Presentation is loading. Please wait.

Presentation is loading. Please wait.

Biogenic Emissions over Europe and VOC Oxidation

Published byKornélia Gáspár Modified over 5 years ago

Similar presentations

Presentation on theme: "Biogenic Emissions over Europe and VOC Oxidation"— Presentation transcript:

1 Biogenic Emissions over Europe and VOC Oxidation
Gabriele Curci With contribution from: Paul Palmer, May Fu, Kelly Chance 3rd GEOS-Chem Users’ Meeting, Harvard University, April

2 Motivation Biogenic emission inventories are very uncertain, e.g. even more than a factor of 5 for isoprene emissions Effect on atmospheric chemistry is significant! Palmer et al. developed the idea of using satellite formaldehyde (HCHO) observations to constrain North American isoprene emissions In this work we focus on Europe 3rd GEOS-Chem meeting 10 April 2019 Gabriele Curci

3 VOC oxidation and HCHO production
WIND CITY FOREST HCHO WIND HCHO VOC NOx NOx HCHO VOC VOC THIS HCHO IS WELL CORRELATED TO ITS PARENT VOC! 3rd GEOS-Chem meeting 10 April 2019 Gabriele Curci

4 GOME HCHO Seasonal Cycle in Europe
Formaldehyde column abundances in phase with vegetation growing season August maximum and winter below detection limit (4x1015 molec cm-2) 3rd GEOS-Chem meeting 10 April 2019 Gabriele Curci

5 GOME HCHO in August on a 0.5°x0.5° grid
GOME HCHO average column 2.4 Enhanced HCHO near urban/industrial areas 2.0 1.5 Moderate HCHO columns near forested areas 1.0 Elevated HCHO offshore of the continent 0.5 [1016 molec cm-2] 3rd GEOS-Chem meeting 10 April 2019 Gabriele Curci

6 GEOS-Chem vs GOME HCHO column
GOME HCHO 2°x2.5° August GEOS-Chem HCHO (v736) August 2000 GEIA [Guenther 95] MEGAN [Guenther 06] GEOS-Chem HCHO columns with MEGAN are <50% than GEIA GC HCHO vs GOME: GEIA: bias -17% and r2 = 0.48 MEGAN: bias -38% and r2 = 0.61 3rd GEOS-Chem meeting 10 April 2019 Gabriele Curci

7 GEOS-Chem vs EMEP ground VOC obs
Routine measurement of VOCs since ’90s twice a week at EMEP background sites August 2000: 4 stations in Germany, 1 CZ, 1 France Result: there is a light advantage in using MEGAN, but data are really limited! MEGAN better MEGAN worse 3rd GEOS-Chem meeting 10 April 2019 Gabriele Curci

8 HCHO Production over Europe in August (1)
On continental scale methanol, methane and acetone provide ~60% of HCHO Isoprene with its short lifetime (<1 h) is expected to drive HCHO variability Monoterpene and AVOC ~10% each, but delayed HCHO production 3rd GEOS-Chem meeting 10 April 2019 Gabriele Curci

9 HCHO Production over Europe in August (2)
GEOS-Chem model calculations for August 2000 ISOPRENE AVOCs Isoprene contributes up to 40% locally to HCHO column AVOC contribute only 5%, but reactive VOC (xylenes, ethene, …) are missing AVOC signal in GOME HCHO was not detectable in China during summer [Fu et al., 2007] 3rd GEOS-Chem meeting 10 April 2019 Gabriele Curci

10 NOx-dependent inversion of HCHO column for Isoprene emissions
Yield of isoprene oxidation product non-linearly depend on ambient NOx [e.g. Barket et al., 2004] (1) GEOS-Chem NO2 column HCHO = S * EISOP + B (2) Divide domain’s grid cells in two categories according to NO2 column content (LOW and HIGH) Use GEOS-Chem to relate HCHO column to isoprene emissions for two NOx categories 3rd GEOS-Chem meeting 10 April 2019 Gabriele Curci

11 GEOS-Chem vs GOME Isoprene emissions
GOME Isoprene Emissions August GEOS-Chem Isoprene Emissions August 2000 GEIA GOME-derived isoprene emissions high in Spain, France, Italy, Eastern and South-Eastern Europe (total C in August 2.3 Tg) GEIA (2.1 Tg): -20% and r2 = 0.31 MEGAN (0.8 Tg): -67% and r2 = 0.47 AVOC emissions are about 1.2 Tg MEGAN 3rd GEOS-Chem meeting 10 April 2019 Gabriele Curci

12 Thanks for your attention!

Download ppt "Biogenic Emissions over Europe and VOC Oxidation"

Similar presentations

Formaldehyde columns from GOME as a proxy for biogenic emissions over Europe Università degli Studi dellAquila – CETEMPS LAquila, ITALY

Formaldehyde columns from GOME as a proxy for biogenic emissions over Europe Università degli Studi dellAquila – CETEMPS LAquila, ITALY
Why study ship NO x emissions? Vinken et al., in prep., 2012 15-30% of global NO x emissions 70% of emissions within 400 km of densely populated coast.

