Dry deposition velocities (open loop)

Produced by

CNRM

Data type

Gridded

Horizontal coverage

Europe (west=25.0° W, east=45.0° E, south=30.0° N, north=70.0° N)

Horizontal resolution

0.1° x 0.1°

Temporal resolution

Hourly

Temporal coverage

2018-2022

Model

SURFEX land surface model

File format

Zarr

Download the data

Time-chunked

https://data.seedsproject.eu/seeds_dv_cnrm_20180101-20221231_surfex_ol_v1/slices.zarr

Geo-chunked

https://data.seedsproject.eu/seeds_dv_cnrm_20180101-20221231_surfex_ol_v1/dices.zarr

How to download the data?

Variables

Click on a variable to see it on the viewer.

Dry deposition velocity of nitric acid

dv_isba_hno3

Dry deposition velocity of peroxynitric acid

dv_isba_hno4

Dry deposition velocity of nitrous acid

dv_isba_hono

Dry deposition velocity of dinitrogen pentoxide

dv_isba_n2o5

Dry deposition velocity of ammonia

dv_isba_nh3

Dry deposition velocity of nitrogen monoxide

dv_isba_no

Dry deposition velocity of nitrogen dioxide

dv_isba_no2

Dry deposition velocity of nitrate

dv_isba_no3

Dry deposition velocity of ozone

dv_isba_o3

Dry deposition velocity of ONIT

dv_isba_onit

Dry deposition velocity of PAN

dv_isba_pan

Dry deposition velocity of sulphur dioxide

dv_isba_so2

Dry deposition velocity of TPAN

dv_isba_tpan

Description

Dry deposition of gases to the land surface is an important sink for reactive trace gases in the troposphere. Understanding dry deposition is of importance for understanding air quality and its impacts on human health and vegetation. SURFEX calculates dry deposition using a software scheme that was recently developed in the SEEDS project (deliverable D3.4). The dry deposition software scheme calculates dry deposition velocities, which can be used as an input to calculate dry deposition fluxes in an air quality model. The dry deposition velocities are provided for ozone, sulphur dioxide, and reactive nitrogen compounds (NOx, ammonia, nitric acid, organic nitrates, and per-nitric acid). All of the dry deposition data are output on an hourly time resolution.

Citation

CNRM. (2024). Dry deposition velocities (open loop) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.10731836

Download instructions

This sample Python code shows how to download this dataset, create subsets of it and save them as NetCDF, using the Xarray library.

import xarray as xr
import fsspec

# Open remote dataset
ds = xr.open_zarr(
  store=fsspec.get_mapper("https://data.seedsproject.eu/seeds_dv_cnrm_20180101-20221231_surfex_ol_v1/slices.zarr")
)

# Subset a time range, save as NetCDF
time_subset = ds.dv_isba_hno3.sel(time=slice('2019-06-01', '2019-07-01'))
time_subset.to_netcdf('./dv_isba_hno3_time_subset.nc')

# Subset a time and geographical range, save as NetCDF
time_geo_subset = ds.dv_isba_hno3.sel(time=slice('2019-06-01', '2019-07-01'), latitude=slice(40, 43), longitude=slice(0,3.5))
time_geo_subset.to_netcdf('./dv_isba_hno3_time_geo_subset.nc')