MARCOOS/ESPreSSO ROMS

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MARCOOS/ESPreSSO ROMS

• RU Coastal Ocean Modeling and Prediction group
• John Wilkin, Gordon Zhang, Julia Levin, Naomi
  Fleming, Javier Zavala-Garay, Hernan Arango

5 km resolution for assimilation 1 km resolution
for forecast NCEP NAM 3-hour meteorology 1-day
average USGS gauge river flow Open boundaries
ROMS MAB-GoM nested within GODAE-HyCOM
operational N. Atlantic (He/NCSU) gt OPeNDAP
data portal gt Assimilation experiments in 2006
(4DVar) gt Glider observation analysis
(Representers)
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Assimilation and observing system design
experiments in 2006 (LaTTE and SW06) gt LaTTE
subdomain RU CODAR (with tides) All glider
CTD All moored T/S gt SW06/MARCOOS/ESPreSSO
Now Climatology (Hydrobase) AVISO altimetry
in Slope Sea SST (AVHRR/MODIS/GOES blended
from PFEL CoastWatch) Soon regional
climatology glider VOS/XBT Argo
Future coastal along-track altimetry in situ
and satellite optics and ocean color gt Glider
observing system design use representers to
analyse information content of MARCOOS glider
tracks
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Forecast skill improvement with assimilation of
CODAR60-day ensemble of all analyses/forecastsu
along-shelf component
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Forecast skill improvement with assimilation of
CODAR60-day ensemble of all analyses/forecastsv
across-shelf component
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The Representer (Bennett) is a measure of the
covariance/correlation between ocean state
variables and a pattern of observationsMethod
integrate the adjoint model backwards forced at
observational locations, then the tangent linear
model forward to carry information to
analysis/forecast times

• Cost function
• Covariance between J and temperature,
• ,
• reflects the influence of glider observation

At time finish of glider mission
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• Cost function
• Covariance between J and temperature,
• ,
• reflects the influence of glider observation

At time 5 days after finish of glider mission