{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:31.764011", "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": "2024-Dec-01_to_2024-Dec-06_177.0_-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": 2024120000794}, "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": "December 01 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 06 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 296187.6513790032}, "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": ["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": -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": 177.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "177.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 172.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 182.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -43.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -36.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[173.0, -40.25], [173.25, -40.35], [173.5, -40.25], [173.75, -40.35], [174.0, -40.25], [174.53, -40.47], [174.68, -40.82], [174.75, -40.85], [174.82, -40.82], [174.96, -40.5], [174.91, -40.39], [174.82, -40.18], [174.75, -40.15], [174.5, -40.25], [173.97, -40.03], [173.75, -39.5], [173.97, -38.97], [174.32, -38.82], [174.35, -38.75], [174.25, -38.5], [174.35, -38.25], [174.25, -38.0], [174.46, -37.5], [174.32, -37.18], [173.97, -37.03], [173.75, -36.5], [173.85, -36.25], [173.75, -36.0], [173.97, -35.47], [174.5, -35.25], [175.03, -35.47], [175.25, -36.0], [175.15, -36.25], [175.18, -36.32], [175.5, -36.46], [176.0, -36.25], [176.25, -36.35], [176.5, -36.25], [177.03, -36.47], [177.18, -36.82], [177.53, -36.97], [177.68, -37.32], [177.75, -37.35], [178.0, -37.25], [178.25, -37.35], [178.5, -37.25], [178.75, -37.35], [179.0, -37.25], [179.25, -37.35], [179.5, -37.25], [179.75, -37.35], [180.0, -37.25], [180.0, -40.75], [179.75, -40.65], [179.68, -40.68], [179.54, -41.0], [179.75, -41.5], [179.53, -42.03], [179.18, -42.18], [179.03, -42.53], [178.5, -42.75], [178.25, -42.65], [178.0, -42.75], [177.75, -42.65], [177.68, -42.68], [177.53, -43.03], [177.18, -43.18], [177.03, -43.53], [176.5, -43.75], [176.25, -43.65], [176.0, -43.75], [175.47, -43.53], [175.25, -43.0], [175.35, -42.75], [175.32, -42.68], [175.25, -42.65], [175.0, -42.75], [174.75, -42.65], [174.5, -42.75], [174.25, -42.65], [174.0, -42.75], [173.75, -42.65], [173.68, -42.68], [173.53, -43.03], [173.0, -43.25], [172.75, -43.15], [172.5, -43.25], [171.97, -43.03], [171.75, -42.5], [171.88, -42.2], [171.47, -42.03], [171.25, -41.5], [171.47, -40.97], [171.82, -40.82], [171.97, -40.47], [172.5, -40.25], [172.75, -40.35], [173.0, -40.25]]], [[[-178.47, -38.47], [-178.32, -38.82], [-178.25, -38.85], [-178.0, -38.75], [-177.47, -38.97], [-177.25, -39.5], [-177.47, -40.03], [-177.82, -40.18], [-177.97, -40.53], [-178.5, -40.75], [-178.75, -40.65], [-179.0, -40.75], [-179.25, -40.65], [-179.5, -40.75], [-179.75, -40.65], [-180.0, -40.75], [-180.0, -37.25], [-179.47, -37.47], [-179.32, -37.82], [-178.97, -37.97], [-178.82, -38.32], [-178.47, -38.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["New-Zealand", "S.