Dylan Millet, Daniel Jacob, and May Fu Harvard University Thomas Kurosu and Kelly Chance Harvard-Smithsonian Astrophysical Observatory Alex Guenther NCAR.

Slides:

Advertisements

Similar presentations

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

Advertisements

Dylan Millet Harvard University with

Status of LPJ estimates of biosphere fluxes: isoprene emissions, H 2 uptake Colin Prentice Pru Foster Leilei Dong Renato Spahni Rita Wania.

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?

Predicted change in global secondary organic aerosol concentrations in response to future climate, emissions, and land-use change Colette L. Heald NOAA.

Page 1 OMI Science Team Meeting, Helsinki, Finland, 24 – 27 June 2008M. Van Roozendael et al. On the usability of space nadir UV-visible observations for.

Predicted change in global SOA in response to future climate, emissions, and land-use change Colette L. Heald NOAA Climate and Global Change Postdoctoral.

Global BVOC Emission Inventories:

Formaldehyde columns over Europe as a proxy for biogenic emissions Università degli Studi dell’Aquila – CETEMPS L’Aquila, ITALY

Biogenic emissions from tropical ecosystems Michael Barkley & Paul Palmer University of Edinburgh.

Constraining global isoprene emissions with GOME formaldehyde column measurements Changsub Shim, Yuhang Wang, Yunsoo Choi Georgia Institute of Technology.

CONSTRAINTS OF ASIAN VOC SOURCES FROM GOME HCHO OBSERVATIONS Tzung-May Fu, Paul I. Palmer, Dorian S. Abbot, Daniel J. Jacob Atmospheric Chemistry Modeling.

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

Using OMI HCHO observations as a constraint on isoprene emissions over Africa Eloïse Marais 1, Daniel Jacob 1, Jennifer Murphy.

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

Isoprene emissions in Africa inferred from OMI HCHO ACKNOWLEDGEMENTS: This work was funded by the NASA ACMAP program and the South African National Research.

Validation of a Satellite Retrieval of Tropospheric Nitrogen Dioxide Randall Martin Dalhousie University Smithsonian Astrophysical Observatory Daniel Jacob.

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

North American Isoprene Emissions Measured from Space Paul Palmer Harvard University ACD seminar series, NCAR, January 14, 2002.

Satellite Observations of Tropospheric Gases and Aerosols Randall Martin With contributions from: Rongming Hu (Dalhousie University) Chris Sioris, Xiong.

Using Satellite Data to Infer Surface Emissions and Boundary Layer Concentrations of NO x (and SO 2 ) Randall Martin With contributions from: Xiong Liu,

Formaldehyde from Space: Unexplored regions, New Data, New Challenges. Paul Palmer University of Edinburgh.

Biogenic, pryogenic, anthropogenic pryogenic anthropogenic biogenic anthropogenic pryogenic pyrogenic anthropogenic biogenic anthropogenic Thomas Kurosu,

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.

AIR QUALITY STUDIES USING OBSERVATIONS FROM SPACE Daniel J. Jacob and funding from NASA ACMAP, NASA GTCP, EPRI with Easan Drury (now at NERL), Folkert.

Satellite and Aircraft Based Constraints on NO X Emissions Randall Martin Chris Sioris Kelly Chance Tom Ryerson Andy Neuman Ron Cohen UC Berkeley Aaron.

Retrieval and Interpretation of Tropospheric Observations from GOME Randall Martin Daniel Jacob Paul Palmer Sushil Chandra Jerry Ziemke Mian Chin Kelly.

Interannual variability in biogenic emissions driven by dynamic vegetation conditions Daniel Cohan (PI), Adetutu Aghedo, Erin Chavez-Figueroa, and Ben.

Global isoprene sources and chemistry: constraints from atmospheric observations Daniel J. Jacob with Emily Fischer, Fabien Paulot, Lei Zhu, Eloïse Marais,

Regulated large-scale annual shutdown of Amazonian isoprene emissions? New insight provided by satellite observations of formaldehyde (HCHO) and of vegetation.

Anthropogenic emissions of highly reactive VOCs (HRVOCs) inferred from oversampling of OMI formaldehyde (HCHO) columns And its application to Houston-Galveston-Brazoria.

What have I learnt about tropospheric composition using space-based observations? Paul Palmer, University of Leeds

QUESTIONS 1.Is hexane more or less reactive with OH than propane? 2.Is pentene or isoprene more reactive with OH? 3.Using the EKMA diagram (the ozone isopleth.

Satellite Observations of Tropospheric Composition: Current and Future Research Paul Palmer, University of Leeds

SATELLITE OBSERVATIONS OF ATMOSPHERIC CHEMISTRY Daniel J. Jacob.

