with high rainfall, characterized by rich biodiversity and a layered structure.

Mediterranean

climate is characterized by hot, dry summers and mild, wet winters, typically found in regions such as Southern California, parts of Australia, and the Mediterranean Basin.

Regional irregularities in climate

Variations in climate patterns affecting paticular regions over time

Droughts

periods of prolonged dry weather with insufficient precipitation, often leading to water shortages and adverse effects on agriculture and ecosystems.

Little ice ages

Extended historical periods of comparatively cooler regional temperatures.

El Niño

a climate pattern characterized by the periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, influencing global weather patterns and climate events.

La Niña

a climate pattern characterized by the periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often resulting in opposite effects compared to El Niño, including increased rainfall in some areas and droughts in others.

Southeast Tradewind

A prevailing wind in the Southern Hempishere tropics that help drive Pacific surface currents

Surface currents

Movement of water near the ocean’s surface, influenced by prevailing winds.

Upwelling

is the process where deep, cold water rises to the surface, bringing nutrients that support marine life and enhance productivity.

Cold nutrient rich waters

Deep ocean water containing nutrients that support marine organisms when brought to the surface.

High ocean productivity

High biological production in ocean ecosystems, often supported by nutrient-rich surface waters.

Microclimates

are small, localized areas within a larger ecosystem that experience distinct climate conditions, often influenced by factors like vegetation, topography, and human activity.

Heat islands

Urban areas that experience higher temperatures than surrounding rural areas due to human activities, buildings, and reduced vegetation.