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56 CHAPTER 2. ATMOSPHERE AND REMOTE SENSING inverted to obtain concentration distributions by tomographic techniques. In contrast, the Airborne Multi AXis (AMAX) DOAS instrument measures passively the sunlight which is scattered in the earths atmosphere and/or reflected on the ground (right figure). Several small telescopes are used which are directed in various directions and which capture the light simultaneously. Each measurement provides results from several different paths throughout the atmosphere. As the aircraft moves on from measurement to measurement, data of many intersecting light paths is recorded. First tomographic line-integrating indoor measurements of 2D trace gas distributions were realized in the 1990s by using open-path Fourier infrared absorption spectroscopy. There have been improvements in speed and spatial resolution since, but all experiments have been restricted to the laboratory environment so far. Main methods During the last five years, for the first time DOAS two-dimensional tomographic experiments using a larger number (10-90) of intersecting light paths have been carried out (e.g., Pundt [2005b]). At the ground, long path active instruments were used to measure 2D emission plumes from road traffic or horizontal distributions of trace gases (e.g. Pundt et al. [2005c], Lösch [2001], Kunz [2001], Bäuerle [2004], Rippel [2005], Poehler et al. [2005]). Instruments which are more suitable for tomographic applications were developed (Pundt & Mettendorf [2005], Mettendorf [2005]) and the reconstruction methods were validated during an indoor campaign (Mettendorf et al. [2005]). From aircraft, passive instruments were used to measure 2D distributions of a power plant emission plume (Pundt et al. [2005a], Heue et al. [2005]). The quality of the localization and quantification of atmospheric emission plumes has been estimated by means of numerical studies (Knab [2004], Laepple et al. [2004], Hartl et al. [2005a]). In addition, the group participated in two measurement campaigns in the Po-Valley region in the framework of the EU FORMAT project (e.g., Hak et al. [2005]). Subprojects Groundbased DOAS tomography Airborne DOAS tomography Theoretical studies FORMAT: Formaldehyde as a Tracer of Photo oxidation in the Troposphere (EU project) Funding BMBF (TomDOAS) EU (FORMAT) Cooperation University of Bremen FZK Karlsruhe (IMK Karlsruhe) IFU Garmisch-Partenkirchen (IMK Karlsruhe) NILU (Norway) IASB (Belgium) PSI (Switzerland) Anhui Institute (Hefei, China) Publications Peer reviewed Publications 1. Bruns et al. [2004] 2. Fix et al. [2005] 3. Hak et al. [2005] 4. Heckel et al. [2005] 5. Heue et al. [2005] 6. Laepple et al. [2004] 7. Pundt & Mettendorf [2005]
2.4. DOAS TOMOGRAPHY GROUP 57 8. Pundt [2005b] 9. Pundt et al. [2005c] 10. von Friedeburg et al. [2005] 11. Wang et al. [2005b] Other Publications 1. Bruns et al. [2005] 2. Hartl et al. [2005b] 3. Hartl et al. [2005a] 4. Heue et al. [2004] 5. Poehler et al. [2005] 6. Pundt et al. [2005b] 7. Wang et al. [2005a] Doctoral Thesis 1. Heue [2005] 2. Mettendorf [2005] Diploma Thesis 1. Stelzer [2005] 2. Rippel [2005] 3. Knab [2004] 4. Bäuerle [2004] Invited talks 1. Pundt [2005a] 2. I. et al. [2005]
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Institut für Umweltphysik und Arbe
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2.7. CARBON CYCLE GROUP 107 Diploma
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2.7. CARBON CYCLE GROUP 109 2.7.2 S
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2.7. CARBON CYCLE GROUP 111 2.7.4 I
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2.7. CARBON CYCLE GROUP 113 Schell,
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3.1. SOIL PHYSICS 117 Overview We s
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3.1. SOIL PHYSICS 119 In November 2
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3.1. SOIL PHYSICS 121 Major Achieve
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3.1. SOIL PHYSICS 123 3.1.2 X-ray a
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3.1. SOIL PHYSICS 125 3.1.4 Near In
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3.1. SOIL PHYSICS 127 3.1.6 Free Pa
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3.1. SOIL PHYSICS 129 3.1.8 Unsatur
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3.1. SOIL PHYSICS 131 3.1.10 Monito
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3.1. SOIL PHYSICS 133 3.1.12 3D Ful
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3.1. SOIL PHYSICS 135 References Ba
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3.2. ICE AND CLIMATE 137 3.2 Ice an
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3.2. ICE AND CLIMATE 139 regions) a
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3.2. ICE AND CLIMATE 141 3.2.2 Cons
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3.2. ICE AND CLIMATE 143 3.2.4 Clim
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3.2. ICE AND CLIMATE 145 3.2.6 Nove
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3.2. ICE AND CLIMATE 147 Preunkert,
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4.1. GROUNDWATER AND PALEOCLIMATE 1
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4.2. LAKE RESEARCH (LIMNOPHYSICS) 1
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Small-Scale Air-Sea Interaction 5.1
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170 CHAPTER 5. SMALL-SCALE AIR-SEA
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Forschungsstelle “Radiometrie”
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188 CHAPTER 6. FORSCHUNGSSTELLE “
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7.1. PEER REVIEWED PUBLICATIONS 209
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7.2. GREY PUBLICATIONS 215 Grey Pub
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7.3. PHD THESES 217 PhD Theses Baye
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7.4. DIPLOMA THESES 219 Diploma The
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7.5. INVITED TALKS 221 Invited Talk
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7.5. INVITED TALKS 223 Pundt, I. 20
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Institut für Umweltphysik Im Neuen
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