Weather Overview

Overview of Weather

• Weather refers to the temporary and local conditions of the atmosphere at a specific place and time
• It is a combination of temperature, humidity, cloudiness, wind, and precipitation

Factors Affecting Weather

• Atmospheric Conditions
  • Temperature: influenced by latitude, altitude, and time of day
  • Humidity: amount of water vapor in the air
  • Atmospheric pressure: high and low-pressure systems
• Solar Radiation
  • Amount of energy received from the sun
  • Variations in solar radiation due to Earth's tilt and orbit
• Wind Patterns
  • Global wind patterns: trade winds, westerlies, and jet stream
  • Local wind patterns: sea breezes, mountain breezes, and valley breezes
• Ocean Currents
  • Heat transfer between oceans and atmosphere
  • Influence on regional climate and weather patterns

Weather Systems

• High-Pressure Systems
  • Characterized by sinking air, clear skies, and fair weather
  • Associated with anti-cyclones and fair weather
• Low-Pressure Systems
  • Characterized by rising air, cloudiness, and precipitation
  • Associated with cyclones and stormy weather
• Fronts
  • Boundaries between air masses of different temperatures and humidity
  • Types: cold front, warm front, stationary front, and occluded front

Weather Phenomena

• Clouds
  • Classification: cumulus, stratus, cirrus, and nimbus
  • Formation: condensation, evaporation, and updrafts
• Precipitation
  • Types: rain, snow, sleet, hail, and freezing rain
  • Formation: condensation, nucleation, and precipitation processes
• Severe Weather
  • Thunderstorms: lightning, thunder, and strong winds
  • Tornadoes: rotating columns of air
  • Hurricanes and typhoons: large-scale storm systems

Weather Forecasting

• Observation
  • Weather stations: surface weather observations
  • Radar and satellites: remote sensing of weather patterns
• Modeling
  • Numerical weather prediction (NWP) models
  • Ensemble forecasting: multiple models and scenarios
• Forecasting
  • Short-term forecasting: nowcasting and short-range forecasting
  • Long-term forecasting: climate forecasting and seasonal forecasting

Overview of Weather

• Weather is a combination of temporary and local conditions of the atmosphere, including temperature, humidity, cloudiness, wind, and precipitation.

Factors Affecting Weather

• Atmospheric Conditions
  • Temperature influences weather patterns and is affected by latitude, altitude, and time of day.
  • Humidity is the amount of water vapor in the air, which affects weather.
  • Atmospheric pressure can be high or low, leading to different weather patterns.
• Solar Radiation
  • The amount of energy received from the sun varies due to Earth's tilt and orbit.
• Wind Patterns
  • Global wind patterns include trade winds, westerlies, and the jet stream.
  • Local wind patterns include sea breezes, mountain breezes, and valley breezes.
• Ocean Currents
  • Ocean currents transfer heat between the oceans and atmosphere, influencing regional climate and weather.

Weather Systems

• High-Pressure Systems
  • High-pressure systems are characterized by sinking air, clear skies, and fair weather.
• Low-Pressure Systems
  • Low-pressure systems are characterized by rising air, cloudiness, and precipitation.
• Fronts
  • Fronts are boundaries between air masses of different temperatures and humidity.
  • Types of fronts include cold fronts, warm fronts, stationary fronts, and occluded fronts.

Weather Phenomena

• Clouds
  • Clouds are classified into cumulus, stratus, cirrus, and nimbus.
  • Clouds form through condensation, evaporation, and updrafts.
• Precipitation
  • Precipitation types include rain, snow, sleet, hail, and freezing rain.
  • Precipitation forms through condensation, nucleation, and precipitation processes.
• Severe Weather
  • Thunderstorms are characterized by lightning, thunder, and strong winds.
  • Tornadoes are rotating columns of air.
  • Hurricanes and typhoons are large-scale storm systems.

Weather Forecasting

• Observation
  • Weather stations provide surface weather observations.
  • Radar and satellites allow for remote sensing of weather patterns.
• Modeling
  • Numerical weather prediction (NWP) models are used to forecast weather.
  • Ensemble forecasting involves multiple models and scenarios.
• Forecasting
  • Short-term forecasting involves nowcasting and short-range forecasting.
  • Long-term forecasting includes climate forecasting and seasonal forecasting.

Learn about the temporary and local conditions of the atmosphere, factors affecting weather, and their importance. This quiz covers atmospheric conditions, solar radiation, and other factors that influence weather.