VSLS measurements in the tropical East Atlantic
description
Transcript of VSLS measurements in the tropical East Atlantic
VSLS measurementsin the tropical East Atlantic
Steffen Fuhlbrügge, Kirstin Krüger, Birgit Quack, Elliot Atlas,Helmke Hepach, Franziska Wittke and the DRIVE-Poseidon Team
14.07.2011
DRIVE: HySplit 10-day backward trajectories
HySplit calculations-- start of the cruise-- end of the cruise
Air sample analysis: Elliot AtlasFlux calculations: Helmke Hepach, PhD thesis
CHBr3:atmospheric concentrations [ppt]and air-sea flux (pmol/(m²*hr)]
Leg 2 CHBr3: atmospheric concentration Leg 2 CHBr3: air-sea fluxpptpmol
(m²*hr)
Leg 3 CHBr3: atmospheric concentration ppt
Air sample analysis: Elliot AtlasFlux calculations: Helmke Hepach, PhD thesis
CH2Br2:atmospheric concentrations [ppt]and air-sea flux (pmol/(m²*hr)]
Leg 3 CH2Br2: atmospheric concentration ppt
Leg 2 CH2Br2: atmospheric concentration Leg 2 CH2Br2: air-sea fluxpptpmol
(m²*hr)
Air sample analysis: Elliot AtlasFlux calculations: Helmke Hepach, PhD thesis
CH3I:atmospheric concentrations
[ppt]
Leg 2 CH3I: atmospheric concentration ppt
Leg 3 CH3I: atmospheric concentration ppt
CHBr3:MLH = -0.94CH2Br2:MLH = -0.94
CH3I:MLH = -0.54CHBr3:CH2Br2 = 0.97
CHBr3:CH3I = 0.69CH3I:CH2Br2 = 0.74
Correlations:
Date= 24 h station
Comparison/Correlation of trace gases and mixing layer height
Air mass classification: Open ocean5-day backward trajectories
1. station 2. station 3. station
CHBr
3
Air mass classification: Coast1-day backward trajectories
4. station 5. station 6. station
CHBr
3pp
t
1
rwd = 0.85
= 24 h station
Lower values ≈ younger sources