And funding from NASA ACMAP OMI HCHO columns Jan 2006Jul 2006 Using OMI formaldehyde (HCHO) observations to estimate isoprene emissions over Africa Eloïse.

Dylan Millet Harvard University with D. Jacob (Harvard), D. Blake (UCI), T. Custer and J. Williams (MPI), J. de Gouw, C. Warneke, and J. Holloway (NOAA),

Using OMI HCHO to test biogenic and anthropogenic emission inventories in Africa OMI HCHO EOS Aura STM 1-3 October, 2012 E. A. Marais

How accurately we can infer isoprene emissions from HCHO column measurements made from space depends mainly on the retrieval errors and uncertainties in.

Two New Applications of Satellite Remote Sensing: Timely Updates to Emission Inventories and Constraints on Ozone Production Randall Martin, Dalhousie.

Using CO observations from space to track long-range transport of pollution Daniel J. Jacob with Patrick Kim, Peter Zoogman, Helen Wang and funding from.

MAPPING ISOPRENE EMISSIONS FROM SPACE USING OMI FORMALDEHYDE MEASUREMENTS Dylan B. Millet, Daniel J. Jacob, K. Folkert Boersma, Justin P. Parrella Atmospheric.

Review: Constraining global isoprene emissions with GOME formaldehyde column measurements Shim et al. Luz Teresa Padró Wei-Chun Hsieh Zhijun Zhao.

Land Use Change Impacts on Aerosols International Aerosol Modeling Algorithms Meeting December 10, 2015 Colette L. Heald Jeff Geddes, Sam Silva, Ashley.

Terrestrial emissions of isoprene Paul Palmer Division of Engineering and Applied Sciences, Harvard University

USE OF GEOS-CHEM BY SMITHSONIAN ASTROPHYSICAL OBSERVATORY AND DALHOUSIE UNIVERSITY Randall Martin Mid-July SAO Halifax, Nova Scotia.

Isoprene emissions in Africa inferred from OMI HCHO Eloïse Marais D. Jacob, T. Kurosu, K. Chance, J. Murphy,

Distribution of formaldehyde over North America:

Daniel J. Jacob, Lin Zhang, Dylan B. Millet, Paul I

Top-down constraints on emissions of biogenic trace gases from North America Dylan Millet with D.J. Jacob, R.C. Hudman, S. Turquety, C. Holmes (Harvard)

TOP-DOWN CONSTRAINTS ON EMISSION INVENTORIES OF OZONE PRECURSORS

Harvard-Smithsonian Center for Astrophysics

North American Isoprene Emissions Measured from Space

NMHC emissions derived from GOME HCHO columns

Using satellite observations of HCHO column to better understand natural NMVOC emission processes Paul Palmer, Dorian Abbot, May Fu, Daniel Jacob, Bill.

Randall Martin Aaron Van Donkelaar Daniel Jacob Dorian Abbot

North American Hydrocarbon Emissions Measured from Space

Dylan Millet D.J. Jacob, D.R. Blake, K. Chance, A. Fried,

GOME HCHO JULY 1996 (molec cm-2)

MAPPING OF VOLATILE ORGANIC COMPOUND (VOC) EMISSIONS USING SATELLITE OBSERVATIONS OF FORMALDEHYDE COLUMNS Daniel J. Jacob with Paui I. Palmer, Tzung-May.

Estimation of Emission Sources Using Satellite Data

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

SATELLITE OBSERVATIONS OF OZONE PRECURSORS FROM GOME

Biogenic Emissions over Europe and VOC Oxidation

MEASUREMENT OF TROPOSPHERIC COMPOSITION FROM SPACE IS DIFFICULT!

TOP-DOWN ISOPRENE EMISSION INVENTORY FOR NORTH AMERICA CONSTRUCTED FROM SATELLITE MEASUREMENTS OF FORMALDEHYDE COLUMNS Daniel J. Jacob, Paul I. Palmer,

HO2 O3 NO OH NO2 hv Pyro-convection NOx, RH, CO O3 Visibility

Presentation transcript:

Dylan Millet, Daniel Jacob, and May Fu Harvard University Thomas Kurosu and Kelly Chance Harvard-Smithsonian Astrophysical Observatory Alex Guenther NCAR Colette Heald UC Berkeley OMI HCHO measurements to test isoprene emissions and land cover GEOS-Chem Meeting April 11, 2007

HCHO Columns Map Isoprene Emissions from Space Formaldehyde (HCHO) is a major breakdown product in the oxidation of isoprene  Giving us an isoprene emission proxy that can be measured from space

Relating HCHO Columns to Isoprene Emission VOCs HCHO OH, h k i, Y i OH, h k HCHO Local Ω HCHO -E i Relationship VOC source Distance downwind Ω HCHO Isoprene a-pinene propane 100 km detection limit Palmer et al., JGR (2003,2006) Millet et al., JGR (2006) HCHO vertical columns measured by OMI (Summer 2006)

Relating HCHO Columns to Isoprene Emission What drives variability in column HCHO? Measured HCHO production rate vs. column amount Isoprene dominant source when Ω HCHO is high Ω HCHO variability over N. America driven by isoprene Other VOCs give rise to a relatively stable background Ω HCHO  Not to variability detectable from space INTEX-A Millet et al., JGR (2006).

