{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:01.022896", "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": "2021-Oct-05_to_2021-Oct-08_171.5_-45.0"}, "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": 2021100001486}, "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": "October 05 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 08 2021"}, "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": "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": 62861.509422489944}, "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": -45.0}, "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": 171.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "171.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 171.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 175.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -45.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -41.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[172.5, -43.75], [172.75, -43.85], [172.82, -43.82], [172.96, -43.5], [172.75, -43.0], [172.97, -42.47], [173.5, -42.25], [173.75, -42.35], [174.0, -42.25], [174.25, -42.35], [174.32, -42.32], [174.35, -42.25], [174.25, -42.0], [174.35, -41.75], [174.32, -41.68], [173.97, -41.53], [173.75, -41.0], [173.97, -40.47], [174.5, -40.25], [174.75, -40.35], [175.0, -40.25], [175.53, -40.47], [175.75, -41.0], [175.65, -41.25], [175.68, -41.32], [176.03, -41.47], [176.25, -42.0], [176.15, -42.25], [176.25, -42.5], [176.15, -42.75], [176.25, -43.0], [176.04, -43.5], [176.25, -44.0], [176.03, -44.53], [175.68, -44.68], [175.53, -45.03], [175.0, -45.25], [174.75, -45.15], [174.5, -45.25], [174.25, -45.15], [174.0, -45.25], [173.75, -45.15], [173.5, -45.25], [173.25, -45.15], [173.0, -45.25], [172.75, -45.15], [172.68, -45.18], [172.53, -45.53], [172.0, -45.75], [171.75, -45.65], [171.5, -45.75], [170.97, -45.53], [170.75, -45.0], [170.97, -44.47], [171.32, -44.32], [171.47, -43.97], [172.0, -43.75], [172.25, -43.85], [172.5, -43.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["New-Zealand"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[174.25, -41.0], [174.47, -40.47], [175.0, -40.25], [175.53, -40.47], [175.75, -41.0], [175.65, -41.25], [175.75, -41.5], [175.53, -42.03], [175.0, -42.25], [174.47, -42.03], [174.25, -41.5], [174.35, -41.25], [174.25, -41.0]]]]}, "2021-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[171.47, -43.97], [172.0, -43.75], [172.25, -43.85], [172.5, -43.75], [172.75, -43.85], [172.82, -43.82], [172.96, -43.5], [172.75, -43.0], [172.97, -42.47], [173.5, -42.25], [173.75, -42.35], [174.0, -42.25], [174.25, -42.35], [174.32, -42.32], [174.35, -42.25], [174.25, -42.0], [174.35, -41.75], [174.32, -41.68], [173.97, -41.53], [173.75, -41.0], [173.97, -40.47], [174.5, -40.25], [174.75, -40.35], [175.0, -40.25], [175.53, -40.47], [175.75, -41.0], [175.65, -41.25], [175.68, -41.32], [176.03, -41.47], [176.25, -42.0], [176.15, -42.25], [176.25, -42.5], [176.15, -42.75], [176.25, -43.0], [176.04, -43.5], [176.25, -44.0], [176.03, -44.53], [175.68, -44.68], [175.53, -45.03], [175.0, -45.25], [174.75, -45.15], [174.5, -45.25], [174.25, -45.15], [174.0, -45.25], [173.75, -45.15], [173.5, -45.25], [173.25, -45.15], [173.0, -45.25], [172.75, -45.15], [172.68, -45.18], [172.53, -45.53], [172.0, -45.75], [171.75, -45.65], [171.5, -45.75], [170.97, -45.53], [170.75, -45.0], [170.97, -44.47], [171.32, -44.32], [171.47, -43.97]]]]}, "2021-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[171.47, -43.97], [172.0, -43.75], [172.25, -43.85], [172.5, -43.75], [172.75, -43.85], [172.82, -43.82], [172.96, -43.5], [172.75, -43.0], [172.97, -42.47], [173.5, -42.25], [173.75, -42.35], [174.0, -42.25], [174.25, -42.35], [174.32, -42.32], [174.35, -42.25], [174.25, -42.0], [174.35, -41.75], [174.32, 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-42.35], [174.0, -42.25], [174.25, -42.35], [174.32, -42.32], [174.35, -42.25], [174.25, -42.0], [174.38, -41.7], [173.97, -41.53], [173.75, -41.0], [173.97, -40.47], [174.5, -40.25], [175.03, -40.47], [175.25, -41.0], [175.13, -41.3], [175.25, -41.35], [175.5, -41.25], [176.03, -41.47], [176.25, -42.0], [176.15, -42.25], [176.25, -42.5], [176.15, -42.75], [176.25, -43.0], [176.04, -43.5], [176.25, -44.0], [176.03, -44.53], [175.68, -44.68], [175.53, -45.03], [175.0, -45.25], [174.75, -45.15], [174.5, -45.25], [174.25, -45.15], [174.0, -45.25], [173.75, -45.15], [173.5, -45.25], [173.25, -45.15], [173.0, -45.25], [172.75, -45.15], [172.68, -45.18], [172.53, -45.53], [172.0, -45.75], [171.75, -45.65], [171.5, -45.75], [170.97, -45.53], [170.75, -45.0], [170.97, -44.47], [171.32, -44.32], [171.47, -43.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.5360234083582895}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.2843802616720175}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.186625801116179, 12.87524910075166, 13.034160945922338, 12.580821931952016]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.300615902689287, 14.378361046776092, 13.981844255910687, 13.960974951128378]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9399101029041503, 2.3183320032758354, 2.4902643351994738, 2.052593242205096]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.9424996683477502, 3.000264676200686, 3.5360234083582895, 2.606704123324505]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2057240848221704, 1.5575118845434426, 1.731060400087585, 1.5112301760268478]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2393095153623679, 1.9290787605872657, 2.6617371866133888, 1.8637212045893703]}}