Table of Contents

IASI Level 2 Product Guide

Table of contents

  1. Introduction

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

  3. IASI Level 2 Products Configuration History

  4. IASI Level 2 Products Overview
    4.1 The IASI instrument
      4.1.1 IASI Level 2 processing and data usage
      4.1.2 Sampling characteristics of IASI and collocation with ATOVS
    4.2 Overview of the Level 2 processing
      4.2.1 IASI Level 2 pre-processing
      4.2.2 IASI Level 2 cloud detection and retrieval selection
        4.2.2.1 Choice for pure IASI or combined IASI/ATOVS/AVHRR retrieval
        4.2.2.2 Cloud detection
        4.2.2.3 Determination of cloud top height and fractional cloud cover
        4.2.2.4 Selection of clear, cloud or cloud-clearing retrieval
     4.2.3 IASI Level 2 product retrieval
        4.2.3.1 Determination of climatology profiles and surface parameters
        4.2.3.2 IASI channel or super channel selection
        4.2.3.3 IASI first retrieval
        4.2.3.4 IASI iterative retrieval
        4.2.3.5 Temperature and water vapour profiles
     4.2.4 Derivation of Single Sensor Error Statistics for the IASI SST L2Pcore product
    4.3 IASI Level 2 products characteristics
      4.3.1 General
      4.3.2 Vertical resolution of the temperature and humidity profiles
      4.3.3 Instrument mode and navigation information
      4.3.4 Quality and processing information in the product
    4.4 IASI Level 2Pcore SST product
    4.5 Summary of IASI Level 2 product applications

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

  6. IASI Level 2 Product Formats and Dissemination
    6.1 EPS products available dissemination means
      6.1.1 EUMETCast
      6.1.2 GTS/RMDCN
      6.1.3 EUMETSAT Data Centre
    6.2 IASI products dissemination
      6.2.1 Near-real-time dissemination
      6.2.2 Archive retrieval
      6.2.3 FTP dissemination
    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 2 product formats
    6.4 The HDF format
    6.5 The WMO formats
    6.6 The netCDF format

  7. IASI Level 2 Products Processing Algorithms

  8. IASI Level 2 Products Validation and Monitoring
    8.1 In general
    8.2 IASI L2Pcore SST product

  9. Record Description of the IASI Level 2 Products

  10. BUFR Descriptor Sequences for the IASI Level 2 Product
    10.1 Descriptor sequences of the reduced IASI Level 2 product on the GTS
    10.2 Descriptor sequences of the IASI Level 2 product disseminated on EUMETCast

  11. NetCDF Format Specification for the IASI L2Pcore SST 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