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NWS Calibration Workshop, LMRFC March, 2009 1
Historical Data Access
Basic Calibration Workshop
March 10-13, 2009
LMRFC
NWS Calibration Workshop, LMRFC March, 2009 2
Historical Data AnalysisGeneral Information Needed
Analysis of PrecipitationInformation needed
Non Mountainous Mountains
PXPP
1 check consistency2 compute monthy means
MAP
1 recheck consistency2 generate time series of MAP
MAT
TAPLOT
MAT
MAPE
1. Station data2. Station history info: obs times, changes, location, moves3. Topographic data
1 isohyetal map2 station weights-basin boundary
Mountains
- check consistency
- get mean max/min for mean zone elev.
- generate time series of MAT.
- area vs elev. curve-basin boundary
1 evaporation maps2 station weights3 mean monthly evap.
1 check consistency2 generate daily time series of MAPE
- evap. vs elev. curve
Non Mountainous Non Mountainous Mountains
-compute 12monthy ETdemand values
Analysis of TemperatureInformation needed
Analysis of EvaporationInformation needed
MAPX1. ‘Poor man’s” reanalysis
NWS Calibration Workshop, LMRFC March, 2009 3
Sources of Data for Calibration• National Climatic Data Center (NCDC)
– Hourly precipitation (thru Feb, 2008 for legacy programs, 2005 for Browser)– Daily precipitation (through May, 2008 for legacy programs, 2005 for Browser)– Max, min temperature– Snow on Ground – Synoptic Data– Evaporation data.
• U.S. Geological Survey (USGS)– Mean daily flow– Peak flow– Lake elevation– Pool elevation– Storage– Measurements (note: recently removed due to concerns)
– Hourly Discharge (provisional) http://ida.water.usgs.gov/ida/
NWS Calibration Workshop, LMRFC March, 2009 4
Sources of Data for Calibration, cont’d
• RFC Archives from NOAA Hydrologic Data System– NEXRAD– OFS Processed Data Base (PRD)– Point data and other Postgres data
• RFC Archived Data Base• Natural Resources Conservation Service
(NRCS)– Snotel data
• IFLOWS (higher elevation data)
NWS Calibration Workshop, LMRFC March, 2009 5
Accessing Data for Calibration
• Legacy programs on NHDS web site– Station Inventory– Daily Transfer– Hourly Transfer– Syntran (evaporation data)
• Historical Data Browser (HDB)– GUI replacement of legacy programs
NWS Calibration Workshop, LMRFC March, 2009 6
Meta Data(station inventory,history, on flat file,
2008)
OHD RFC
Data on NOAA1 Server (2008)
Meta Data(station inventory, history)
on Postgres ‘OB9_Histdata’, to1999, soon to be updated
Web AccessLegacy programs(stand alone)
Historical Data Browser(AWIPS)
FTP
Historical Data Access for CalibrationData Flow: Current System
NWS Calibration Workshop, LMRFC March, 2009 7
Accessing Data for Calibration
• In future we hope to have:– Updated Calibration System within CHPS
• Incorporate – CAP– ICP– OPT3– HDB– GIS
– Access to NCDC and USGS directly
NWS Calibration Workshop, LMRFC March, 2009 8
Station History Information
• No source is complete
• New on-line resource: scanned versions of all NCDC B-44 forms reporting station information– Contact [email protected] at NCDC– www.noaa.imcwv.com
• metadata– cooperative station history forms– Document Coop Station Id Number ‘094648’
NWS Calibration Workshop, LMRFC March, 2009 9
NWS Calibration Workshop, LMRFC March, 2009 10
NWS Calibration Workshop, LMRFC March, 2009 11
RFC Data
• A recent request for old NWSRFS data triggered an effort to retrieve all archived NWSRFS data for the period from 1996-Sept 2005. The data has been extracted from tape and placed on an OHD server. An inventory of NWSRFS files was then created on a RFC-by-RFC basis and can be found at: http://amazon.nws.noaa.gov/hdsb/data/nwsrfs/nwsrfs.html.
• If you would like to request any old NWSRFS data, please email your request to [email protected].
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