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CARIBIC greenhouse gases and non-methane hydrocarbons Carl - PowerPoint PPT Presentation

Feb 18, 2024 •266 likes •499 views

CARIBIC greenhouse gases and non-methane hydrocarbons Carl Brenninkmeijer, Tanja Schuck, and Angela Baker 10 feet wide, 1.6 ton (0.4378260 % tow) Flight hours: 2,289 h Flight distance: 2,012,595 km CARIBIC destinations and flight trajectories Air

  2. CARIBIC greenhouse gases and non-methane hydrocarbons Carl Brenninkmeijer, Tanja Schuck, and Angela Baker 10 feet wide, 1.6 ton (0.4378260 % tow)

  3. Flight hours: 2,289 h Flight distance: 2,012,595 km CARIBIC destinations and flight trajectories

  4. Air Sample Statistics Based on 3764 samples Pressure altitude 10,999 meter or 36,085 feet

  5. J e t s t r e a m Mauna Loa 5 days africa ITCZ A flight from Frankfurt to Cape Town Red = low altitude Meteo calculations by Peter van Velthoven KNMI

  6. Stratosphere Tropopause About 11 kilometer Air samples taken Troposphere Frankfurt Cape Town

  7. Stratosphere or Troposphere or both ? CARIBIC flight 380 on 7 ‐ 8 March 2012 CARIBIC flight 386 on 25 ‐ 26 April 2012 Caracas Frankfurt Vancouver Frankfurt Applying potential vorticity from the ECMWF Meteorological analyses using ECMWF model or information from GHG analysis (N 2 O) Peter van Velthoven. KNMI, de Bilt, shows that 1138 out of 2628 samples (May 2011) the Netherlands were non ‐ tropospheric (43 %) 45 % > 1.0 PVU 55 % undisturbed free troposphere 45 % > 1.0 PVU 55 % undisturbed free troposphere 38 % > 1.5 PVU 38 % > 1.5 PVU 29 % > 3.0 PVU 29 % > 3.0 PVU 26 % stratosphere 26 % > 3.5 PVU 26 % stratosphere 26 % > 3.5 PVU Balance of 19 % tropopause layer This is for continuous data for all This is for continuous data for all Balance of 19 % tropopause layer flights flights

  8. CARIBIC Air Sample Collection 28 @ 2.5 liter glass flasks since 2005 Additional 88 stainless steel 1 liter flasks since 2010

  9. O above the Tropopause N 2 Using the yardstick of Andreas Zahn

  10. The Indian Summer Monsoon Methane Plume Background: MLO (at 19 0 N) monthly averages for 2008. The gradient is derived from CARIBIC October data Schuck et al. ACP 2010

  11. CARIBIC - ACTM comparison 1850 1850 Africa Africa CH 4 [ppb] CH 4 [ppb] 1800 1800 1850 1850 GRU/SCL GRU/SCL CH 4 [ppb] CH 4 [ppb] 1800 1800 1850 1850 BOG/CCS BOG/CCS CH 4 [ppb] CH 4 [ppb] 1800 1800 1850 1850 China China CH 4 [ppb] CH 4 [ppb] 1800 1800 1850 1850 India India CH 4 [ppb] CH 4 [ppb] 1800 1800 10 20 30 40 50 -20 0 20 40 latitude latitude Tanja Schuck and Kentaro Ishijima

  12. Different Regions in Tropical Asia South East China Western Pacific India South China Sea

  13. Methane Seasonality over Asia

  14. Methane Seasonality over Asia

  15. Monsoon ‐ related ‐ biogenic ‐ methane emissions CH 4 CH 4 CO Ethane

  16. Calculations by Armin Rauthe ‐ Schöch using Flexpart (Andreas Stohl)

  17. • ∆ CH 4 / ∆ CO: emissions • ~31 Tg CH 4 , ~21 Tg “extra” • ∆ CH 4 / ∆ C 2 H 6 : biogenic fraction • Up to 75% biogenic Angela Baker GRL in press

  18. s r a e y e s e h t l l a r e v o t r o p p u s r u o y r o f u o y k n a h t , L R S E ‐ A A O N Acknowledgements go to all CARIBIC partners, please consult www.caribic ‐ atmospheric.com

  20. Front View 2 H & 18 O DOAS SO 2 , BrO, water ‐ ozone isotopes HONO 2x computer OPC CH 4 & CO 2 NO O 2 Hg 3x CPCs, NO 2 aerosol H 2 O impactor CO NOy 3x PTRMS power power CO 2 (OVOCs)

  21. Rear View DDB calibration 88 air samples gases (metal) NO 14 air samples NO 2 pumps (glass) 14 air NOy samples pumps (glass)

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