Chris A. MattmannSenior Computer ScientistJet Propulsion Laboratory

D. Waliser (JPL)C. Goodale (JPL)

J. Kim (UCLA/JIFRESSE

Many others

ADSIMNOR-CORDEX workshop on Arctic climate modeling results and needs, March 20-21, 2012

Using Satellite & Other Observations For Regional Model Evaluation

We started with MySQL…and then broke it at 6B data points…and then federated it, and broke it

again

Then we experimented with Hadoop/HIVE

Query times scaledwith the amount of nodes weadded

Currently evaluating

The RCMED API:- Search the entire database

- Space/Time box- Simple RESTful URL- Simple ASCII result format

• Use web service from RCMED

• Regrid onto obs or model grid

• Seasonal, monthly or annual temporal compositing

• Perform metric (bias, RMSE, etc.)

• Output plot using NCAR NCL

• Bottle Python web services• PHP Wizard Front End

• Config ACentralized RCMEDVM-based RCMET

• Config BCentralized RCMET and RCMED

ftp://ftp.cccma.ec.gc.ca/pub/yjiao/CanRCM4/

Worked with Melanie Cookie/Paul Kushner

Compared Near-Surface Air Temperature with ERA 2 Metre Temp

Selected time range:  2008/01/01 00:00 2008/02/01 00:00•Use Model grid•Calculate time mean for full period.•Bias: mean bias across full time range

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Thank you!

Contact information:Chris A. Mattmann – ITchris.a.mattmann@nasa.gov

Duane Waliser – Scienceduane.waliser@jpl.nasa.gov

Jinwon Kim – Sciencejinwon.kim@jpl.nasa.gov