{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:13.523209", "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": "2020-Sep-12_to_2020-Sep-14_182.0_-31.0"}, "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": 2020090000357}, "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": "September 12 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 14 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 79932.91995288985}, "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": ["New Zealand"]}, "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": ["Fleming Seamount", "Pacific Ocean"]}, "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": -31.0}, "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": 182.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "182.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 180.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 184.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -32.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -28.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-179.5, -32.75], [-179.25, -32.646], [-179.001, -32.75], [-179.5, -32.75]]], [[[-177.75, -31.646], [-177.677, -31.677], 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"IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.W.South-America", "S.E.South-America", "W.Southern-Africa", "E.Southern-Africa", "C.Australia", "E.Australia", "S.Australia", "New-Zealand", "S.Pacific-Ocean", "S.Atlantic-Ocean", "S.Indian-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-09-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-179.67677669529664, -31.32322330470336], [-179.64644660940672, -31.25], [-179.75, -31.0], [-179.53033008588991, -30.46966991411009], [-179.17677669529664, -30.32322330470336], [-179.14644660940672, -30.25], [-179.25, -30.0], [-179.03033008588991, -29.46966991411009], [-178.5, -29.25], [-178.25, -29.353553390593273], [-178.17677669529664, -29.32322330470336], [-178.14644660940672, -29.25], [-178.25, -29.0], [-178.14644660940672, -28.75], [-178.25, -28.5], [-178.03033008588991, -27.96966991411009], [-177.5, 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mean t2m.", "value": [14.806515226648628, 15.004460102662279, 15.088831272514085]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.072022026150194, 14.31399579230964, 14.464869791817307]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7304433407295485, -1.5878160799466874, -1.5632314256011435]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8959902971595284, -1.8808925368964537, -1.763403094041962]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.537152646066325, -1.4522897654441302, -1.4687865853556272]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6778888347399625, -1.6762819211997622, -1.699819346123884]}}