Introduction to Climate in Ethiopia and the Horn
40 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is weather?

Weather is the instantaneous or current state of the atmosphere composing temperature, atmospheric pressure, humidity, wind speed and direction, cloudiness and precipitation.

What is climate?

Climate refers to the state of the atmosphere over long time periods, decades and more. It is the composite of daily weather conditions recorded for long periods of time. Climate also takes into account the extremes or variations that may occur beyond the average conditions.

The climate of Ethiopia is mainly controlled by which zone?

  • Antarctic Convergence Zone
  • Temperate Convergence Zone
  • Arctic Convergence Zone
  • Intertropical Convergence Zone (ITCZ) (correct)
  • Weather parameters are measured using:

    <p>Various instruments (B)</p> Signup and view all the answers

    Does weather that impacts the surface of the Earth and those that live on the surface takes place in the stratosphere?

    <p>False (B)</p> Signup and view all the answers

    What elements do you consider to define weather conditions?

    <p>All of the above (D)</p> Signup and view all the answers

    What is the source of summer rainfall in Ethiopia?

    <p>Latitude/angle of the sun.</p> Signup and view all the answers

    What factors determine the climate of a particular location on Earth?

    <p>All of the above (D)</p> Signup and view all the answers

    The climate is determined only by the amount of solar radiation.

    <p>False (B)</p> Signup and view all the answers

    Match the following elements with their corresponding controls:

    <p>Temperature = Latitude/angle of the Sun Precipitation and humidity = Land and water distribution Winds and air pressure = Winds and air pressure</p> Signup and view all the answers

    What is latitude?

    <p>Latitude is the distance of a location from the equator.</p> Signup and view all the answers

    What are the effects of Ethiopia's latitudinal location?

    <p>All of the above (D)</p> Signup and view all the answers

    What is Equinox?

    <p>Anequinox is the instant of time when the sun strikes the plane of the Earth's equator. During this passage the length of day and night are equal.</p> Signup and view all the answers

    What happens during the summer solstice?

    <p>On June 21st, the northern hemisphere has maximum tilt towards the sun experiencing longest daylight of the year. It is the astronomical first day of summer in the Northern Hemisphere.</p> Signup and view all the answers

    What happens during the vernal equinox?

    <p>Is the day when the point of verticality of sun's rays crosses the equator northwards. This equinox experiences in Northern Hemisphere when the sun is exactly above the equator.</p> Signup and view all the answers

    What happens during the autumn equinox?

    <p>Appears to happen when the sun crosses equator giving approximately equal length between day and night. It appears to happen when the visible sun moves south across the celestial equator on 23rd of September.</p> Signup and view all the answers

    Lapse rate

    <p>Changes per unit of altitudinal change.</p> Signup and view all the answers

    Types of lapse rate are identified?

    <p>Three (D)</p> Signup and view all the answers

    What is dry adiabatic laps rate?

    <p>The temperature changes occurring in the rising or subsiding air mass are not the result of additions of heat to, or withdrawals of heat from outside sources, but rather are the consequence of internal processes of expansion and contraction.</p> Signup and view all the answers

    What is Environmental lapse rate or Atmospheric lapse late?

    <p>This refers to the actual, observed change of temperature with altitude.</p> Signup and view all the answers

    What elements are important in determining temperature of Ethiopia and the Horn?

    <p>Altitude. Latitude, humidity and winds, with varying magnitude have also significant impacts on temperature conditions in Ethiopia.</p> Signup and view all the answers

    What is the major controls determining the distributions of Ethiopian temperature?

    <p>Latitude and cloud cover.</p> Signup and view all the answers

    What results in maximum difference in the daily range?

    <p>Temperature is high during the daytime in some places, and is considerably reduced at night.</p> Signup and view all the answers

    What causes the rainfall system in Ethiopia?

    <p>Position of Inter Tropical Convergence Zone (ITC), pressure cells, and Trade Winds.</p> Signup and view all the answers

    What causes a variation in the Wind flow patterns over Ethiopia and the Horn?

    <p>The inter-annual oscillation of the surface position of the ITCZ.</p> Signup and view all the answers

    What winds bring summer rainfall for Ethiopian highlands?

    <p>Equatorial Westerlies (Guinea monsoon) and Easterlies.</p> Signup and view all the answers

    What four rainfall regions can be identified in Ethiopia and the Horn?

    <p>Summer rainfall region; All year-round rainfall region; Autumn and Spring rainfall regions; Winter rainfall region.</p> Signup and view all the answers

    How many major climatic zones is Ethiopia divided to?

