{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:20.318545", "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-May-01_to_2022-May-05_176.0_-17.5"}, "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": 2022050001260}, "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": "May 01 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 05 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 53091.51867618061}, "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": ["Fiji"]}, "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": -17.5}, "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": 176.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "176.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 173.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 176.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[174.85, -16.25], [174.75, -16.0], [174.97, -15.47], [175.5, -15.25], [175.75, -15.35], [176.0, -15.25], [176.53, -15.47], [176.75, -16.0], [176.65, -16.25], [176.75, -16.5], [176.65, -16.75], [176.75, -17.0], [176.65, -17.25], [176.75, -17.5], [176.53, -18.03], [176.0, -18.25], [175.75, -18.15], [175.68, -18.18], [175.53, -18.53], [175.18, -18.68], [175.03, -19.03], [174.5, -19.25], [174.25, -19.15], [174.0, -19.25], [173.75, -19.15], [173.5, -19.25], [173.25, -19.15], [173.0, -19.25], [172.47, -19.03], [172.25, -18.5], [172.47, -17.97], [172.88, -17.8], [172.75, -17.5], [172.97, -16.97], [173.5, -16.75], [173.75, -16.85], [174.0, -16.75], [174.25, -16.85], [174.32, -16.82], [174.47, -16.47], [174.82, -16.32], [174.85, -16.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[172.47, -17.97], [173.0, -17.75], [173.53, -17.97], [173.75, -18.5], [173.53, -19.03], [173.0, -19.25], [172.47, -19.03], [172.25, -18.5], [172.47, -17.97]]]]}, "2022-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[173.0, -19.25], [172.47, -19.03], [172.25, -18.5], [172.47, -17.97], [173.0, -17.75], [173.25, -17.85], [173.5, -17.75], [173.75, -17.85], [174.0, -17.75], [174.25, -17.85], [174.32, -17.82], [174.47, -17.47], [175.0, -17.25], [175.3, -17.37], [175.35, -17.25], [175.32, -17.18], [174.97, -17.03], [174.75, -16.5], [174.97, -15.97], [175.5, -15.75], [176.03, -15.97], [176.18, -16.32], [176.53, -16.47], [176.75, -17.0], [176.65, -17.25], [176.75, -17.5], [176.53, -18.03], [176.0, -18.25], [175.7, -18.12], [175.53, -18.53], [175.18, -18.68], [175.03, -19.03], [174.5, -19.25], [174.25, -19.15], [174.0, -19.25], [173.75, -19.15], [173.5, -19.25], [173.25, -19.15], [173.0, -19.25]]]]}, "2022-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[172.75, -17.5], [172.97, -16.97], [173.5, -16.75], [173.75, -16.85], [174.0, -16.75], [174.25, -16.85], [174.32, -16.82], [174.47, -16.47], [174.82, -16.32], [174.85, -16.25], [174.75, -16.0], [174.97, -15.47], [175.5, -15.25], [175.75, -15.35], [176.0, -15.25], [176.53, -15.47], [176.75, -16.0], [176.65, -16.25], [176.75, -16.5], [176.65, -16.75], [176.75, -17.0], [176.65, -17.25], [176.75, -17.5], [176.53, -18.03], [176.0, -18.25], [175.75, -18.15], [175.68, -18.18], [175.53, -18.53], [175.18, -18.68], [175.03, -19.03], [174.5, -19.25], [174.25, -19.15], [174.0, -19.25], [173.75, -19.15], [173.5, -19.25], [173.25, -19.15], [173.0, -19.25], [172.47, -19.03], [172.25, -18.5], [172.47, -17.97], [172.88, -17.8], [172.75, -17.5]]]]}, "2022-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[172.75, -17.5], [172.97, -16.97], [173.5, -16.75], [173.75, -16.85], [174.0, -16.75], [174.25, -16.85], [174.32, -16.82], [174.47, -16.47], [174.82, -16.32], [174.85, -16.25], [174.75, -16.0], [174.97, -15.47], [175.5, -15.25], [175.75, -15.35], [176.0, -15.25], [176.53, -15.47], [176.75, -16.0], [176.65, -16.25], [176.75, -16.5], [176.65, -16.75], [176.75, -17.0], [176.65, -17.25], [176.75, -17.5], [176.53, -18.03], [176.0, -18.25], [175.75, -18.15], [175.68, -18.18], [175.53, -18.53], [175.18, -18.68], [175.03, -19.03], [174.5, -19.25], [174.25, -19.15], [174.0, -19.25], [173.75, -19.15], [173.5, -19.25], [173.25, -19.15], [173.0, -19.25], [172.47, -19.03], [172.25, -18.5], [172.47, -17.97], [172.88, -17.8], [172.75, -17.5]]]]}, "2022-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[173.5, -18.25], [172.97, -18.03], [172.75, -17.5], [172.97, -16.97], [173.5, -16.75], [173.75, -16.85], [174.0, -16.75], [174.25, -16.85], [174.32, -16.82], [174.47, -16.47], [174.82, -16.32], [174.85, -16.25], [174.75, -16.0], [174.97, -15.47], [175.5, -15.25], [175.75, -15.35], [176.0, -15.25], [176.53, -15.47], [176.75, -16.0], [176.65, -16.25], [176.75, -16.5], [176.65, -16.75], [176.75, -17.0], [176.65, -17.25], [176.75, -17.5], [176.53, -18.03], [176.0, -18.25], [175.75, -18.15], [175.5, -18.25], [175.25, -18.15], [175.0, -18.25], [174.75, -18.15], [174.5, -18.25], [174.25, -18.15], [174.0, -18.25], [173.75, -18.15], [173.5, -18.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.2456442025302294}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 0.9782482367016745}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.940884484600986, 27.113363591933364, 27.262772295163245, 27.297104555296812, 27.369539105069236]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.940884484600986, 27.601199213492976, 27.645220195419142, 27.59461213225586, 27.816484307584346]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.995899810085632, 0.9340489060788855, 0.9514508174673071, 1.0296842305602512, 0.9699750619603352]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.995899810085632, 1.1772633388539475, 1.0677738530006877, 1.2456442025302294, 1.1309687210772381]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4321123641311384, 1.3980797906443607, 1.5115463669098546, 1.6586541551840828, 1.6320136439201212]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4321123641311384, 1.6984237013352919, 1.7156445659675643, 2.0302891465535122, 2.0032918747626383]}}