{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:45.496263", "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": "2024-Mar-09_to_2024-Mar-12_120.0_-28.0"}, "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": 2024030000260}, "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": "March 09 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 12 2024"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 212121.16414998335}, "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": []}, "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": -28.0}, "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": 120.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "120.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 118.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -25.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[118.47, -25.47], [118.82, -25.32], [118.97, -24.97], [119.5, -24.75], [119.75, -24.85], [120.0, -24.75], [120.53, -24.97], [120.68, -25.32], [121.03, -25.47], [121.18, -25.82], [121.53, -25.97], [121.68, -26.32], [122.03, -26.47], [122.18, -26.82], [122.53, -26.97], [122.68, -27.32], [122.75, -27.35], [123.0, -27.25], [123.53, -27.47], [123.68, -27.82], [124.03, -27.97], [124.18, -28.32], [124.53, -28.47], [124.75, -29.0], [124.65, -29.25], [124.75, -29.5], [124.65, -29.75], [124.75, -30.0], [124.53, -30.53], [124.0, -30.75], [123.75, -30.65], [123.68, -30.68], [123.53, -31.03], [123.0, -31.25], [122.75, -31.15], [122.5, -31.25], [122.25, -31.15], [122.18, -31.18], [122.03, -31.53], [121.5, -31.75], [120.97, -31.53], [120.82, -31.18], [120.47, -31.03], [120.32, -30.68], [119.97, -30.53], [119.82, -30.18], [119.47, -30.03], [119.32, -29.68], [118.97, -29.53], [118.82, -29.18], [118.47, -29.03], [118.25, -28.5], [118.35, -28.25], [118.25, -28.0], [118.35, -27.75], [118.32, -27.68], [117.97, -27.53], [117.75, -27.0], [117.85, -26.75], [117.75, -26.5], [117.97, -25.97], [118.32, -25.82], [118.47, -25.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia", "S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.75, -26.5], [117.97, -25.97], [118.32, -25.82], [118.47, -25.47], [118.82, -25.32], [118.97, -24.97], [119.5, -24.75], [119.75, -24.85], [120.0, -24.75], [120.53, -24.97], [120.68, -25.32], [121.03, -25.47], [121.18, -25.82], [121.53, -25.97], [121.68, -26.32], [122.03, -26.47], [122.18, -26.82], [122.53, -26.97], [122.68, -27.32], [122.75, -27.35], [123.0, -27.25], [123.53, -27.47], [123.68, -27.82], [124.03, -27.97], [124.18, -28.32], [124.53, -28.47], [124.75, -29.0], [124.65, -29.25], [124.75, -29.5], [124.65, -29.75], [124.75, -30.0], [124.53, -30.53], [124.0, -30.75], [123.75, -30.65], [123.68, -30.68], [123.53, -31.03], 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-27.25], [120.53, -27.47], [120.75, -28.0], [120.53, -28.53], [120.0, -28.75], [119.47, -28.53], [119.25, -28.0], [119.47, -27.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.12360897784697}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.823623802661948}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.675894003741178, 19.591731334461087, 20.442542038416775, 22.117647770763483]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.178465922160115, 17.7191000921801, 18.456312935933, 22.117647770763483]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.80380193779412, -6.844067099311115, -5.847907036212867, -4.881059906743928]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.12360897784697, -8.112218808217904, -6.815688903645423, -4.881059906743928]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.038393463077912, -1.8362514673955626, -1.5804894901273652, -1.3375418103704149]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.560879604295891, -2.231926037068052, -1.8626679008630256, -1.3375418103704149]}}