r m i b i b s a m p i r o b c for hemistry abstract 2. inter...

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0.700.750.800.850.900.951.001.051.101.151.201.25

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INTER-TECHNIQUE COMPARISON OF INTEGRATED WATER VAPOUR MEASUREMENTS FOR CLIMATE CHANGE ANALYSIS

±

R. Van Malderen (1), H. Brenot (2), E. Pottiaux (3), K. Mies (4), S. Beirle (4), T. Wagner (4), C. Hermans (2), M. De Mazière (2), H. De Backer (1) and C. Bruyninx (3)

(1) Royal Meteorological Institute of Belgium, Brussels, Belgium, (2) Belgian Institute for Space Aeronomy, Brussels, Belgium, (3) Royal Observatory of Belgium, Brussels, Belgium, (4) Max Planck Institute for Chemistry (MPI-C), Mainz, Germany EGU GENERAL ASSEMBLY

22-27 APRIL 2012 – VIENNA, AUSTRIA

REFERENCES AND ACKNOWLEDGEMENTS

ROYAL OBSERVATORY OF BELGIUM

ROYAL METEOROLOGICAL INSTITUTE OF BELGIUM

BELGIAN INSTITUTE FOR SPACE AERONOMY

MAX PLANCK INSTITUTE FOR CHEMISTRY

1. INSTRUMENTS AND DATASETS

2. INTER-TECHNIQUE COMPARISONS

3. CONCLUSIONS AND PERSPECTIVES

ABSTRACT

GLOBAL NAVIGATION SATELLITE SYSTEMS RADIOSONDES CIMEL SUN PHOTOMETERS GOME II / SCIAMACHY / IASI

TS all instrument @

Uccle •

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SOLAR-SLANT IWV COMPARISONS @ BRUSSELS

EXPLOITATION OF THE IWV DATASETS @ BRUSSELS WORLD-WIDE EXPLOITATION OF IWV DATASETS ZTD TO IWV CONVERSION

INSTRUMENT COLOCATION: FOCUS ON BRUSSELS

SOLAR-TERRESTRIAL CENTRE OF EXCELLENCE

INTERNATIONAL GNSS SERVICE NOAA (NATIONAL

OCEANIC AND ATMOSPHERIC

ADMINISTRATION)

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2 Ground-Based Instruments

1 In-Situ Instrument

3 Satellite-Based Instruments

Technique Spatial Coverage Temporal Resolution Time Span Tech. Costs All Weather / All Direction By Product of An Analysis

GNSS ± 350 IGS sites every 5 minutes 1995-now low Yes / Yes Yes

Radiosonde ± 1500 sites on average twice/day 1950s-now low to moderate Yes / Vertical Profile No

CIMEL Sun Photometers ± 300 sites ± 15 min, depending on weather conditions

1993-now moderate clear sky only / solar direction needed

No, but focus on aerosol properties retrieval

GOME(2)/SCIAMACHY Global maximum once/day 1996-now very high only if (almost) cloud free/nadir No

GPS-RS80 GPS-RS9x

GPS-CIMEL GPS-GOME

GPS-CIMEL GPS-RS GPS-GOME(2)/SCIAMACHY

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ZTD

MET STA 1

MET STA N

Psurf, Tsurf, Tm

ZHD & ZWD

IWV

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Q factor

0

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CIMEL RS GOME/SCIAMACHY

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* We dispose of weather data with 10 minutes of time resolution only since 1999.