ATMOSPHERE Flashcards
WHAT PRESSURE IS AT THE EQUATOR, WHY
- LOW PRESSURE
- THE HEAT MAKES AIR EXPAND AND RISE
PRESSURE GRADIENT FLOW
AIR FLOWS FROM HIGH PRESSURE TO LOW
GEOSTROPHIC FLOW
PRESSURE GRADIENT PULLS AIR TO THE NOTH BY THE CORIOLIS DEFLECTS IT TO THE SOUTH, AIR THEN RUNS PARALLEL TO ISOBAR
JET STREAM
West-to-east winds moving at the top of the troposphere, following a pressure gradient. The jet stream typically meanders, and roughly follows to the polar front
ROSBY WAVES
Large-scale undulations of the polar front and the jet stream
* AFFECT VELOCITY AND POSITION OF JET STREAM
ANTICYCLONIC FLOW
High pressure systems
Winds spiral out clockwise
Divergence system, winds flow down
CYCLONIC FLOW
Low pressure systems
Rising air and converging surface winds spiraling inwards
Counterclockwise
Convergence system, winds flow up
COLD FRONT
- COLD POLAR IS DENSER AND SLIDES UNDER THE WARM AIR TO PUSH IT UPWARDS
- ADIABATIC COOLING AND RAIN
WARM FRONT
- WARM AIR FROM TOPICS ADVANCES ON COLD AIR AND FLOWS OVER TOP
WHAT SPHERE IS THE OZONE
MESOSPHERE
SATURATION VAPOUR PRESSURE
AMOUNT OF WATER IN EQUILIBRIUM WITH WATER OR ICE
RISES WITH TEMPERATURE
LATENT HEAT
ENERGY ADDED OR REMOVED WITHOUGHT CHANGING TEMP
UNDERSATURATION
PARTIAL PRESSURE OF WATER VAPOUR IS LOWER THAT SATURATION VALUE
ITCZ
- GLOBAL AIR CIRCULATION
- CONVERGENCE ZONE