1. Chris A. Mattmann Senior Computer Scientist Jet 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

2. Using Satellite & Other Observations For Regional Model Evaluation

4. We are building the Regional Climate Model Evaluation System (RCMES) RCMED and RCMET Caveats Certain parts of this tool are still in development Portions of the tool are difficult to install Things I hate love: NCL, PyNIO, PyNGL, matplotlib, scipy, numpy Good news We’re trying to make the tool easier to install – you’ll hear about this today We are building the tool as an open source system – if you want to contribute, you can!

7. 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 scaled with the amount of nodes we added Currently evaluating

8. The RCMED API: - Search the entire database - Space/Time box - Simple RESTful URL - Simple ASCII result format

9. 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

11. Config A Centralized RCMED VM-based RCMET Config B Centralized RCMET and RCMED

12. 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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35. Thank you! Contact information: Chris A. Mattmann – IT chris.a.mattmann@nasa.gov Duane Waliser – Science duane.waliser@jpl.nasa.gov Jinwon Kim – Science jinwon.kim@jpl.nasa.gov