Include non observables into an aeroval experiment

Synopsis

There’s model data that one would like to visualise for what no observational data is available. In this case pyaerocom can be used to inter compare several models with each other by analysing just the model data:

1. at station locations given by an observational network

2. using one model as comparison and doing the inter comparison grid cell by grid cell

example for #1	example for #2
aeroval link	aeroval link

Creating so-called proxy data at station locations (#1) needs adjustment of pyaerocom unless the variables have been defined already. A list of supported variables and observational networks can be found at the end of this page.

Another way of showing non-observable data in an aeroval experiment is therefore using some sort of model data for comparison. As long as the data can be read by pyaerocom, it can be used as proxy data for non-observable variables.

aeroval configuration

In the case #1 above the configuration will only use the name of the proxyvariable:

OBS_GROUNDBASED = {
    #    EBAS
    "EBAS-m": dict(
        obs_id="EBASMC",
        web_interface_name="EBAS-m",
        obs_type="ungridded",
        ts_type="monthly",
        obs_vars=["proxydrypm10",],
        obs_vert_type="Surface",
    ),
}

In the case #2 above (model data as observations) the same part of the aeroval config file looks like this:

OBS_GROUNDBASED = {
    "LIVASV4-dep": dict(
            # model names it would be used for a different comparison
            obs_id="LIVAS_V4.domos",
            # variables to use
            obs_vars=["drydust", ],
            obs_vert_type="Surface",
            web_interface_name="LIVASV4",
            # regrid model data to 2 degree resolution
            # always the same latitudenal and longitudenal resolution at the moment
            regrid_res_deg=2,
        ),
    }

WARNING As of the beginning of the year 2025 the model data used needs to be interpolated to at least 2 degree (for non-global coverage) or 5 degrees (global coverage). Using a higher resolution will end in too many “stations” for the web interface to handle and will take very long to compute.

supported variables at obs network locations:

variable	obsnetwork(s) that provide them
proxydryhno3	EBAS
proxydryhono	EBAS
proxydryn2o5	EBAS
proxydryna	EBAS
proxydrynh3	EBAS
proxydrynh4	EBAS
proxydryno2	EBAS
proxydryno2no2	EBAS
proxydryno3c	EBAS
proxydryno3f	EBAS
proxydryo3	EBAS
proxydryoxn	EBAS
proxydryoxs	EBAS
proxydrypm10	EBAS
proxydrypm25	EBAS
proxydryrdn	EBAS
proxydryso2	EBAS
proxydryso4	EBAS
proxydryss	EBAS
proxyod550aerh2o	Aeronet
proxyod550bc	Aeronet
proxyod550dust	Aeronet
proxyod550nh4	Aeronet
proxyod550no3	Aeronet
proxyod550oa	Aeronet
proxyod550so4	Aeronet
proxyod550ss	Aeronet
proxywethno3	EBAS
proxywethono	EBAS
proxywetn2o5	EBAS
proxywetnh3	EBAS
proxywetnh4	EBAS
proxywetno2	EBAS
proxywetno2no2	EBAS
proxywetno3c	EBAS
proxywetno3f	EBAS
proxyweto3	EBAS
proxywetoxn	EBAS
proxywetoxs	EBAS
proxywetpm10	EBAS
proxywetpm25	EBAS
proxywetrdn	EBAS
proxywetso2	EBAS
proxywetso4	EBAS
proxyzaerosol	Aeronet
proxyzdust	Aeronet