1. CAVIAR – Continuum Absorption by Visible and Infrared Radiation and its Atmospheric Relevance Status Keith Shine Department of Meteorology, University of Reading September 2010

2. Reminder of Overall Schedule Formal start of CAVIAR: 1 October 2006 Original end date: 30 September 2010 New end date: 30 June 2011 Most CAVIAR PDRAs and PhDs will finish in late 2010/early 2011 Final report due: 29 September 2011 We are now roughly at month 48 (frame of reference depends on when students and PDRAs started)

3. Reminder of structure 1 line-by-line radiative transfer models existing continuum models existing spectral line databases targeted lab measurements field campaigns Instrument upgrades and calibration dimer model development dimer model refinement new continuum model impact on understanding of atmospheric processes, incl climate and remote sensing preparation of continuum model for community use synthesis refinement of line database Rough Guide: Green: On original schedule Amber: Somewhat behind original schedule Red: Limited activity so far possible

4. WP1 Molecular Modelling WP2 Laboratory Measurements WP3 Field Measurements WP4 SynthesisEveryone! WP5 Impact on Understanding WP6 Provision of model for wider use Everyone! Reminder of Structure 2

5. Reminder of original schedule We are hear(ish)!

6. Royal Society Meeting Led by Jonathan Tennyson Water in the gas phase (both atmospheric science and astrophysics) 13 to 14 June 2011 at the Royal Societys new out-of-town Kavli Centre in Buckinghamshire Good representation of CAVIAR speakers and will lead to special issue of Philosophical Transactions of the Royal Society

7. Key things for today How close are we to being able to perform a synthesis of theory, lab and field measurements for the CAVIAR continuum? What are plans for papers? What further meetings do we need to provide consolidation of our achievements?