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

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

Dec 02, 2022 187 likes •349 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

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SLIDE 1

Validation of TCCON Observations of CO2, CH4, and CO at Sodankyla Using AirCore

Huilin Chen1,2, Bert Kers1, Rigel Kivi3, Pauli Heikkinen3, Juha Hatakka4, Tuomas Laurila4, Colm Sweeney2,5 and Pieter Tans5

  • 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
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SLIDE 2

AirCore measurements!

The! AirCore! with! magnesium! perchlorate! driers!and!shut6off!valves!a9ached!on!each! end,!152!m!long,!7!kg![Karion(et(al.(2010]

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SLIDE 3

Validation of TCCON AirCore vs. Aircraft

Sampling) pla*orm) Samplin g)range) Cost) ($)) Error) in) XCO2) Error)in) XCH4) Regular launch?

Low6 aircraA! 0!–!4! km! 1.5K! 1.0! ppm! 10!ppb!

Yes

High6! aircraA 0!–!12! km! 10K! 0.50! ppm! 6!ppb!

NA

AirCore! 0!–!30! km! 4.2K! 0.10! ppm! 2!ppb!

Yes

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SLIDE 4

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! CO2/CH4/CO/H2O!

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SLIDE 5

Landing!sites!

AirCore campaign September 2013!

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SLIDE 6

AirCore profiles October 2013!

Landing!sites!

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SLIDE 7

AirCore Analysis System!

Picarro Aircore sampling system 14-10-2013 1/8” 1/4” 1/8” 1/8”

QC - NC 1/4” QC - NC 1/4” QC - NC 1/4” QC - NC 1/4” QC - NO 1/4” QC - NC 1/4” QC - NC 1/4” QC - NO 1/4” QC - NC 1/4” QC - NC 1/4”

Cal tank valve

QC - NC 1/4”

glued connection glued connection

drying tube Picarro membranepump Critical

  • rifice

Pressure controller

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SLIDE 8

AirCore Analysis on Picarro!

±)0.1)CO2)ppm) ±)2)CH4)ppb)

Time)(min))

±)8)CO)ppb)

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SLIDE 9

Sodankyla AirCore profiles!

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SLIDE 10

TCCON validations – CO2 (preliminary)!

~!0.1%!normal! ~!0.5!%!polar!vortex!

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SLIDE 11

TCCON validations - CH4 and CO (preliminary)! ~!1%!normal! ~!4%!polar!vortex! ~!5%!normal! ~!20!polar!vortex!

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SLIDE 12

TCCON validations – CO2 (preliminary)!

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SLIDE 13

TCCON validations - CH4 and CO (preliminary)!

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SLIDE 14
  • 1. Regular AirCore profiles measurements in

Sodankyla, Finland (67° North)

  • 2. Polar vortex measurements: ~0.5% for CO2,

~4% for CH4, ~20% for CO

  • 3. Technical improvements
  • automatic valve
  • reducing the pressure drop across dryers
  • weight reductions
  • 4. AirCore campaign scheduled in July 2014

Conclusions and future work!

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SLIDE 15

Thanks!for!your!a9enMon!!