Lect 1 Flashcards
1
Q
Climate (definition)
A
Average weather of a region over a 30+ year period
2
Q
Diffusion
A
Random Brownian motion of molecules IN A FLUID
3
Q
Advection
A
Large scale processes (e.g currents) that CIRCULATE A FLUID
4
Q
Low Pressure System
A
Hot air rises
CCW Winds
5
Q
High Pressure System
A
Cool Air sinking
CW Winds
6
Q
ITCZ
A
Inter Tropical Convergence Zone -convergence of trade winds -migrates annually: •To N in N.Hemi Summer (Cancer) •To S in S.Hemi Summer (Capricorn)
7
Q
Azores High
A
Semi permanent HIGH PRESSURE SYSTEM
8
Q
Coriolis Effect
A
Curved trajectory of objects not connected to Earth:
•CW in N.Hemi
•CCW in S.Hemi
9
Q
Delta 18O
A
Isotopic fractionation due to:
- Raleigh Distillation
- Rainout Effect (>rainout = <18O)
- Temp Effect (Lower T= > fract.)
10
Q
SMOW
A
Standard Mean Ocean Water
1 18O : 499 16O
( 18/16 Sample - 18/16 Standard ) / 18/16 Stand x100
11
Q
delta18O signatures
A
Incr. values (+ve) = ice sheet formation and cold Temps
12
Q
Global Circulation Model
A
3 Cell Model
