Climatic Hazards Flashcards
El nino…
Weakened or reversed trade winds.
La nina…
Upwelling. Westward winds. Rain LP- South East Asia&Australia. Drought- South America. HP.
Anticyclone…
Clear skies. Light winds. Falling HP.
Depression…
Rain. High winds.
Weather…
State of atmosphere in particular place and time.
Climate…
Weather conditions covering an area in general or over a long period.
Hadley…
Left… LP. Less dense. Warm moist air. Rising. Top left… rain.
Loses heat. Top right sunny.
Right… HP. Dense. Cooling air. Falling.
Equator to 30 degrees north or south.
Ferrell…
Left… LP. Less dense. Warm moist air. Rising. Top left… rain.
Loses heat. Top right sunny.
Right… HP. Dense. Cooling air. Falling.
30 degrees north or south to 60 degrees north or south.
Polar…
Left… LP. Less dense. Warm moist air. Rising. Top left… rain.
Loses heat. Top right sunny.
Right… HP. Dense. Cooling air. Falling.
60 degrees north or south to 90 degrees north or south
.
Albedo effect…
When sun rays hit a shiny surface and reflects back into atmosphere.
Polar air mass…
Freezing arctic air comes from north.
Maritime…
Sucks up water from Atlantic Ocean. Wet.
Continental…
Dry came over Europe. Warm dry air.
Tropical…
Hot air from North Africa and Mediterranean.
Jet stream…
Power over everything. Wind up to 250mph. If north blocks polar and maritime😊 If south blocks tropical and continental😩
Sahel, North Africa…
Drought. Ethiopia South East of Sahel. Water shortage. Wildfires, crop failure. Early warning system and drought resistant crops (expensive).
Desertification…
The process by which land becomes desert.
Tropical storm…
Sea water between 26 and 28 degrees. Rises cools and condenses HP and LP together. Coriolis effect, spins because of earths rotation.
Boscastle, North Cornwal, UK…
Flooding. Saturated soil- cant absorb anymore water. Heavy localised rainfall. Narrow river channel. 90% dependent on tourism. Raised car park.
