GPS Comparisons

11
IHOP_2002 Water Vapor Intercomparison Workshop GPS Comparisons John J. Braun COSMIC Program University Corporation for Atmospheric Research Boulder, Colorado

description

GPS Comparisons. John J. Braun COSMIC Program University Corporation for Atmospheric Research Boulder, Colorado. Outline. Comparisons to Water Vapor Radiometer ARM radiometrics instruments Comparisons to Year 2001 Comparison of GPS Processing Packages. NOAA/FSL and DOT Stations. - PowerPoint PPT Presentation

Transcript of GPS Comparisons

Page 1: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

GPS Comparisons

John J. BraunCOSMIC Program

University Corporation for Atmospheric Research

Boulder, Colorado

Page 2: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

Outline

•Comparisons to Water Vapor Radiometer

•ARM radiometrics instruments

•Comparisons to Year 2001

•Comparison of GPS Processing Packages

Page 3: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

GPS Stations In IHOP_02 Region

NOAA/FSL and DOT Stations

OU/ARM/SuomiNet Stations

Special Stations for IHOP

41 Stations Total

HBRK

VCIO

PRCO

HKLO

LMNO

Page 4: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

ARM Central Facility - Lamont, OK (LMNO)

Page 5: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

ARM Central Facility - SuomiNet Station

Page 6: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

Station Hillsboro, KS (HBRK)

Page 7: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

Station Haskell, OK (HKLO)

Page 8: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

Station Purcell, OK (PRCO)

Page 9: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

Station Vici, OK (VCIO)

Page 10: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

IHOP Results Compared to YR 2001 Results

Station RMS IHOP RMS BIAS IHOP BIAS

HBRK 1.5 mm 1.5 mm -0.9 mm -0.6 mm

HKLO N/A 1.2 N/A 0.3

LMNO 1.5 1.3 -0.9 -1.1

PRCO 1.6 1.3 -1.9 -1.4

SG01 N/A 1.2 N/A -0.9

VCIO 1.3 1.5 -1.6 -0.2

Page 11: GPS Comparisons

IHOP_2002 Water Vapor Intercomparison Workshop

Conclusions

•GPS - WVR Comparisons have been made

•Only comparing PW results.

•There have been no quantitative comparisons of SW and tomography

•GPS tends to be dry with respect to WVR.

•GPS solutions between processing packages have not been completed yet for IHOP 2002, but previous comparisons show very good agreement.