def METHOD_NAME(raster, mapset, location, dbase, env):
    """Estimates resolution of reprojected raster.
    :param str raster: name of raster
    :param str mapset: mapset of raster
    :param str location: name of source location
    :param str dbase: path to source database
    :param dict env: target environment
    :return float estimate: estimated resolution of raster in destination
                            environment
    """
    output = gs.read_command(
        "r.proj",
        flags="g",
        input=raster,
        mapset=mapset,
        location=location,
        dbase=dbase,
        env=env,
    ).strip()
    params = gs.parse_key_val(output, vsep=" ")
    output = gs.read_command("g.region", flags="ug", env=env, **params)
    output = gs.parse_key_val(output, val_type=float)
    cell_ns = (output["n"] - output["s"]) / output["rows"]
    cell_ew = (output["e"] - output["w"]) / output["cols"]
    estimate = (cell_ew + cell_ns) / 2.0
    return estimate