{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:37.822175", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2022-Jul-18_to_2022-Jul-21_145.0_-38.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2022070000793}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "July 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 21 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 56368.02088720306}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -38.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 145.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "145.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 144.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 148.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -38.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -36.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[143.97, -38.03], [143.75, -37.5], [143.97, -36.97], [144.5, -36.75], [144.75, -36.85], [144.82, -36.82], [144.97, -36.47], [145.5, -36.25], [146.03, -36.47], [146.18, -36.82], [146.25, -36.85], [146.32, -36.82], [146.35, -36.75], [146.25, -36.5], [146.47, -35.97], [147.0, -35.75], [147.25, -35.85], [147.5, -35.75], [148.03, -35.97], [148.18, -36.32], [148.53, -36.47], [148.68, -36.82], [149.03, -36.97], [149.25, -37.5], [149.03, -38.03], [148.5, -38.25], [148.25, -38.15], [148.18, -38.18], [148.03, -38.53], [147.5, -38.75], [147.25, -38.65], [147.0, -38.75], [146.75, -38.65], [146.5, -38.75], [146.25, -38.65], [146.18, -38.68], [146.03, -39.03], [145.5, -39.25], [145.25, -39.15], [145.0, -39.25], [144.47, -39.03], [144.25, -38.5], [144.35, -38.25], [144.32, -38.18], [143.97, -38.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.97, -38.03], [143.75, -37.5], [143.97, -36.97], [144.5, -36.75], [144.75, -36.85], [144.82, -36.82], [144.97, -36.47], [145.5, -36.25], [146.03, -36.47], [146.18, -36.82], [146.25, -36.85], [146.32, -36.82], [146.35, -36.75], [146.25, -36.5], [146.47, -35.97], [147.0, -35.75], [147.25, -35.85], [147.5, -35.75], [148.03, -35.97], [148.18, -36.32], [148.53, -36.47], [148.68, -36.82], [149.03, -36.97], [149.25, -37.5], [149.03, -38.03], [148.5, -38.25], [148.25, -38.15], [148.18, -38.18], [148.03, -38.53], [147.5, -38.75], [147.25, -38.65], [147.0, -38.75], [146.75, -38.65], [146.5, -38.75], [146.25, -38.65], [146.18, -38.68], [146.03, -39.03], [145.5, -39.25], [145.25, -39.15], [145.0, -39.25], [144.47, -39.03], [144.25, -38.5], [144.35, -38.25], [144.32, -38.18], [143.97, -38.03]]]]}, "2022-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.97, -38.03], [143.75, -37.5], [143.97, -36.97], [144.5, -36.75], [144.75, -36.85], [144.82, -36.82], [144.97, -36.47], [145.5, -36.25], [146.03, -36.47], [146.18, -36.82], [146.25, -36.85], [146.32, -36.82], [146.35, -36.75], [146.25, -36.5], [146.47, -35.97], [147.0, -35.75], [147.25, -35.85], [147.5, -35.75], [148.03, -35.97], [148.18, -36.32], [148.53, -36.47], [148.68, -36.82], [149.03, -36.97], [149.25, -37.5], [149.03, -38.03], [148.5, -38.25], [148.25, -38.15], [148.18, -38.18], [148.03, -38.53], [147.5, -38.75], [147.25, -38.65], [147.0, -38.75], [146.75, -38.65], [146.5, -38.75], [146.25, -38.65], [146.18, -38.68], [146.03, -39.03], [145.5, -39.25], [145.25, -39.15], [145.0, -39.25], [144.47, -39.03], [144.25, -38.5], [144.35, -38.25], [144.32, -38.18], [143.97, -38.03]]]]}, "2022-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.97, -38.03], [143.75, -37.5], [143.97, -36.97], [144.5, -36.75], [144.75, -36.85], [144.82, -36.82], [144.97, -36.47], [145.5, -36.25], [146.03, -36.47], [146.18, -36.82], [146.25, -36.85], [146.32, -36.82], [146.35, -36.75], 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amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1204410420784363}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.485800035675936, 3.418439039406735, 3.8906199694116594, 8.310262867124322]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.7593736977864864, -0.8101572579989806, -0.41609947310109874, 8.310262867124322]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2478948046780927, -3.3114570616870824, -2.855475711705676, -1.8898386498609625]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.288087476714054, -4.324370414819839, -3.8354398572313926, -1.8898386498609625]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6888786429511085, -1.6985040631058161, -1.4752116537235573, -1.3777095529597532]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0119834768349634, -2.2322028600574177, -2.3138008558151415, -1.3777095529597532]}}