Table of Contents

IASI Level 1 Product Guide

Table of contents

  1. Introduction

  2. Reference Documents
    2.1 EPS programme documents
    2.2 SAF documents
    2.3 Papers, reports and other technical documentation

  3. IASI Level 1 Products Configuration History

  4. IASI Level 1 Products Overview
    4.1 The IASI instrument
      4.1.1 Spectral characteristics of IASI
      4.1.2 Instrument modes
      4.1.3 IASI on-board processing
      4.1.4 Sampling characteristics of IASI
    4.2 Overview of the ground processing and calibration
      4.2.1 IIS chain
      4.2.2 ISRFEM chain
      4.2.3 IASI Level 1 chain
        4.2.3.1 Level 1a
        4.2.3.2 Level 1b
        4.2.3.3 Level 1c
      4.2.4 Quality control
        4.2.4.1 On-board processor
        4.2.4.2 Level 1 processor
    4.3 IASI Level 1 product characteristics
      4.3.1 General
      4.3.2 Quality information in the product
    4.4 Summary of IASI Level 1 product applications

  5. Data Viewing and Reading
    5.1 Generic tools for data reading
    5.2 BEAT for data reading

  6. IASI Level 1 Product Formats and Dissemination
    6.1 EPS products available dissemination means
      6.1.1 Satellite Direct Broadcast Service
      6.1.2 EUMETCast
      6.1.3 GTS/RMDCN
      6.1.4 EUMETSAT Data Centre
    6.2 IASI products dissemination
      6.2.1 Near-real-time dissemination
      6.2.2 Archive retrieval
    6.3 IASI EPS native product formats
      6.3.1 The EPS native formats
        6.3.1.1 General overview of the EPS generic product format
        6.3.1.2 Granularity of the EPS products
        6.3.1.3 Product format version control
        6.3.1.4 Product naming convention
      6.3.2 The IASI Level 1 product formats
        6.3.2.1 IASI Level 1a
        6.3.2.2 IASI Level 1b
        6.3.2.3 IASI Level 1c
      6.3.3 Decoding of IASI spectra using scaling factors
      6.3.4 The computation of wavenumbers
        6.3.4.1 IASI Level 1a spectra
        6.3.4.2 IASI Level 1b/c spectra
        6.3.4.3 Interpolation in the sounder spectral database
    6.4 The HDF format
    6.5 The WMO formats

  7. IASI Level 1 Product Processing Algorithms

  8. IASI Level 1 Products Validation and Monitoring

  9. Record Description of the IASI Level 1 Products

  10. Spectral Channels used for IASI Level 1c Subset Product

Common Appendices

  Appendix A: Summary of all EPS Products

  Appendix B: Metop Operational Orbit
    B.1 Metop orbit basic parameters
    B.2 Metop attitude law
      B.2.1 Metop yaw steering law
    B.3 Metop orbit and attitude propagation
      B.3.1 Orbit propagation
      B.3.2 Metop attitude propagation

  Appendix C: Data Types Used by the Generic EPS Format
    C.1 Basic data types
    C.2 Compound data types

  Appendix D: Format and Contents of the GRH and IPR
    D.1 Generic Record Header
      D.1.1 RECORD_CLASS enumerated values
      D.1.2 INSTRUMENT_GROUP enumerated values
      D.1.3 RECORD_SUBCLASS values
      D.1.4 RECORD_SUBCLASS_VERSION values
      D.1.5 RECORD_SIZE values
      D.1.6 Definitions of RECORD_START_TIME and RECORD_STOP_TIME values
    D.2 Generic Internal Pointer Record

  Appendix E: Acronyms and Abbreviations