Dataset
Top‐down isoprene emissions over tropical South America inferred from SCIAMACHY and OMI formaldehyde columns: High-Resolution Chemistry Model Simulations and Analysis
Abstract
The Quantifying the Amazon Isoprene Budget: Reconciling Top-down versus Bottom-up Emission Estimates project produced a unique high resolution model (GEOS-Chem version v8-03-01 - with modifications) for the Amazon, which simulated isoprene emissions and atmospheric chemistry.
Formaldehyde (HCHO) vertical column measurements from the Scanning
Imaging Absorption spectrometer for Atmospheric Cartography (SCIAMACHY) and
Ozone Monitoring Instrument (OMI), and a nested-grid version of the GEOS-Chem
chemistry transport model, are used to infer an ensemble of top-down isoprene emission estimates
from tropical South America during 2006, using different model configurations and
assumptions in the HCHO air-mass factor (AMF) calculation. Scenes affected by biomass
burning are removed on a daily basis using fire count observations, and the local
model sensitivity was used to identify locations where the impact of spatial smearing is small,
though this comprises spatial coverage over the region
Results of this project are presented in the following publication:
Barkley, M. P., et al. (2013), Top-down isoprene emissions over tropical South America inferred from SCIAMACHY and OMI formaldehyde columns, J. Geophys. Res. Atmos., 118, 6849–6868, doi:10.1002/jgrd.5055
and model outputs associated to this project are archived at CEDA.
This was a NERC funded project.
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
Use of these data is covered by the following licence: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
Data provided as is by M. Barkley in March 2015. |
| File Format: |
Typically GEOS-Chem binary-punch outputs *.bpch.
Other files are straight binary ending in *.bin.
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Process overview
| Title | Quantifying the Amazon Isoprene Budget: GEOS-Chem Chemistry Transport Model |
| Abstract | GEOS-Chem Chemistry Transport Model. The nest-grid has a horizontal resolution of 0.667° × 0.5° (longitude × latitude), and 47 vertical levels extending from the surface to 0.01 hPa. The model is driven using GEOS-5 meteorology, which is updated every 3–6 hours. Tracer mixing ratios from an off-line global 4° × 5° simulation provide 3-hourly boundary conditions to the grid-edges. Based on a previous model evaluation [Barkley et al., 2011], we use an updated chemical mechanism to simulate O3-NOx-VOC-aerosol photochemistry. |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
- long_name: Isoprene
- names: Isoprene
Co-ordinate Variables
Temporal Range
2006-01-01T00:00:00
2006-12-31T00:00:00
Geographic Extent
14.0000° |
||
-85.0000° |
-30.0000° |
|
-25.0000° |