    <p>5 (C)</p> Signup and view all the answers

    Agro-ecological Zones of Ethiopia

    <p>Bereha, Kolla, Woina Dega, Dega and Wurch</p> Signup and view all the answers

    What are the mountains in the Wurch-zone?

    <p>Ras Dashen, Guna, Megezez in North Shoa, Batu, Choke, Abune Yoseph etc.</p> Signup and view all the answers

    What is the altitude of Weyna Dega Zone?

    <p>1,500 - 2300 (A)</p> Signup and view all the answers

    The Bereha agro-climatic zone is largely confined to ______ areas with altitude of lower than 500 meters.

    <p>lowland</p> Signup and view all the answers

    Ethiopia's rank in terms of its risk of drought

    <p>5th out of 184 countries.</p> Signup and view all the answers

    What is climate change?

    <p>Climate change refers to a change in the state of the climate that can be identified (e.g. using statistical tests) by changes in the mean and/or the variability of its properties and that persists for an extended period, typically decades or longer.</p> Signup and view all the answers

    The causes of climate change are generally categorized as...?

    <p>Both (C)</p> Signup and view all the answers

    Climate change has no natural causes.

    <p>False (B)</p> Signup and view all the answers

    What are some of the major natural causes?

    <p>All the above (C)</p> Signup and view all the answers

    What are gases that contribute to the greenhouse effect?

    <p>All the above (B)</p> Signup and view all the answers

    Climate Response Mechanisms

    <p>Mitigation, adaptation and resilience</p> Signup and view all the answers

    Mitigation measures

    <p>Practice Energy efficiency; Increase the use of renewable energy such as solar; Efficient means of transport implementation: electric public transport, bicycle, shared cars etc.</p> Signup and view all the answers

    Flashcards

    Weather

    The current state of the atmosphere, including temperature, humidity, and precipitation.

    Climate

    The long-term average of weather conditions over decades or more.

    ITCZ

    Intertropical Convergence Zone; a low-pressure area where trade winds meet, influencing weather patterns.

    Latitude

    The measure of how far a location is from the equator, impacting temperature and climate.

    Signup and view all the flashcards

    Altitude

    The height of a location above sea level, affecting temperature and climate.

    Signup and view all the flashcards

    Lapse Rate

    The rate at which temperature decreases with an increase in altitude.

    Signup and view all the flashcards

    Dry Adiabatic Lapse Rate

    The rate of temperature change in a rising dry air parcel, typically about 10°C per 1000 meters.

    Signup and view all the flashcards

    Wet Adiabatic Lapse Rate

    The rate of temperature change in a rising saturated air parcel, about 5°C per 1000 meters.

    Signup and view all the flashcards

    Environmental Lapse Rate

    The actual observed change of temperature with altitude.

    Signup and view all the flashcards

    Equinox

    The time when day and night are of approximately equal duration, occurring twice a year.

    Signup and view all the flashcards

    Solstice

    The time during the year when the sun reaches its highest or lowest point in the sky, resulting in the longest or shortest day.

    Signup and view all the flashcards

    Rainfall Distribution

    The spatial and temporal patterns of rainfall in a region, influenced by various climatic factors.

    Signup and view all the flashcards

    Climate Change

    A change in the average long-term weather patterns of a region, due to natural or anthropogenic causes.

    Signup and view all the flashcards

    Anthropogenic Causes

    Human-induced factors contributing to climate change, like greenhouse gas emissions.

    Signup and view all the flashcards

    Natural Causes of Climate Change

    Factors such as volcanic eruptions or solar output affecting climate naturally.

    Signup and view all the flashcards

    Drought

    An extended period of deficient rainfall relative to the statistical multi-year average for a region.

    Signup and view all the flashcards

    Greenhouse Gases

    Gases that trap heat in the atmosphere, contributing to the greenhouse effect.

    Signup and view all the flashcards

    Agro-ecological Zones

    Different regions in a country defined by climate, altitude, and natural resources, suitable for specific types of agriculture.

    Signup and view all the flashcards

    Wurch Zone

    High altitude zone in Ethiopia, above 3,200 meters, with cool temperatures and high rainfall.

    Signup and view all the flashcards

    Kola Zone

    Lowland region in Ethiopia between 500 and 1,500 meters, characterized by hot temperatures.

    Signup and view all the flashcards

    Bereha Zone

    Dry lowland region with arid climate, less than 500 meters altitude and very low rainfall.