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[172.47, -40.97], [173.0, -40.75], [173.25, -40.85], [173.5, -40.75], [174.03, -40.97], [174.25, -41.5], [174.15, -41.75], [174.25, -42.0], [174.03, -42.53], [173.5, -42.75], [173.25, -42.65], [173.0, -42.75], [172.47, -42.53], [172.25, -42.0], [172.35, -41.75], [172.25, -41.5], [172.47, -40.97]]], [[[173.97, -40.03], [173.75, -39.5], [173.97, -38.97], [174.5, -38.75], [175.03, -38.97], [175.2, -39.37], [175.32, -39.32], [175.47, -38.97], [175.82, -38.82], [175.97, -38.47], [176.5, -38.25], [177.03, -38.47], [177.25, -39.0], [177.15, -39.25], [177.25, -39.5], [177.15, -39.75], [177.25, -40.0], [177.15, -40.25], [177.25, -40.5], [177.15, -40.75], [177.25, -41.0], [177.03, -41.53], [176.5, -41.75], [176.25, -41.65], [176.18, -41.68], [176.03, -42.03], [175.5, -42.25], [174.97, -42.03], [174.75, -41.5], [174.97, -40.97], [175.32, -40.82], [175.35, -40.75], [175.32, -40.68], [174.97, -40.53], [174.8, -40.12], [174.5, -40.25], [173.97, -40.03]]]]}, "2024-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[171.97, -40.47], [172.5, -40.25], [172.75, -40.35], [173.0, -40.25], [173.25, -40.35], [173.5, -40.25], [173.75, -40.35], [174.0, -40.25], [174.53, -40.47], [174.68, -40.82], [174.75, -40.85], [174.82, -40.82], [174.96, -40.5], [174.82, -40.18], [174.75, -40.15], [174.5, -40.25], [173.97, -40.03], [173.75, -39.5], [173.97, -38.97], [174.32, -38.82], [174.35, -38.75], [174.25, -38.5], [174.35, -38.25], [174.25, -38.0], [174.46, -37.5], [174.25, -37.0], [174.47, -36.47], [175.0, -36.25], [175.53, -36.47], [175.68, -36.82], [176.03, -36.97], [176.18, -37.32], [176.25, -37.35], [176.5, -37.25], [176.75, -37.35], [177.0, -37.25], [177.25, -37.35], [177.5, -37.25], [177.75, -37.35], [178.0, -37.25], [178.25, -37.35], [178.5, -37.25], [179.03, -37.47], [179.25, -38.0], [179.15, -38.25], [179.18, -38.32], [179.53, -38.47], [179.75, -39.0], [179.65, -39.25], [179.75, -39.5], [179.65, -39.75], [179.75, -40.0], [179.53, -40.53], [179.18, -40.68], [179.13, -40.8], [179.53, -40.97], [179.75, -41.5], [179.53, -42.03], [179.18, -42.18], [179.03, -42.53], [178.5, -42.75], [178.25, -42.65], [178.0, -42.75], [177.75, -42.65], [177.68, -42.68], [177.53, -43.03], [177.18, -43.18], [177.03, -43.53], [176.5, -43.75], [176.25, -43.65], [176.0, -43.75], [175.47, -43.53], [175.25, -43.0], [175.35, -42.75], [175.32, -42.68], [175.25, -42.65], [175.0, -42.75], [174.75, -42.65], [174.5, -42.75], [174.25, -42.65], [174.0, -42.75], [173.75, -42.65], [173.68, -42.68], [173.53, -43.03], [173.0, -43.25], [172.75, -43.15], [172.5, -43.25], [171.97, -43.03], [171.75, -42.5], [171.88, -42.2], [171.47, -42.03], [171.25, -41.5], [171.47, -40.97], [171.82, -40.82], [171.97, -40.47]]]]}, "2024-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[171.97, -40.47], [172.5, -40.25], [172.75, -40.35], [173.0, -40.25], [173.25, -40.35], [173.5, -40.25], [173.75, -40.35], [174.0, -40.25], [174.53, -40.47], [174.68, -40.82], [174.75, -40.85], [174.82, -40.82], [174.96, -40.5], [174.82, -40.18], [174.75, -40.15], [174.5, -40.25], [173.97, -40.03], [173.75, -39.5], [173.97, -38.97], [174.32, -38.82], [174.35, -38.75], [174.25, -38.5], [174.35, -38.25], [174.25, -38.0], [174.46, -37.5], [174.32, -37.18], [173.97, -37.03], [173.75, -36.5], [173.85, -36.25], [173.75, -36.0], [173.97, -35.47], [174.5, -35.25], [175.03, -35.47], [175.25, -36.0], [175.15, -36.25], [175.18, -36.32], [175.53, -36.47], [175.68, -36.82], [175.75, -36.85], [176.0, -36.75], [176.53, -36.97], [176.68, -37.32], [176.75, -37.35], [177.0, -37.25], [177.25, -37.35], [177.5, -37.25], [177.75, -37.35], [178.0, -37.25], [178.25, -37.35], [178.5, -37.25], [178.75, -37.35], [179.0, -37.25], [179.25, -37.35], [179.5, -37.25], [179.75, -37.35], [180.0, -37.25], [180.0, -40.75], [179.75, -40.65], [179.68