Deutsches Ozeanographisches
Datenzentrum Inventur der Sonne1-Reise SO235 (DOD-Ref-No.20140029)
Inventory of Sonne1 Cruise SO235 (DOD-Ref-No.20140029)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Sonne1 SO235 22.07.2014 - 08.08.2014 OASIS
 
Indian Ocean  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Kruger Kirstin GEOMAR Helmholtz-Zentrum fur Ozeanforschung Kiel Port Louis Male   

Ziel der Reise / Objectives of Cruise:

Within the frame work of the BMBF-project OASIS ("Organic very short lived substances and their Air Sea Exchange from the Indian Ocean to the Stratosphere") the research cruise SO235 of the German research vessel SONNE was organized and conducted by the University of Oslo, Norway (www.uio.no) together with the GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany (www.geomar.de) from July 23 to August 07, 2014 in the tropical West Indian Ocean. The SO235 cruise was planned as a pilot study to the tropical West Indian Ocean. 23 scientists from Germany, Austria, China, Italy, Malaysia, UK and USA and one observer from Mauritius took part. The research covered oceanic sources, air-sea gas exchange between the atmosphere and the ocean, and the transport of ocean trace gases from the Indian Ocean to the stratosphere during the southwest Monsoon. This research was funded from the BMBF with the project SO235-OASIS (Grant: 03G0235A). Spatial and temporal variability in production and sea-to-air flux of short-lived halogenated and sulphuric trace gases creates strongly varying oceanic distributions and thus also varying atmospheric contributions. The current impact of the natural ozone depleting substances is still uncertain and future changes in the mechanisms, that regulate their emissions to the atmosphere, their transport, and their chemical processing are largely unknown. Therefore the oceanic emissions have the potential to cause surprises in the evolution of the stratospheric ozone and aerosol layer in a changing climate, unless they are better understood. The tropical Indian Ocean measurements are thus needed to improve the understanding of future stratospheric halogen and sulphur loading and therewith on the ozone depletion and the radiative forcing of the future climate. The results of the SO235 campaign will contribute to new scientific insights of the United Nations Montreal Protocol on Substances that Deplete the Ozone Layer, to the United Nations Framework Convention on Climate Change, and to global climate change research in general.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
AWI Bracher Astrid 216 samples B02
Phytoplankton pigments (e.g. chlorophyll, fluorescence)
Discrete measurements of phytoplankton pigments (surface and deep water). no
GEOMAH Marandino Christa A. 280 samples B06
Dissolved organic matter (e.g. DOC)
Samples for measuring CDOM. no
GEOMAH Quack Birgit 15 profiles H10
CTD-Stations
Measurement of temperature, salinity, oxygen and fluorescence. no
AWI Bracher Astrid 15 deployment H17
Optics (e.g. underwater light levels)
Deployment of FRRF (in-situ optical and fluorescence measurements). no
GEOMAH Quack Birgit 230 samples H33
Other dissolved gases
Discrete measurements of halocarbons (surface and deep water). no
GEOMAH Marandino Christa A. 15 day(s) H33
Other dissolved gases
Underway measurement of OCS, CO. no
GEOMAH Marandino Christa A. 400 samples H33
Other dissolved gases
Measurement of discrete samples of DMS, isoprene (underway and CTD). no
GEOMAH Bange Hermann W. 15 day(s) H33
Other dissolved gases
Underway measurement of N2O and CO. no
GEOMAH Bange Hermann W. 210 samples H33
Other dissolved gases
Discrete measurements of N2O, NH2OH and CH4 (surface and deep water). no
GEOMAH Quack Birgit 1 n miles H80
Other physical measurements
Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on yes
GEOMAH Quack Birgit 250 samples H90
Other chemical oceanographic measurements
Samples for measuring iodide and iodate (Braunschweig and Kiel). no
GEOMAH Quack Birgit 430 samples H90
Other chemical oceanographic measurements
Discrete measurements of nutrients (surface and deep water). no
UIO Kruger Kirstin 89 profiles M01
Upper air observations
Radiosonde launches (measurement of meteorological variables). no
UEAN Baker Alex 10 samples M71
Atmospheric chemistry
Discrete measurement of aerosol samples. no
GEOMAH Quack Birgit 107 samples M71
Atmospheric chemistry
Discrete measurements of trace gases in the atmosphere (alkanes, alkenes, halocarbons, DMS, etc.). no
GEOMAH Marandino Christa A. 15 day(s) M71
Atmospheric chemistry
Measurement of sea-to-air fluxes of CO2, DMS and acetone. no
UIO Kruger Kirstin 6 profiles M71
Atmospheric chemistry
Ozonesonde launches. no
IUPHD Platt Ulrich 15 day(s) M71
Atmospheric chemistry
Measurement of IO, BrO and other atmospheric trace gases via MAX-DOAS, CE-DOAS. no
GEOMAH Marandino Christa A. 15 day(s) M90
Other meteorological measurements
Measurement of meteorological variables such as turbulences for flux measurements. no
UIO Kruger Kirstin 15 day(s) M90
Other meteorological measurements
Measurement of rain drops (amount and drop size), 2 radiometers. no
16.11.2019