Measuring HCHO from Space x 320 km footprint global coverage: 3 days GOME 2002-present 30 x 60 km footprint global coverage: 6 days SCIAMACHY 2004-present 13 x 24 km footprint global coverage: 1 day OMI SBUV instruments in low Earth orbit

OMI HCHO Columns over North America

OMI (2006) vs. GOME ( ) OMI: better counting statistics, cloud filtering  less retrieval noise 10-20% lower than GOME (accounting for interannual climate differences) June-August GOMEOMI

Relating HCHO Columns to Isoprene Emissions Uniform Ω HCHO -E isoprene relationship Variable Ω HCHO -E isoprene relationship Ω HCHO = SE isoprene + B [10 15 molecules cm -2 ] [10 13 atomsC cm -2 s -1 ] OMI Isoprene Emission

Model of Emissions of Gases and Aerosols from Nature G2006 Guenther [2006] (MODIS) CLM Community Land Model (AVHRR) [10 13 atomsC cm -2 s -1 ] Environmental drivers (T, h, LAI, leaf age, …) Vegetation-specific baseline emission factors Drive MEGAN with 2 land cover databases MEGAN Isoprene Emissions w/ G2006 vegetation MEGAN Isoprene Emissions w/ CLM vegetation Guenther et al., ACP (2006) 12.2 TgC Broadleaf trees

Spatial Patterns in Isoprene Emissions OMI – MEGAN Isoprene Emissions June-August, 2006 Large sensitivity to surface database used MEGAN higher than OMI over dominant emission regions MEGAN OMI – MEGAN Isoprene Emissions June-August, 2006 MEGAN with CLM vegetationMEGAN with G2006 vegetation OMI

G2006 Broadleaf Trees MEGAN w/ CLM Land Cover MEGAN w/ G2006 Land Cover OMI – MEGAN Isoprene Emissions June-August, 2006 Bottom-Up Emissions Too High in Dominant Source Regions MEGAN emissions >70% too high over much of the Ozark Plateau, Upper South, Upper Midwest Large regional emissions driven by oak tree cover, high temperatures Broadleaf tree isoprene emissions overestimated

OMI – MEGAN Isoprene Emissions June-August, 2006 CLM-Driven Emissions Too Low in Deep South Bias in modeled emissions: >100% Underestimate of broadleaf tree or shrub coverage -or- Modeled emissions from evergreen trees or crops too low CLM Fineleaf Evergreens CLM Crops [10 13 atomsC cm -2 s -1 ]

Constraints on Emission Factors Possible explanation for OMI-MEGAN discrepancy: Fast chemical loss within forest canopies? Farmer and Cohen [2007] Regress OMI isoprene emissions against G2006 PFTs Variable EFs Broadleaf tree emissions need to be uniformly decreased by 44% Constant EFs More consistent with OMI Optimum broadleaf tree EF: 13.1 x atomsC/cm 2 /s similar to MEGAN mean rejects MEGAN’s use of 3-4x higher EFs in certain locations

The End

OMI vs. Aircraft Data & GEOS-Chem

MEGAN isoprene emissions using 2 land cover databases Guenther [2006] (MODIS) – G2006 Community Land Model (AVHRR) - CLM G2006 CLMEF [%] [10 10 atomsC/cm 2 /s] [10 13 atomsC cm -2 s -1 ] PFT Coverage and Isoprene Emission Factors (EFs) Isoprene Emission

OMI Isoprene Emission vs. MEGAN-CLM Uniform Ω HCHO -E isoprene relationship Variable Ω HCHO -E isoprene relationship OMI - MEGAN MEGAN w/ CLM vegetation [10 13 atomsC cm -2 s -1 ] OMI isoprene emission (uniform slope) OMI isoprene emission (variable slope)

OMI Isoprene Emission vs. MEGAN-G2006 Uniform Ω HCHO -E isoprene relationship Variable Ω HCHO -E isoprene relationship OMI - MEGAN MEGAN w/ G2006 vegetation [10 13 atomsC cm -2 s -1 ] OMI isoprene emission (uniform slope) OMI isoprene emission (variable slope)