1 OHD-CBRFC Meetings with Hydro Group April 29, 2010.

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Presentation transcript:

1 OHD-CBRFC Meetings with Hydro Group April 29, 2010

2 Proposed Agenda Hydro group projects Lunch ET related projects and discussion

3 Hydrologic Modeling Group Mike Smith Victor Koren Ziya Zhang Zhengtao Cui Naoki Mizukami Brian Cosgrove Eric Anderson (1/4)

4 Hydro Group Projects Deliverables to RFCs DMIP 2 (Oklahoma, Sierra Nevada) –Confidence in model; calibration schemes; procedure for gridded hourly historical QPE; new ET for SAC-SMA HMT West – evaluation of new data SAC-HT with new ET –New model and parameter grids Parameterization –Snow-17 (CONUS mfmax, mfmin grids) –SAC-SMA (CONUS, Alaska STATSGO, SSURGO with climate adjustment and new ZPERC) DHM-TF implementation : with CBRFC; Pittsburgh, Binghamton; visualization tools; CONUS a priori routing parameters Migrate HL-RDHM into CHPS –Supported operational distributed model

5 Hydro Group Projects Deliverables to RFCs NASA Goddard: assimilation of MODIS snow covered area into Snow-17 NASA Marshall: use of ASOS/MODIS cloud ‘mask’ data for daily PE computation –Daily PE approach using SYNTRAN NASA: SMAP NCEP/EMC 30-year Reanalysis using SAC-HT and Snow-17: CONUS water resources products such as soil moisture climatology

6 U. Hawaii: Comparison of models for flash flood forecasting in tropics. U. New Mexico: Linkage of hydro and met models for improved forecasting UCLA: SNOTEL data characteristics to improve SNODAS (improved SWE) U. Washington: ‘Unified Model’ Hydro Group Projects Deliverables to RFCs

7 DMIP 2 Participants Oklahoma Experiments U. Arizona CEMAGREF DHI EMC U. Illinois U. Neb OHD U. Alberta Vrije U. Brussels U. Ok Wuhan U., China U. Ca. Irvine Imperial College of London

8 Parent Basins DMIP 2 Oklahoma Basins: Modified Corr. Coeff. for all models, all basins. OHD Lumped

9 NCDC Hourly Daily NWSRFS Precipitation Preprocessor (PXPP) -Data QC: double mass, suspect values -Generate monthly station means NWSRFS Mean Areal Precip. Processor (MAP) - Check data consistency -Estimate missing hourly, daily data -Disaggregate all station data to hourly values -Non disaggregated daily obs put into one hour -Print out hourly time series (new enhancement) Multi-Sensor Precip. Estimator (MPE) -Uses PRISM values in interpolation -Generate gauge-only gridded QPE -Manual QC: Fix ‘non-distributed’ daily precipitation values -Script to uniformly distribute remaining Daily values Hourly Point Time Series -42 Total for North Fork test -Select Optimal Procedure for OHD Gauge-Only Gridded QPE for DMIP-2 (Developed by Hydro and Hydromet Groups) SNOTEL Daily Use existing NWSRFS programs to generate hourly precipitation time series at each NCDC station; input these to MPE

10 Gridded Historical QPE Uses existing data QC methods Uses existing RFC MAP input files –No changes needed! New MAP and scripts available from AWIPS LAD Gridded historical temperature may follow same path

11 Precipitation Data QC for DMIP 2 Missing flags Wrong flags Non-disaggregated daily totals Values on incorrect days

12 Wrongly coded as -999 In data file: should be -998 Foresthill changed from zero to -998 to agree with Georgetown

13 Max Value mm 00Z 1/22/2000 = Snotel D H = Daily = Hourly Non-distributed daily value At Lake Spaulding Station

14 Jan 22, 2000 Corrected mm in one hour at Lake Spaulding. Corrected Foresthill: changed zero to -998 Jan 18 to agree with Georgetown. Corrected Georgetown data to agree with NCDC paper records (-998 not -999 on Jan 15-17) Observed Schaake old Schaake New OHD no data QC OHD Data QC

15 DMIP 2 Western Basin Experiments NCEP/EMC: J. Dong HRC: K. Georgakakos U. Washington: J. Lundquist with DHSVM CEMAGREF: V. Andreassian UCI: Sorooshian U. Illinois: Sivapalan U. Bologna: E. Todini

16 HMT experiments data Freezing level, precipitation type Value of ‘gap’ filling radar QPE. “DMIP 2” Western Basin Experiments

Step 1: ‘Basic’ DMIP 2 Data: Time series of gridded precipitation and temperature from NCDC, Snotel sites to Dec. 2002; Step 2: Extend ‘Basic’ Data: gridded precip. and temp. from NCDC, Snotel sites HMT-West Observations Gathered Analysis of Data ESRL, NSSL, OHD Gridded Precipitation for each IOP replaces Basic Data 12 3 Step 3 ‘Advanced’ DMIP 2 Data: Multi-year time series of gridded data comprised of 1) ‘Basic’ data and 2) Processed and gridded HMT data for each IOP Year Note: the time scale describes the attributes of the time series, not the schedule for processing the HMT data. The HMT observations will be processed after each campaign and inserted into the Basic Data time series. HMT QPE Data Processing for Use in DMIP 2 -Represent what the RFC uses for current Forecast operations. -Used for the initial lumped and distributed DMIP 2 simulations in the western basins.