Source code for openghg.standardise.surface._npl

from datetime import datetime
from pathlib import Path
from typing import Dict, Optional

from openghg.standardise.meta import assign_attributes
from openghg.types import pathType
from openghg.util import clean_string, load_internal_json
from pandas import NaT, read_csv

[docs]def parse_npl( data_filepath: pathType, site: str = "NPL", network: str = "LGHG", inlet: Optional[str] = None, instrument: Optional[str] = None, sampling_period: Optional[str] = None, measurement_type: Optional[str] = None, ) -> Dict: """Reads NPL data files and returns the UUIDS of the Datasources the processed data has been assigned to Args: data_filepath: Path of file to load site: Site name network: Network, defaults to LGHG inlet: Inlet height. Will be inferred if not specified instrument: Instrument name sampling_period: Sampling period measurement_type: Type of measurement taken e.g."flask", "insitu" Returns: list: UUIDs of Datasources data has been assigned to """ from openghg.util import get_site_info, format_inlet, synonyms if sampling_period is None: sampling_period = "NOT_SET" data_filepath = Path(data_filepath) site_upper = site.upper() network_upper = network.upper() attributes_data = load_internal_json(filename="attributes.json") npl_params = attributes_data[site_upper] site_data = get_site_info() site_info = site_data[site_upper][network_upper] # mypy doesn't like NaT or NaNs - look into this def parser(date: str): # type: ignore try: return datetime.strptime(str(date), "%d/%m/%Y %H:%M") except ValueError: return NaT data = read_csv(data_filepath, index_col=0, date_parser=parser) # Drop the NaT/NaNs data = data.loc[data.index.dropna()] # Rename columns rename_dict = {"Cal_CO2_dry": "CO2", "Cal_CH4_dry": "CH4"} data = data.rename(columns=rename_dict) = "time" try: site_inlet_values = site_info["height"] except KeyError: raise ValueError( f"Unable to extract inlet height details for site '{site}'. Please input inlet value." ) inlet = format_inlet(inlet) if inlet is None: inlet = site_inlet_values[0] # Use first entry inlet = format_inlet(inlet) elif inlet not in site_inlet_values: print(f"WARNING: inlet value of '{inlet}' does not match to known inlet values") gas_data = {} for species_column in data.columns: processed_data = data.loc[:, [species_column]].sort_index().to_xarray() # Convert methane to ppb if species_column == "CH4": processed_data[species_column] *= 1000 species = clean_string(species_column) species = synonyms(species, allow_new_species=True) # No averaging applied to raw obs, set variability to 0 to allow get_obs to calculate # when averaging processed_data["{} variability".format(species)] = processed_data[species_column] * 0.0 site_attributes = npl_params["global_attributes"] site_attributes["inlet"] = inlet site_attributes["inlet_height_magl"] = format_inlet(inlet, key_name="inlet_height_magl") site_attributes["instrument"] = npl_params["instrument"] attributes = site_attributes attributes["species"] = species metadata = { "species": species, "sampling_period": str(sampling_period), "site": "NPL", "network": "LGHG", "inlet": inlet, "data_type": "surface", "source_format": "npl", } # TODO - add in better metadata reading gas_data[species] = { "metadata": metadata, "data": processed_data, "attributes": attributes, } gas_data = assign_attributes(data=gas_data, site=site, network=network) return gas_data