{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:50.955115", "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-Feb-21_to_2022-Feb-23_185.5_-31.5"}, "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": 2022020002255}, "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": "February 21 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 23 2022"}, "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": "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": 141733.58259939525}, "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": -31.5}, "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": 185.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "185.5\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": 187.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -33.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -30.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-178.5, -29.25], [-178.25, -29.35], [-178.0, -29.25], [-177.47, -29.47], [-177.32, -29.82], [-177.25, -29.85], [-177.0, -29.75], [-176.75, -29.85], [-176.5, -29.75], [-176.25, -29.85], [-176.0, -29.75], [-175.75, -29.85], [-175.5, -29.75], [-174.97, -29.97], [-174.82, -30.32], [-174.75, -30.35], [-174.5, -30.25], [-173.97, -30.47], [-173.82, -30.82], [-173.75, -30.85], [-173.5, -30.75], [-172.97, -30.97], [-172.82, -31.32], [-172.47, -31.47], [-172.25, -32.0], [-172.47, -32.53], [-172.82, -32.68], [-172.97, -33.03], [-173.32, -33.18], [-173.47, -33.53], [-174.0, -33.75], [-174.25, -33.65], [-174.5, -33.75], [-174.75, -33.65], [-175.0, -33.75], [-175.25, -33.65], [-175.5, -33.75], [-175.75, -33.65], [-175.82, -33.68], [-175.97, -34.03], [-176.5, -34.25], [-176.75, -34.15], [-177.0, -34.25], [-177.25, -34.15], [-177.5, -34.25], [-178.03, -34.03], [-178.18, -33.68], [-178.53, -33.53], [-178.68, -33.18], [-179.03, -33.03], [-179.25, -32.5], [-179.03, -31.97], [-178.5, -31.75], [-178.75, -31.65], [-179.0, -31.75], [-179.25, -31.65], [-179.5, -31.75], [-180.0, -31.54], [-180.0, -30.46], [-179.68, -30.32], [-179.53, -29.97], [-179.18, -29.82], [-179.03, -29.47], [-178.5, -29.25]], [[-178.25, -31.85], [-178.0, -31.75], [-177.75, -31.85], [-177.5, -31.75], [-177.25, -31.85], [-177.18, -31.82], [-177.03, -31.47], [-176.68, -31.32], [-176.65, -31.25], [-176.68, -31.18], [-176.75, -31.15], [-177.0, -31.25], [-177.25, -31.15], [-177.5, -31.25], [-177.75, -31.15], [-177.82, -31.18], [-177.97, -31.53], [-178.5, -31.75], [-178.25, -31.85]]], [[[179.97, -30.47], [180.0, -30.46], [180.0, -31.54], [179.97, -31.53], [179.75, -31.0], [179.97, -30.47]]]]}}, "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": {"2022-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-179.53, -29.97], [-179.18, -29.82], [-179.03, -29.47], [-178.5, -29.25], [-178.25, -29.35], [-178.0, 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[179.97, -30.47], [180.0, -30.46], [180.0, -31.54]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.10004891566831}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.6208767839917089}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.40417560714269, 23.55930133261728, 23.406147210160896]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.23318675119026, 24.526772393488045, 24.271187124440075]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.562806930022853, 1.720354103010875, 1.5794693189413982]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.8896067759807238, 2.10004891566831, 1.9116508324184451]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5720862778294817, 1.7375524947736087, 1.5915376673521182]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8628388445059096, 2.041133983358405, 1.996171623957946]}}