Minimize SCIAMACHY Product Handbook

FrontPage



  CHAPTER 1  
1 Introduction 1-01
1.2 The Road to SCIAMACHY 1-02
  The Initial Phases of SCIAMACHY 1-05
1.3 SCIAMACHY´s Goals 1-06
  The Atmospheric Layers 1-07
  Anthropogenic Impact on the Earth-Atmosphere System 1-08
  Tropospheric Chemistry 1-09
  The Tropopause Region 1-10
  Stratospheric Chemistry and Dynamics 1-11
  Mesospheric Chemistry and Dynamics 1-12
  Global Warming and Climate Change

1-12

 

 

CHAPTER 2

 
2 SCIAMACHY: The Instrument onboard ENVISAT 2-01
2.1 Measurement Goals 2-01
2.2 SCIAMACHY on ENVISAT 2-02
  Orbit and Attitude 2-02
  ENVISAT On-board Resources 2-04
  ENVISAT Ground Segment 2-05
2.3 Instrument Description 2-06
2.3.1 Science Requirements and Instrument Concept 2-06
2.3.2 Optical Assembly 2-07
  Scanner Mechanisms and Baffles 2-08
  Telescope and Spectrometer 2-09
  Detector Modules 2-10
  Calibration Unit 2-11
  Polarization Measurement Device 2-11
2.3.3 Thermal Subsystems 2-12
  Radiator A and Active Thermal Control 2-12
  Thermal Bus and Radiant Cooler Assembly 2-12
2.4 Instrument Operations 2-13
2.4.1 Sun and Moon Observation 2-15
  Sun Occultation 2-15
  Sub-solar Observations 2-15
  Moon Occultation 2-16
2.4.2 Routine Measurement Orbit 2-17
2.4.3 Parameter Tables 2-18
2.4.4 Measurement States 2-18
  Nadir States 2-20
  Limb States 2-20
  Occultation States 2-21
  Calibration & Monitoring States 2-21
2.4.5 Timelines 2-21
  Concept 2-21
  Definition 2-22
2.4.6 SCIAMACHY Operations Setup

2-23

 

 

CHAPTER 3

 
3 SCIAMACHY's View of the Earth's Atmosphere 3-01
3.1 Tropospheric Composition - Greenhouse Gases 3-01
  Carbon Dioxide – CO2 3-01
  Methane – CH4 3-02
  Water Vapour – H2O 3-03
  Heavy Water – HDO 3-04
  Absorbing Aerosol Index and Precipitation 3-04
3.2 Tropospheric Composition – Reactive Gases 3-05
  Nitrogen Dioxide – NO2 3-05
  Sulphur Dioxide – SO2 3-07
  Formaldehyde (HCHO) and Glyoxal (CHOCHO) 3-08
  Carbon Monoxide – CO 3-09
  Tropospheric Halogen Oxides – BrO and IO 3-10
3.3 The Stratospheric Ozone Layer 3-11
  Ozone – O3 3-12
  Chlorine Dioxide – OClO 3-14
  Bromine Oxide – BrO 3-15
  Polar Stratospheric Clouds – PSC 3-15
3.4 The Upper Atmosphere and Solar Activity 3-16
  Noctilucent Clouds – NLC 3-16
  Mesospheric Ozone and the October/November 2003 Solar Storm 3-17
  Mesopause Temperatures 3-18
  Observing the Active Sun - The Mg II Index 3-19
3.5 The Earth Surface and Beneath 3-20
  Land Vegetation Characteristics 3-20
  Oligotrophic Oceanic Regions 3-21
  Oceanic Phytoplankton Characteristics

3-21

 

 

CHAPTER 4

 
4 Calibration & Monitoring 4-01
4.1 Calibration 4-01
4.1.1 The General Calibration Equation 4-01
4.2 Detector Corrections 4-04
  Channels 1-5 (UV-VIS-NIR) 4-04
  Channels 6-8 (SWIR) 4-05
4.3 Wavelength Calibration 4-06
4.4 Stray Light 4-07
  Spectral Stray Light 4-07
  Spatial Stray Light 4-08
4.5 Polarisation 4-08
4.6 Radiometric Calibration 4-12
4.7 Optical Throughput Monitoring

