{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:23.791205", "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-Dec-01_to_2021-Dec-03_155.5_-55.0"}, "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": 2021120001223}, "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 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 03 2021"}, "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": 50904.48219677463}, "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": ["Australia"]}, "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": ["Indian 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": -55.0}, "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": 155.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "155.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 154.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 159.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -56.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -54.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[153.47, -54.47], [154.0, -54.25], [154.25, -54.35], [154.32, -54.32], [154.47, -53.97], [155.0, -53.75], [155.25, -53.85], [155.5, -53.75], [156.03, -53.97], [156.18, -54.32], [156.25, -54.35], [156.5, -54.25], [157.03, -54.47], [157.18, -54.82], [157.25, -54.85], [157.5, -54.75], [157.75, -54.85], [157.82, -54.82], [157.85, -54.75], [157.75, -54.5], [157.97, -53.97], [158.5, -53.75], [159.03, -53.97], [159.18, -54.32], [159.25, -54.35], [159.5, -54.25], [160.03, -54.47], [160.25, -55.0], [160.03, -55.53], [159.68, -55.68], [159.53, -56.03], [159.18, -56.18], [159.03, -56.53], [158.5, -56.75], [158.25, -56.65], [158.18, -56.68], [158.03, -57.03], [157.5, -57.25], [157.25, -57.15], [157.0, -57.25], [156.47, -57.03], [156.32, -56.68], [155.97, -56.53], [155.82, -56.18], [155.75, -56.15], [155.5, -56.25], [155.25, -56.15], [155.0, -56.25], [154.75, -56.15], [154.5, -56.25], [153.97, -56.03], [153.82, -55.68], [153.47, -55.53], [153.25, -55.0], [153.47, -54.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[153.47, -55.53], [153.25, -55.0], [153.47, -54.47], [154.0, -54.25], [154.25, -54.35], [154.32, -54.32], [154.47, -53.97], [155.0, -53.75], [155.25, -53.85], [155.5, -53.75], [156.03, -53.97], [156.18, -54.32], [156.25, -54.35], [156.5, -54.25], [157.03, -54.47], [157.18, -54.82], [157.25, -54.85], [157.5, -54.75], [157.75, -54.85], [157.82, -54.82], [157.85, -54.75], [157.75, -54.5], [157.97, -53.97], [158.5, -53.75], [159.03, -53.97], [159.18, -54.32], [159.25, -54.35], [159.5, -54.25], [160.03, -54.47], [160.25, -55.0], [160.03, -55.53], [159.68, -55.68], [159.53, -56.03], [159.18, -56.18], [159.03, -56.53], [158.5, -56.75], [158.25, -56.65], [158.18, -56.68], [158.03, -57.03], [157.5, -57.25], [157.25, -57.15], [157.0, -57.25], [156.47, -57.03], [156.32, -56.68], [155.97, -56.53], [155.82, -56.18], [155.75, -56.15], [155.5, -56.25], [155.25, -56.15], [155.0, -56.25], [154.75, -56.15], [154.5, -56.25], [153.97, -56.03], [153.82, -55.68], [153.47, -55.53]]]]}, "2021-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[153.47, -55.53], [153.25, -55.0], [153.47, -54.47], [154.0, -54.25], [154.25, -54.35], [154.32, -54.32], [154.47, -53.97], [155.0, -53.75], [155.25, -53.85], [155.5, -53.75], [156.03, -53.97], [156.18, -54.32], [156.25, -54.35], [156.5, -54.25], [157.03, -54.47], [157.18, -54.82], [157.25, -54.85], [157.5, -54.75], [157.75, -54.85], [157.82, -54.82], [157.85, -54.75], [157.75, -54.5], [157.97, -53.97], [158.5, -53.75], [159.03, -53.97], [159.18, -54.32], [159.25, -54.35], [159.5, -54.25], [160.03, -54.47], [160.25, -55.0], [160.03, -55.53], [159.68, -55.68], [159.53, -56.03], [159.18, -56.18], [159.03, -56.53], [158.5, -56.75], [158.25, -56.65], [158.18, -56.68], [158.03, -57.03], [157.5, -57.25], [157.25, -57.15], [157.0, -57.25], [156.47, -57.03], [156.32, -56.68], [155.97, -56.53], [155.82, -56.18], [155.75, -56.15], [155.5, -56.25], [155.25, -56.15], [155.0, -56.25], [154.75, -56.15], [154.5, -56.25], [153.97, -56.03], [153.82, -55.68], [153.47, -55.53]]]]}, "2021-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[153.47, -55.53], [153.25, -55.0], [153.47, -54.47], [154.0, -54.25], [154.25, -54.35], [154.32, -54.32], [154.47, -53.97], [155.0, -53.75], [155.25, -53.85], [155.5, -53.75], [156.03, -53.97], [156.18, -54.32], [156.25, -54.35], [156.5, -54.25], [157.03, -54.47], [157.18, -54.82], [157.25, -54.85], [157.5, -54.75], [157.75, -54.85], [157.82, -54.82], [157.85, -54.75], [157.75, -54.5], [157.97, -53.97], [158.5, -53.75], [159.03, -53.97], [159.18, -54.32], [159.25, -54.35], [159.5, -54.25], [160.03, -54.47], [160.25, -55.0], [160.03, -55.53], [159.68, -55.68], [159.53, -56.03], [159.18, -56.18], [159.03, -56.53], [158.5, -56.75], [158.25, -56.65], [158.18, -56.68], [158.03, -57.03], [157.5, -57.25], [157.25, -57.15], [157.0, -57.25], [156.47, -57.03], [156.32, -56.68], [155.97, -56.53], [155.82, -56.18], [155.75, -56.15], [155.5, -56.25], [155.25, -56.15], [155.0, -56.25], [154.75, -56.15], [154.5, -56.25], [153.97, -56.03], [153.82, -55.68], [153.47, -55.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.245703175054075}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.358667663662579}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.404127522591068, 6.754943227834701, 6.796315324495197]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.194611220418324, 7.4417814588296665, 7.336181514679197]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.877716666060449, 2.1133900131780226, 2.084896311749266]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.245703175054075, 2.3998900442477407, 2.4394058442873074]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.1016015750945325, 1.5571234579760307, 1.565721845689888]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.3798441180437755, 1.7611760581180456, 1.7525781458778176]}}