, -40.68], [179.54, -41.0], [179.75, -41.5], [179.53, -42.03], [179.18, -42.18], [179.03, -42.53], [178.5, -42.75], [178.25, -42.65], [178.0, -42.75], [177.75, -42.65], [177.68, -42.68], [177.53, -43.03], [177.18, -43.18], [177.03, -43.53], [176.5, -43.75], [176.25, -43.65], [176.0, -43.75], [175.47, -43.53], [175.25, -43.0], [175.35, -42.75], [175.32, -42.68], [175.25, -42.65], [175.0, -42.75], [174.75, -42.65], [174.5, -42.75], [174.25, -42.65], [174.0, -42.75], [173.75, -42.65], [173.68, -42.68], [173.53, -43.03], [173.0, -43.25], [172.75, -43.15], [172.5, -43.25], [171.97, -43.03], [171.75, -42.5], [171.88, -42.2], [171.47, -42.03], [171.25, -41.5], [171.47, -40.97], [171.82, -40.82], [171.97, -40.47]]], [[[-180.0, -37.25], [-179.47, -37.47], [-179.32, -37.82], [-178.97, -37.97], [-178.82, -38.32], [-178.47, -38.47], [-178.32, -38.82], [-178.25, -38.85], [-178.0, -38.75], [-177.47, -38.97], [-177.25, -39.5], [-177.47, -40.03], [-177.82, -40.18], [-177.97, -40.53], [-178.5, -40.75], [-178.75, -40.65], [-179.0, -40.75], [-179.25, -40.65], [-179.5, -40.75], [-179.75, -40.65], [-180.0, -40.75], [-180.0, -37.25]]]]}, "2024-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[171.97, -40.47], [172.5, -40.25], [172.75, -40.35], [173.0, -40.25], [173.25, -40.35], [173.5, -40.25], [173.75, -40.35], [174.0, -40.25], [174.53, -40.47], [174.68, -40.82], [174.75, -40.85], [174.82, -40.82], [174.96, -40.5], [174.82, -40.18], [174.75, -40.15], [174.5, -40.25], [173.97, -40.03], [173.75, -39.5], [173.97, -38.97], [174.32, -38.82], [174.35, -38.75], [174.25, -38.5], [174.35, -38.25], [174.25, -38.0], [174.46, -37.5], [174.32, -37.18], [173.97, -37.03], [173.75, -36.5], [173.85, -36.25], [173.75, -36.0], [173.97, -35.47], [174.5, -35.25], [175.03, -35.47], [175.25, -36.0], [175.15, -36.25], [175.18, -36.32], [175.5, -36.46], [176.0, -36.25], [176.25, -36.35], [176.5, -36.25], [177.03, -36.47], [177.18, -36.82], [177.53, -36.97], [177.68, -37.32], [177.75, -37.35], [178.0, -37.25], [178.25, -37.35], [178.5, -37.25], [178.75, -37.35], [179.0, -37.25], [179.25, -37.35], [179.5, -37.25], [179.75, -37.35], [180.0, -37.25], [180.0, -40.75], [179.75, -40.65], [179.68, -40.68], [179.54, -41.0], [179.75, -41.5], [179.53, -42.03], [179.18, -42.18], [179.03, -42.53], [178.5, -42.75], [178.25, -42.65], [178.0, -42.75], [177.75, -42.65], [177.68, -42.68], [177.53, -43.03], [177.18, -43.18], [177.03, -43.53], [176.5, -43.75], [176.25, -43.65], [176.0, -43.75], [175.47, -43.53], [175.25, -43.0], [175.35, -42.75], [175.32, -42.68], [175.25, -42.65], [175.0, -42.75], [174.75, -42.65], [174.5, -42.75], [174.25, -42.65], [174.0, -42.75], [173.75, -42.65], [173.68, -42.68], [173.53, -43.03], [173.0, -43.25], [172.75, -43.15], [172.5, -43.25], [171.97, -43.03], [171.75, -42.5], [171.88, -42.2], [171.47, -42.03], [171.25, -41.5], [171.47, -40.97], [171.82, -40.82], [171.97, -40.47]]], [[[-180.0, -37.25], [-179.47, -37.47], [-179.32, -37.82], [-178.97, -37.97], [-178.82, -38.32], [-178.47, -38.47], [-178.32, -38.82], [-178.25, -38.85], [-178.0, -38.75], [-177.47, -38.97], [-177.25, -39.5], [-177.47, -40.03], [-177.82, -40.18], [-177.97, -40.53], [-178.5, -40.75], [-178.75, -40.65], [-179.0, -40.75], [-179.25, -40.65], [-179.5, -40.75], [-179.75, -40.65], [-180.0, -40.75], [-180.0, -37.25]]]]}, "2024-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[172.25, -41.0], [172.47, -40.47], [173.0, -40.25], [173.25, -40.35], [173.5, -40.25], [173.75, -40.35], [174.0, -40.