Validation of TCCON Observations of CO 2 , CH 4 , and CO at Sodankyla - PowerPoint PPT Presentation

Dec 02, 2022 •187 likes •346 views

Validation of TCCON Observations of CO 2 , CH 4 , and CO at Sodankyla Using AirCore Huilin Chen 1,2 , Bert Kers 1 , Rigel Kivi 3 , Pauli Heikkinen 3 , Juha Hatakka 4 , Tuomas Laurila 4 , Colm Sweeney 2,5 and Pieter Tans 5 1. CIO, University of

Validation of TCCON Observations of CO 2 , CH 4 , and CO at Sodankyla Using AirCore Huilin Chen 1,2 , Bert Kers 1 , Rigel Kivi 3 , Pauli Heikkinen 3 , Juha Hatakka 4 , Tuomas Laurila 4 , Colm Sweeney 2,5 and Pieter Tans 5 1. CIO, University of Groningen, The Netherlands 2. CIRES, University of Colorado, Boulder, USA 3. FMI, Arctic Research Centre, Sodankyla�, Finland 4. FMI, Helsinki, Finland 5. NOAA ESRL, Boulder, Colorado, USA
AirCore measurements ! The! AirCore! with! magnesium! perchlorate! driers!and!shut6off!valves!a9ached!on!each! end,!152!m!long,!7!kg! [Karion(et(al.(2010]
Validation of TCCON AirCore vs. Aircraft Error) Sampling) Samplin Cost) Error)in) Regular in) pla*orm) g)range) ($)) XCH 4 ) launch? XCO 2) Low6 0!–!4! 1.0! km! 1.5K! ppm! 10!ppb! Yes aircraA! High6! 0!–!12! 0.50! km! 10K! ppm! 6!ppb! NA aircraA 0!–!30! 0.10! AirCore! km! 4.2K! ppm! 2!ppb! Yes
AirCore measurements over Sodankyla ! TCCON!staMon! LocaMon!67°!North! AirCore:!40!m!1/4”!+!60!m!1/8”!! Coils:!! ! !!!!!!!2.8!kg!! Total!package:!!3.6!kg!! Analysis:!! ! ! ! ! !Picarro! CO 2 /CH 4 /CO/H 2 O!
AirCore campaign September 2013 ! Landing!sites!
AirCore profiles October 2013 ! Landing!sites!
AirCore Analysis System ! Aircore sampling system 14-10-2013 QC - NC 1/4” QC - NC 1/4” 1/8” Picarro membranepump Pressure controller Critical orifice 1/8” QC - NC 1/4” QC - NC 1/4” 1/4” QC - NO Picarro QC - NC 1/4” QC - NC 1/4” valve glued connection QC - NO 1/4” drying tube QC - NC 1/4” QC - NC 1/4” glued connection QC - NC 1/4” Cal tank 1/4” 1/8”
AirCore Analysis on Picarro ! ±)0.1)CO 2 )ppm) ±)2)CH 4 )ppb) ±)8)CO)ppb) Time)(min))
Sodankyla AirCore profiles !
TCCON validations – CO 2 (preliminary) ! ~!0.1%!normal! ~!0.5!%!polar!vortex!
TCCON validations - CH 4 and CO (preliminary) ! ~!5%!normal! ~!1%!normal! ~!20!polar!vortex! ~!4%!polar!vortex!
TCCON validations – CO 2 (preliminary) !
TCCON validations - CH 4 and CO (preliminary) !
Conclusions and future work ! 1. Regular AirCore profiles measurements in Sodankyla, Finland (67° North) 2. Polar vortex measurements: ~0.5% for CO 2 , ~4% for CH 4 , ~20% for CO 3. Technical improvements • automatic valve • reducing the pressure drop across dryers • weight reductions 4. AirCore campaign scheduled in July 2014
Thanks!for!your!a9enMon!!

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