Why study ship NO x emissions? Vinken et al., in prep., % of global NO x emissions 70% of emissions within 400 km of densely populated coast.
Dylan Millet Harvard University with

Dylan Millet Harvard University with
Dec 1996 June 1997 GOME HCHO column data 10 16 molecules cm -2.

Dec 1996 June 1997 GOME HCHO column data molecules cm -2.
QUESTIONS 1.Is hexane more or less reactive with OH than propane? 2.Is pentene or isoprene more reactive with OH?

QUESTIONS 1.Is hexane more or less reactive with OH than propane? 2.Is pentene or isoprene more reactive with OH?
Impact of natural and biogenic emissions on Air Quality

Impact of natural and biogenic emissions on Air Quality
Dylan Millet, Daniel Jacob, and May Fu Harvard University Thomas Kurosu and Kelly Chance Harvard-Smithsonian Astrophysical Observatory Alex Guenther NCAR.

Dylan Millet, Daniel Jacob, and May Fu Harvard University Thomas Kurosu and Kelly Chance Harvard-Smithsonian Astrophysical Observatory Alex Guenther NCAR.
Formaldehyde columns over Europe as a proxy for biogenic emissions Università degli Studi dell’Aquila – CETEMPS L’Aquila, ITALY

Formaldehyde columns over Europe as a proxy for biogenic emissions Università degli Studi dell’Aquila – CETEMPS L’Aquila, ITALY
Constraining global isoprene emissions with GOME formaldehyde column measurements Changsub Shim, Yuhang Wang, Yunsoo Choi Georgia Institute of Technology.

Constraining global isoprene emissions with GOME formaldehyde column measurements Changsub Shim, Yuhang Wang, Yunsoo Choi Georgia Institute of Technology.
Atmospheric chemistry Day 4 Air pollution Regional ozone formation.

Atmospheric chemistry Day 4 Air pollution Regional ozone formation.
Detection of anthropogenic formaldehyde over North America by oversampling of OMI data: Implications for TEMPO Lei Zhu and Daniel J. Jacob.

Detection of anthropogenic formaldehyde over North America by oversampling of OMI data: Implications for TEMPO Lei Zhu and Daniel J. Jacob.
Paul Palmer University of Edinburgh

Paul Palmer University of Edinburgh
Deriving isoprene emissions for the African continent using space-based formaldehyde measurements Eloïse Marais 1, Daniel Jacob.

Deriving isoprene emissions for the African continent using space-based formaldehyde measurements Eloïse Marais 1, Daniel Jacob.
Office of Research and Development National Exposure Research Laboratory | Atmospheric Modeling and Analysis Division| A Tale of Two Models: A Comparison.

Office of Research and Development National Exposure Research Laboratory | Atmospheric Modeling and Analysis Division| A Tale of Two Models: A Comparison.
Mapping isoprene emissions from space Dylan Millet with

Mapping isoprene emissions from space Dylan Millet with
North American Isoprene Emissions Measured from Space Paul Palmer Harvard University ACD seminar series, NCAR, January 14, 2002.

North American Isoprene Emissions Measured from Space Paul Palmer Harvard University ACD seminar series, NCAR, January 14, 2002.
TOP-DOWN CONSTRAINTS ON REGIONAL CARBON FLUXES USING CO 2 :CO CORRELATIONS FROM AIRCRAFT DATA P. Suntharalingam, D. J. Jacob, Q. Li, P. Palmer, J. A. Logan,

TOP-DOWN CONSTRAINTS ON REGIONAL CARBON FLUXES USING CO 2 :CO CORRELATIONS FROM AIRCRAFT DATA P. Suntharalingam, D. J. Jacob, Q. Li, P. Palmer, J. A. Logan,
Formaldehyde from Space: Unexplored regions, New Data, New Challenges. Paul Palmer University of Edinburgh.

Formaldehyde from Space: Unexplored regions, New Data, New Challenges. Paul Palmer University of Edinburgh.
SPACE-BASED HCHO MEASUREMENTS AS CONSTRAINTS ON VOC EMISSIONS IN ASIA Tzung-May Fu, Daniel J. Jacob Harvard University Kelly V. Chance Harvard SAO/CFA.

SPACE-BASED HCHO MEASUREMENTS AS CONSTRAINTS ON VOC EMISSIONS IN ASIA Tzung-May Fu, Daniel J. Jacob Harvard University Kelly V. Chance Harvard SAO/CFA.
NMVOC emissions NMVOC emissions estimated from HCHO GOME-2 satellite data J-F. Muller, J. Stavrakou I. De Smedt, M. Van Roozendael Belgian Institute for.

NMVOC emissions NMVOC emissions estimated from HCHO GOME-2 satellite data J-F. Muller, J. Stavrakou I. De Smedt, M. Van Roozendael Belgian Institute for.

Similar presentations

Ads by Google