ankie piters, marc allaart, wesley sluis, wytze lenstra, knmi royal netherlands meteorological...
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Ankie Piters, Marc Allaart, Wesley Sluis, Wytze Lenstra, KNMI
Royal Netherlands Meteorological InstituteMinistry of Infrastructure and Environment
An update on the NO2 sonde
ESA’s Innovation Triangle Innitiative
“Programme to foster the introduction of breakthrough innovations and technologies for space applications. “
Purpose is to make the NO2 sonde ready for serial production:
- improve the calibration procedure
- improve the design
- transfer the knowledge to industry
Cooperation with GRAW radiosondes to produce the sonde
Duration of this project: 15 months
External reviewer/advisor: Michel Van Roozendael, BIRA
Aim: user evaluation model end 2013, GRAW product end 2015
What happened after CINDI?
winterDe Bilt, the Netherlands
November 2010 –February 2011
9 flights
DISCOVER-AQBaltimore /
Washington, USAJuly 2011 8 flights
PEGASOSCabauw, the Netherlands
May 20127 flights +
7 ground sondes
DISCOVER-AQ campaign 2011, USA
aircraft and tethered balloon measurements
NO2 sondeCRDS
profile measured during aircraft descend, 20 July
thanks to: Russ Dickerson (UMD) and Richard Clark (Millersville Univ)
PEGASOS campaign May 2012, Netherlands
Weather balloon
Marc and Ankie with 2 sondes
Zeppelin
2 MAX-DOAS-ses
NOx analyser
~500 m distance side-by-side measurement
RIVM NOx analyserNO2 sonde1 min. average of NO2 sonde
data: Lou Gast, RIVM
On-ground comparisons with NOx analyser (BLC)
bottle #2bottle #1 #3
Sensitivity of luminol increases with time
Next stepsWhat determines/affects sensitivity?
Optimise design
Optimise calibration procedure
Transfer knowledge to GRAW radiosondes
And also:
Analyse DISCOVER-AQ and PEGASOS data
Demonstrate the use for:
Model evaluation
MAX-DOAS interpretation
Satellite validation