Roughness Correction Working Group Report July 21, 2010 Seattle 6 th Aquarius/SAC-D Science Team meeting.

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Presentation transcript:

Roughness Correction Working Group Report July 21, 2010 Seattle 6 th Aquarius/SAC-D Science Team meeting

Membership S. Brown R. Lang D. LeVine L. Jones D. Vandenmark, B. Chapron F. Wentz S. Yueh Peter Naoto Carl Liang Alex Fred Josehph Emmanuel Add others

Roughness Working Group Charter Provide and validate algorithms to compute L- band Tb offset due to surface roughness

Strawman Plan Pre-Launch: Now until April 2011 – SMOS data analysis for Aquarius pre-launch model – Generate software tools for post-launch data analysis – Calibration site selection In Orbit Checkout (IOC): L+45 days – Assess the reasonableness of instrument performance Telemetry Analysis: Time series of system noise, temperature, voltage and current – Quick analysis of pointing – Quick analysis of TB and sigma0 quality – Quick model assessment – Daily/Weekly Status? – Data available from L+25 to L+45, about 2 weeks of data

Strawman Plan Cal/val phase (L+6 months) – Calibration bias removal – in coordination with cal WG Pointing angle analysis using TB and sigma0 changes along land/sea crossings TB stability and drift analysis correction in coordination with Rad Cal WG Sigma0 calibration stability Aq TB-SMOS-TB cross-over comparison (doug) – Develop model function and correction TB model function (wind, SST, and wave matchup) Sigma0 model function (Aquarius, NCEP wind, SST, and wave matchup) TB-sigma0 model function (Aquarius, NCEP, SST, and wave matchup) Alternate wind products for matchup: ecmwf, ssmi wind, no-gap, ncep reanalysis, oceansat-2, windsat, (Fred et al. carl, Linny for ssmi matchup, and simon) – Assess roughness correction algorithms Baseline: SSS= aTB+bSST+cW Various combinations of NCEP wind, sigma0, sigma0-wind, MWR-wind, wave height, and mss – MWR Wind becomes available from CONAE: 5 mos after launch – MWR rain flag available in L+30 days (Linny) – Iterations of steps above – BiWeekly status/tagup – Fact-to-face workshops (L+3 and L+5) – Reach consensus on correction algorithm and report to science team

Working Group Plan Biweekly Telecon Aquarius Forum information exchange and Wiki for FAQ and information depository Face-to-face meetings (L-1, L+3 and L+5)