4-13

 

 

CHAPTER 5

 
5 From Radiation Fields to Atmospheric Concentrations
– Introduction into the Retrieval of Geophysical Parameters
5-01
5.1 Radiative Transfer in the Earth’s Atmosphere 5-02
5.2 Total Column: Nadir Retrieval Schemes of DOAS-type 5-05
5.3 Cloud and Aerosol Parameter Retrieval 5-07
5.3.1 Cloud Parameters 5-09
5.3.2 Tropospheric Aerosol Parameters 5-10
5.4 Profile Retrieval 5-11
5.4.1 Inversion Theory 5-11
5.4.2 Application of Inversion Theory to Limb Retrieval 5-13
5.5 Derivation of Tropospheric Information 5-15
5.5.1 Reference Sector Method 5-16
5.5.2 Limb/Nadir Matching 5-16
5.6 Data Assimilation and Value Added Products 5-16
5.6.1 Tropospheric Trace Gases – the NO2 Example 5-16
5.6.2 Stratospheric O3

5-17

 

 

CHAPTER 6

 
6 SCIAMACHY Operational Data Products and Algorithms 6-01
6.1 Level 0 Products 6-01
6.2 Operational Level 1b Products and Algorithms 6-01
6.2.1 Level 1b Processor 6-01
6.2.2 Relevant calibration parameters 6-03
6.2.2.1 Memory Effect and Non-Linearity correction 6-03
6.2.2.2 Dead and Bad Pixel Mask 6-03
6.2.2.3 Dark correction 6-04
6.2.2.4 Stray Light Correction 6-04
6.2.2.5 Wavelength Calibration 6-04
6.2.2.6 PPG/Etalon Correction 6-04
6.2.2.7 Polarization Correction 6-05
6.2.2.8 Radiometric Correction 6-05
6.2.2.9 Sun Mean Reference 6-05
6.2.2.10 Degradation Correction 6-05
6.2.3 Relevant Auxiliary Data 6-06
6.2.4 Degradation Correction: m-factors 6-06
6.2.4.1 Short-Term Concept 6-07
6.2.4.2 Long-Term Concept 6-07
6.2.5 Algorithm Baseline Documentation 6-07
6.2.6 Data Format Description 6-07
6.2.7 Product Quality Information 6-07
6.3 Operational Level 2 Products and Algorithms 6-07
6.3.1 Cloud and Aerosol Parameters 6-09
6.3.2 Nadir Trace Gas Retrievals 6-09
6.3.2.1 Ozone Total Column 6-10
6.3.2.2 NO2 Total Column 6-10
6.3.2.3 BrO Total Column 6-11
6.3.2.4 SO2 Total Column 6-11
6.3.2.4.1 Content and filling of the database 6-12
6.3.2.4.2 Application of the background values 6-12
6.3.2.5 H2O Total Column 6-13
6.3.2.7 CO Total Column 6-13
6.3.3 Limb 6-14
6.3.3.1 Ozone Profile 6-14
6.3.3.2 NO2 Profile 6-15
6.3.3.3 BrO Profile 6-15
6.3.3.4 Cloud flagging and top height 6-16
6.3.4 Algorithm Baseline Documentation 6-16
6.3.5 Data Format Description 6-16
6.3.6 Product Quality Information 6-16
6.3.7 Software Tools

6-17

 

 

ANNEX

 
Annex 01 References Chapter 1 annex-01
  References Chapter 2 annex-02
  References Chapter 3 annex-03
  References Chapter 4 annex-07
  References Chapter 5 annex-08
  References Chapter 6 annex-12
Annex 02 Atmospheric Gases annex-13
Annex 03 Abbreviations and Acronyms annex-14
FAQ 01 Frequently Asked Questions and typical EOHelp replies
faq-01
     
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