    Signup and view all the flashcards

    Summer Monsoon

    Season when most parts of Ethiopia receive heavy rains, generally from June to September.

    Signup and view all the flashcards

    Flooding

    Overflow of water onto normally dry land, often due to heavy rainfall events.

    Signup and view all the flashcards

    Resilience Strategy

    Approaches that help communities adapt and recover from climate-related shocks.

    Signup and view all the flashcards

    Mitigation Strategy

    Efforts to reduce or prevent emission of greenhouse gases to limit climate change impacts.

    Signup and view all the flashcards

    Adaptation Strategy

    Adjusting practices and systems to minimize the impacts of climate change.

    Signup and view all the flashcards

    Seasonality in Temperature

    Variations in temperature patterns throughout different seasons in a year.

    Signup and view all the flashcards

    Temperature Extremes

    Significantly high or low temperatures compared to average conditions.

    Signup and view all the flashcards

    Spatiotemporal Patterns

    Refers to the distribution of climatic elements (like temperature and rainfall) across time and space.

    Signup and view all the flashcards

    Study Notes

    Introduction to Climate of Ethiopia and the Horn

    • Ethiopia is a large country with diverse climates due to its proximity to the equator and the Indian Ocean and varied topography
    • Climate is primarily controlled by the Intertropical Convergence Zone (ITCZ) and its associated atmospheric circulations
    • Weather is the instantaneous state of the atmosphere (temperature, pressure, humidity, wind, clouds, precipitation)
    • Climate is the composite of daily weather conditions over long periods (decades or more), including extremes

    Weather and Climate Elements and Controls

    • Weather elements include temperature, precipitation, humidity, winds, and air pressure
    • Weather controls include latitude, angle of the sun, land and water distribution, winds, altitude, mountain barriers, and ocean currents
    • Climate in a region is ultimately determined by radiation, its distribution, and temporal fluctuations

    Controls of Weather and Climate

    • Latitude: Determines the amount of solar radiation received, affecting temperature. Ethiopia's location results in high average temperatures with little variation in day/night length.
    • Inclination of the Earth's Axis: The Earth's tilt causes seasonal variations in the distribution of solar radiation, resulting in different seasons.
    • Equinoxes and Solstices: Equinoxes mark when the sun is directly over the equator (equal day/night length), while solstices mark the maximum tilt of the Earth toward or away from the sun (longest and shortest days).
    • Altitude: Higher altitude corresponds to lower temperatures.
    • Ocean Currents: Influence the temperature and moisture content of the air.

    Spatiotemporal Patterns and Distribution of Temperature and Rainfall in Ethiopia

    • Altitude is a major determinant of temperature in Ethiopia, with colder temperatures at higher elevations.
    • Latitude and proximity to the equator result in variations in daily temperatures.
    • Rainfall is complex, varying across regions and seasons. It's affected by the ITCZ position, equatorial westerlies, and trade winds.
    • Four rainfall regions are identified in Ethiopia: summer rainfall, all-year-round rainfall, autumn and spring, and winter rainfall. Each region has distinct characteristics and rainfall patterns.

    Agro-ecological Zones of Ethiopia

    • Ethiopia is divided into five agro-ecological zones (Wurch, Dega, Weyna Dega, Kolla, and Bereha) based primarily on temperature and altitude.
    • Each zone has a unique temperature range, rainfall pattern, and suitability for agriculture.

    Climate Change/Global Warming

    • Climate change is a natural phenomenon, but current changes are largely attributed to human activities.
    • Human activities have increased greenhouse gas concentrations in the atmosphere.
    • Climate change impacts include variations in temperature, higher minimum temperatures, and changes in rainfall patterns. These include more extreme events, such as drought and floods

    Climate Response Mechanisms

    • Mitigation: Actions to reduce greenhouse gas emissions. Examples include renewable energy sources and efficient transportation.
    • Adaptation: Adjusting to the effects of climate change. Strategies include building flood defenses, water management, and more resilient agricultural practices.
    • Climate change's impact on human health, agriculture, and ecosystems are significant.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Description

    Explore the diverse climates of Ethiopia and the Horn region influenced by geographical factors such as altitude and proximity to the equator. This quiz delves into the elements of weather and climate controls, providing a comprehensive understanding of how they interact over time. Test your knowledge on how various controls shape regional climates.

    More Like This

    Ethiopia Weather and Climate
    12 questions
    Climate of Ethiopia and the Horn
    41 questions
    Ethiopia's Climate and Weather Basics
    91 questions
    Use Quizgecko on...
    Browser
    Browser