25], [174.53, -40.47], [174.68, -40.82], [175.03, -40.97], [175.25, -41.5], [175.03, -42.03], [174.5, -42.25], [174.25, -42.15], [174.18, -42.18], [174.03, -42.53], [173.5, -42.75], [172.97, -42.53], [172.75, -42.0], [172.85, -41.75], [172.82, -41.68], [172.47, -41.53], [172.25, -41.0]]], [[[173.97, -35.47], [174.5, -35.25], [175.03, -35.47], [175.25, -36.0], [175.15, -36.25], [175.18, -36.32], [175.5, -36.46], [176.0, -36.25], [176.25, -36.35], [176.5, -36.25], [177.03, -36.47], [177.18, -36.82], [177.53, -36.97], [177.68, -37.32], [177.75, -37.35], [178.0, -37.25], [178.25, -37.35], [178.5, -37.25], [178.75, -37.35], [179.0, -37.25], [179.25, -37.35], [179.5, -37.25], [179.75, -37.35], [180.0, -37.25], [180.0, -40.75], [179.75, -40.65], [179.68, -40.68], [179.53, -41.03], [179.0, -41.25], [178.75, -41.15], [178.5, -41.25], [178.25, -41.15], [178.18, -41.18], [178.03, -41.53], [177.5, -41.75], [177.25, -41.65], [177.18, -41.68], [177.03, -42.03], [176.5, -42.25], [175.97, -42.03], [175.75, -41.5], [175.97, -40.97], [176.32, -40.82], [176.35, -40.75], [176.25, -40.5], [176.35, -40.25], [176.32, -40.18], [175.97, -40.03], [175.75, -39.5], [175.85, -39.25], [175.75, -39.0], [175.85, -38.75], [175.82, -38.68], [175.47, -38.53], [175.25, -38.0], [175.35, -37.75], [175.3, -37.62], [175.0, -37.75], [174.47, -37.53], [174.32, -37.18], [173.97, -37.03], [173.75, -36.5], [173.85, -36.25], [173.75, -36.0], [173.97, -35.47]]], [[[-180.0, -37.25], [-179.47, -37.47], [-179.32, -37.82], [-178.97, -37.97], [-178.82, -38.32], [-178.47, -38.47], [-178.32, -38.82], [-178.25, -38.85], [-178.0, -38.75], [-177.47, -38.97], [-177.25, -39.5], [-177.47, -40.03], [-177.82, -40.18], [-177.97, -40.53], [-178.5, -40.75], [-178.75, -40.65], [-179.0, -40.75], [-179.25, -40.65], [-179.5, -40.75], [-179.75, -40.65], [-180.0, -40.75], [-180.0, -37.25]]]]}, "2024-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[175.25, -37.5], [175.35, -37.25], [175.25, -37.0], [175.47, -36.47], [176.0, -36.25], [176.25, -36.35], [176.5, -36.25], [177.03, -36.47], [177.18, -36.82], [177.53, -36.97], [177.68, -37.32], [178.03, -37.47], [178.25, -38.0], [178.03, -38.53], [177.5, -38.75], [177.25, -38.65], [177.18, -38.68], [177.03, -39.03], [176.5, -39.25], [175.97, -39.03], [175.82, -38.68], [175.47, -38.53], [175.25, -38.0], [175.35, -37.75], [175.25, -37.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.826847212844086}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.320095003023286}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.973522440592433, 17.94003646582894, 18.47823379138282, 18.81230913289386, 19.130875201638958, 19.406827799479174]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.23048553466799, 21.41974538167318, 23.195736185709677, 22.587906138102255, 23.446469879150413, 20.458479817708337]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.284961056080146, 3.148245427405458, 3.3267237228954913, 3.553836544942485, 3.1882903877703868, 2.9690771934042344]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.659337248986219, 5.242439162932328, 6.619157670034554, 6.826847212844086, 6.257736325133578, 3.94946034352148]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3543928884386305, 1.5602931324482205, 1.731117575537472, 1.8461020182329708, 1.770001804772948, 1.7761042499336945]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5983889062732832, 2.0410229455327995, 2.562118317384369, 2.9864554247980917, 2.861704901497051, 2.086201441557707]}}