{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:17.439875", "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": "2023-Sep-01_to_2023-Sep-06_175.5_-36.0"}, "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": 2023090000622}, "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 01 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 06 2023"}, "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": 67483.17145494536}, "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": -36.0}, "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": 175.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "175.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 173.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 177.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -37.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -34.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[176.25, -34.85], [176.32, -34.82], [176.47, -34.47], [177.0, -34.25], [177.53, -34.47], [177.75, -35.0], [177.54, -35.5], [177.68, -35.82], [178.03, -35.97], [178.25, -36.5], [178.03, -37.03], [177.68, -37.18], [177.53, -37.53], [177.18, -37.68], [177.03, -38.03], [176.5, -38.25], [175.97, -38.03], [175.75, -37.5], [175.85, -37.25], [175.82, -37.18], [175.75, -37.15], [175.5, -37.25], [175.25, -37.15], [175.0, -37.25], [174.75, -37.15], [174.5, -37.25], [174.25, -37.15], [174.0, -37.25], [173.75, -37.15], [173.5, -37.25], [172.97, -37.03], [172.75, -36.5], [172.97, -35.97], [173.5, -35.75], [173.75, -35.85], [173.82, -35.82], [173.85, -35.75], [173.75, -35.5], [173.85, -35.25], [173.75, -35.0], [173.85, -34.75], [173.75, -34.5], [173.97, -33.97], [174.5, -33.75], [175.03, -33.97], [175.18, -34.32], [175.53, -34.47], [175.68, -34.82], [175.75, -34.85], [176.0, -34.75], [176.25, -34.85]]]]}}, "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": {"2023-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[173.75, -35.5], [173.85, -35.25], [173.75, -35.0], [173.97, -34.47], [174.5, -34.25], [175.03, -34.47], [175.18, -34.82], [175.53, -34.97], [175.68, -35.32], [175.75, -35.35], [176.0, -35.25], [176.53, -35.47], [176.75, -36.0], [176.65, -36.25], [176.75, -36.5], [176.53, -37.03], [176.0, -37.25], [175.75, -37.15], [175.5, -37.25], [175.25, -37.15], [175.0, -37.25], [174.47, -37.03], [174.32, -36.68], [173.97, -36.53], [173.75, -36.0], [173.85, -35.75], [173.75, -35.5]]]]}, "2023-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[173.5, -37.25], [172.97, -37.03], [172.75, -36.5], [172.97, -35.97], [173.5, -35.75], [173.75, -35.85], [173.82, -35.82], [173.85, -35.75], [173.75, -35.5], [173.85, -35.25], [173.75, -35.0], [173.97, -34.47], [174.5, -34.25], [174.75, -34.35], [175.0, -34.25], [175.53, -34.47], [175.68, -34.82], [176.03, -34.97], [176.18, -35.32], [176.53, -35.47], [176.68, -35.82], [177.03, -35.97], [177.25, -36.5], [177.15, -36.75], [177.25, -37.0], [177.03, -37.53], [176.5, -37.75], [175.97, -37.53], [175.82, -37.18], [175.75, -37.15], [175.5, -37.25], [175.25, -37.15], [175.0, -37.25], [174.75, -37.15], [174.5, -37.25], [174.25, -37.15], [174.0, -37.25], [173.75, -37.15], [173.5, -37.25]]]]}, "2023-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[173.5, -37.25], [172.97, -37.03], [172.75, -36.5], [172.97, -35.97], [173.5, -35.75], [173.75, -35.85], [173.82, -35.82], [173.85, -35.75], [173.75, -35.5], [173.85, -35.25], [173.75, -35.0], [173.85, -34.75], [173.75, -34.5], [173.97, -33.97], [174.5, -33.75], [175.03, -33.97], [175.18, -34.32], [175.53, -34.47], [175.68, -34.82], [176.03, -34.97], [176.18, -35.32], [176.53, -35.47], [176.68, -35.82], [177.03, -35.97], [177.25, -36.5], [177.15, -36.75], [177.25, -37.0], [177.03, -37.53], [176.5, -37.75], [175.97, -37.53], [175.82, -37.18], [175.75, 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-37.15], [175.0, -37.25], [174.75, -37.15], [174.5, -37.25], [174.25, -37.15], [174.0, -37.25], [173.75, -37.15], [173.5, -37.25]]]]}, "2023-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[174.75, -36.0], [174.97, -35.47], [175.32, -35.32], [175.47, -34.97], [176.0, -34.75], [176.25, -34.85], [176.32, -34.82], [176.47, -34.47], [177.0, -34.25], [177.53, -34.47], [177.75, -35.0], [177.54, -35.5], [177.68, -35.82], [178.03, -35.97], [178.25, -36.5], [178.03, -37.03], [177.68, -37.18], [177.53, -37.53], [177.18, -37.68], [177.03, -38.03], [176.5, -38.25], [175.97, -38.03], [175.75, -37.5], [175.85, -37.25], [175.82, -37.18], [175.75, -37.15], [175.5, -37.25], [174.97, -37.03], [174.75, -36.5], [174.85, -36.25], [174.75, -36.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.3140671938118658}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.6013716554182322}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.85044546185867, 15.044031522567082, 15.14407771492165, 15.286644444889816, 15.451080988803824, 15.518454434411694]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.653626584684389, 15.786597608679699, 16.018865709889496, 16.100750892671044, 16.262960758261386, 15.975089579074506]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.4937783780436633, 1.5737772658273457, 1.5770347695469284, 1.5371253501712259, 1.6888111823188359, 1.691830612606706]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.088300173236348, 2.226955295917776, 2.0862003622219163, 2.3140671938118658, 2.250172177627121, 1.860478959691818]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3197746949206859, 1.3947203719936008, 1.4194575495892416, 1.3915667469275304, 1.4674752932110662, 1.4088602890759732]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5237061621553079, 1.6118252940847426, 1.571420308686591, 1.7423054699446847, 1.6651604202607817, 1.550845679158005]}}