TIGGE Archive Status at NCAR

THORPEX Workshop and 6th GIFS-TIGGE Working Group Meetings

WMO Headquarters

Geneva

22-26 September 2008

Steven Worley

Doug Schuster

TIGGE Archive Status at NCAR

• Update on archive content• Phase 1 completion• TC archive• Advertisement• Metrics

Update on archive content

Changes Since Pretoria– More fields from NCEP prepared by NCDC (now @ 69)

– NCAR installed new servers to receive and send the data

• System now very stable

BOM CMA CMC CPTEC ECMWF JMA KMA MF NCEP UKMO Standard Fields

55 60 56 55 70 61 46 62 69 70

Ensemble Members

33 15 21 15 51 51 17 11 21 24

Forecast Length (D)

10 10 16 15 15 9 10 2.5 16 15

Forecasts per Day

2 2 2 2 2 1 2 1 4 2

Phase I Completion

Get Forecast Data

NCAR online file archive

• Selection options•Center(s)•Date•File type (sl, pl, pt, pv)•Initialization time•Forecast length

Download Options• Point and click download through browser• We prepare a script for user to run on local machine

•User and password encrypted ‘wget’ commands

User customized files

• Selection options•Same as for files, plus•Parameter•Regridding•Spatial subsets•Formats, GRIB2, netCDF

Delayed ModeReal Time

Two User Interfaces

Phase I CompletionNEW Direct Download Option• Simple file and directory structure; 16 days duration• No special discovery interface; find the files you need• Select files, we provide script to run on local machine

•User and password encrypted ‘wget’ commands• Web address, dss.ucar.edu/datasets/ds330.2/data/

TC ArchiveNEW Direct Download Only• Simple directory system, center/year/month• Full period of record (earliest ECMWF 2006-10-01)• Web address, dss.ucar.edu/datasets/ds330.3

z_tigge_c_babj_20080805120000_GEFS_glob_prod_etctr_nwp.xml

CMA: 5 August 2008, 12Z

Update Frequency

• 12 hours

Size

• 6GB

Advertisement

• EOS, Transactions, American Geophysical Union, Vol. 89, Number 36, September 2, 2008 – Title: Improving High-Impact Weather Forecasts– Included an online supplement

• NCAR and CISL home page with Hurricane Gustav animation

• Objective: boost visibility in research community– Did it help?

MetricsNCAR TIGGE Portal (Oct 2007 - Sep 15, 2008)Subset requests

Direct File Download (Nov 2006 - Sep 15, 2008)

Year Vol (GB) % USA #Req %USA #UU % USA

2007 17 89 80 74 18 67

2008 14 93 26 89 10 70

Year Vol (GB) %USA # Files %USA #UU %USA

2006 1.5 100 5 100 2 100

2007 400 79 20136 96 49 39

2008 636 97 28497 98 12 50

MetricsNCAR TIGGE RDA File Download (Includes Specialist Staged Requests)

(Oct 2006 - Sep 7, 2008)

2007: 98% to 1 Japanese user (Specialist Staged Request)2008: 99% to 1 Taiwanese user (Specialist Staged Request)

NCAR MSS Download (NCAR Internal Users, Oct 2006 - Sep 7, 2008)

Year Vol (GB) %USA # Files %USA #UU %USA

2007 442 0 11808 0 4 0

2008 116 .01 12490 .01 8 37

Year Vol (GB) %USA # Files %USA #UU %USA

2007 .25 100 1 100 1 100

2008 338 100 14076 100 4 100

MetricsNCAR TC Direct Download (RDA) (Aug 1, 2008 - Sep 15, 2008)

Total TIGGE Data Downloaded (Oct 2006 - Sep 15, 2008)

Year Vol (GB) %USA # Files %USA #UU %USA

2008 .24 87 137 56 12 58

Year Vol (GB) %USA # Files %USA #UU %USA

2006 1.5 100 5 100 2 100

2007 859 79 32025 61 72 45

2008 1104 98 55226 79 46 54

End

Basic Facts for NCAR TIGGE Archive, 9/’08• 22 forecast cycles/forecast day• 1,641,702 GRIB-2 fields/forecast day• 245 GB/forecast day• 3037 archive files created/forecast day• ~16 forecast days online on web

– 45,592 Files– 3.8 TB– 3037 archive files aged off to MSS/day