ESA / ECSAT CCIWV.REP.022 Water Vapour Climate Change Initiative (WV_cci) - CCI+ Phase 2 D2.2 TABLE OF CONTENTS 1. INTRODUCTION ........................................................................................................................ 7 1.1 Purpose ............................................................................................................................... 7 1.2 Structure of the document................................................................................................... 7 2. ALGORITHM DEFINITION CDR-3 ............................................................................................
8 2.1 Introduction ......................................................................................................................... 8 2.2 Heritage............................................................................................................................... 8 2.3 SPARC Data Initiative climatology construction ................................................................. 8 2.4 CDR-3 merging algorithm ................................................................................................... 9 2.5 Assumptions and limitations ............................................................................................. 12 3.
ALGORITHM DEFINITION CDR-4 .......................................................................................... 13 3.1 Introduction ....................................................................................................................... 13 3.2 Bias-correction on water vapour profiles .......................................................................... 14 3.2.1 Bias-correction with BBH observations .................................................................. 15 3.2.2 Bias-correction with ACE-FTS observations ..........................................................
18 3.3 CDR-4 merging algorithm ................................................................................................. 19 3.4 Assumptions and limitations ............................................................................................. 20 4. SUMMARY AND CONCLUSIONS ........................................................................................... 23 APPENDIX 1: REFERENCES ....................................................................................................... 24 APPENDIX 2: GLOSSARY ........................................................................................................... 26 v