118 Chapter 5 <strong>in</strong> <strong>the</strong> NUV considerably, and thus, eases <strong>the</strong> setup of an efficient retrieval approach. F<strong>in</strong>ally, for GOME(-2), SCIAMACHY and similar <strong>in</strong>struments <strong>in</strong> <strong>the</strong> future we propose to retrieve cloud parameters from <strong>the</strong> NUV and NIR w<strong>in</strong>dow comb<strong>in</strong>ed. For OMI-type <strong>in</strong>struments that lack <strong>the</strong> NIR spectral w<strong>in</strong>dow we propose to use <strong>the</strong> NUV w<strong>in</strong>dow <strong>in</strong>clud<strong>in</strong>g <strong>the</strong> R<strong>in</strong>g structures, which has <strong>the</strong> potential to retrieve all cloud parameters, i.e. cloud pressure, cloud fraction and cloud optical thickness for cloud fractions larger than 0.4. However, due to <strong>the</strong> sensitivity of <strong>the</strong> retrieval to an additional noise floor on <strong>the</strong> measurement, but also due to <strong>the</strong> importance to use <strong>the</strong> spectral cont<strong>in</strong>uum <strong>in</strong> <strong>the</strong> NUV w<strong>in</strong>dow, an accurate calibration of <strong>the</strong> measurement is crucial for this type of cloud parameter retrieval.
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VRIJE UNIVERSITEIT Rotational Raman
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Contents 1 Introduction 1 1.1 Obser
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1 Introduction 1.1 Observing skylig
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Introduction 3 Extracting the wealt
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Introduction 5 and Spurr, 1997, Vou
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Introduction 7 energy: E rot (v,J)
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Introduction 9 Figure 1.4: Probabil
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Introduction 11 scattered radiance
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Introduction 13 approximation in wh
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Introduction 15 scattering have bee
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2 A doubling-adding method to inclu
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40 Chapter 3 nm with a spectral res
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42 Chapter 3 contributions of lower
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44 Chapter 3 if we use the effectiv
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46 Chapter 3 This in turn results i
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48 Chapter 3 This may be shown in a
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50 Chapter 3 The forward and adjoin
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52 Chapter 3 Here, ∆ = diag [1, 1
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54 Chapter 3 Figure 3.3: Relative R
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56 Chapter 3 biases the simulation
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58 Chapter 3 3.4.2 Approximation me
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60 Chapter 3 where I ram,app and I
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62 Chapter 3 3.5 Simulation of pola
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64 Chapter 3 Figure 3.10: Relative
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66 Chapter 3 dependence on the vert
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