Data used in manuscript Direct CO2 emissions and uptake at neighbourhood scale over the urban area of Beijing

This dataset provides the data used in the manuscript "Direct CO2 emissions and uptake at neighbourhood scale over the urban area of Beijing".

The folders are:

1. Modelled_CO2_Flux  This folder contains a portion of modelled CO2 fluxes generated by SUEWS. Fc is the net CO2 flux, FcPhoto the CO2 uptake by vegetation, FcRespi the CO2 release from soil and vegetation respiration, FcMetab the CO2 emissions from human metabolism, FcBuild the CO2 emissions from the local fuel combustion in buildings. Longitudes and latitudes denote the centroid of grid.    1.1 Fc_annual_2016_g_C_m-2_yr-1.nc is the annual CO2 fluxes in g C m-2 year-1.    1.2 Fc_monthly_2016_g_C_m-2_mon-1.nc is the monthly CO2 fluxes in g C m-2 month-1.    1.3 Fc_annual_2016_g_C_m-2_yr-1.tiff is the annual Fc (g C m-2 year-1) provided in GeoTiff format.    1.4 6_ring_EPSG4326 contains the ESRI Shapefile defining the study area (with the 6th Ring Road in Beijing as the boundary).

2. ModelRun  This folder includes SUEWS source code (Järvi et al., 2011; Ward et al., 2016; Järvi et al., 2019) and a model run sample.    2.1 SUEWS_SourceCode is a folder including SUEWS V2020b source Fortran codes. For detailed descriptions, readers are referred to SUEWS webpage (https://suews.readthedocs.io/en/latest/). Enter "make" through the command line and a SUEWS executive will be built under ".../ModelRun/Release".    2.2 EvaluationRun is a folder including the SUEWS run for model performance evaluation. To conduct a quick model run to reproduce the results demonstrated in the manuscript, use command line "./SUEWS_V2020b". 

3. Observations  The unit for CO2 flux (Fc) is μmol m-2 s-1 under this folder.    3.1 co2_flux_140m_2016_rm_QC.csv is the Fc observations after quality control and resampled to hourly resolution.    3.2 Fc_gapfilled_with_MeanDC.csv is the Fc time series for the year 2016 gap-filled with the Mean Diurnal Cycle method on a seasonal basis.

Contact information: [e-mail]

[References]Järvi, L., Grimmond, C. S. B., & Christen, A. (2011). The surface urban energy and water balance scheme (SUEWS): Evaluation in Los Angeles and Vancouver. Journal of Hydrology, 411(3-4), 219-237.Ward, H. C., Kotthaus, S., Järvi, L., & Grimmond, C. S. B. (2016). Surface Urban Energy and Water Balance Scheme (SUEWS): development and evaluation at two UK sites. Urban Climate, 18, 1-32.Järvi, L., Havu, M., Ward, H. C., Bellucco, V., McFadden, J. P., Toivonen, T., ... & Grimmond, C. S. B. (2019). Spatial modeling of local‐scale biogenic and anthropogenic carbon dioxide emissions in Helsinki. Journal of Geophysical Research: Atmospheres, 124(15), 8363-8384.