{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:21.896142", "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-Apr-20_to_2024-Apr-23_116.5_-21.0"}, "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": 2024040000419}, "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": "April 20 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 23 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": 81645.17744132859}, "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": -21.0}, "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": 116.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "116.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 116.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 119.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[116.68, -21.68], [116.53, -22.03], [116.0, -22.25], [115.47, -22.03], [115.25, -21.5], [115.35, -21.25], [115.25, -21.0], [115.47, -20.47], [115.82, -20.32], [115.97, -19.97], [116.38, -19.8], [116.25, -19.5], [116.35, -19.25], [116.25, -19.0], [116.35, -18.75], [116.25, -18.5], [116.47, -17.97], [117.0, -17.75], [117.25, -17.85], [117.32, -17.82], [117.47, -17.47], [118.0, -17.25], [118.25, -17.35], [118.5, -17.25], [118.75, -17.35], [119.0, -17.25], [119.25, -17.35], [119.5, -17.25], [120.03, -17.47], [120.25, -18.0], [120.15, -18.25], [120.25, -18.5], [120.03, -19.03], [119.5, -19.25], [119.25, -19.15], [119.18, -19.18], [119.15, -19.25], [119.18, -19.32], [119.53, -19.47], [119.75, -20.0], [119.53, -20.53], [119.0, -20.75], [118.75, -20.65], [118.5, -20.75], [118.25, -20.65], [118.18, -20.68], [118.03, -21.03], [117.5, -21.25], [117.25, -21.15], [117.18, -21.18], [117.03, -21.53], [116.68, -21.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.97, -20.47], [116.5, -20.25], [117.03, -20.47], [117.25, -21.0], [117.03, -21.53], [116.68, -21.68], [116.53, -22.03], [116.0, -22.25], [115.47, -22.03], [115.25, -21.5], [115.47, -20.97], [115.82, -20.82], [115.97, -20.47]]]]}, "2024-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.25, -21.0], [115.47, -20.47], [115.82, -20.32], [115.97, -19.97], [116.38, -19.8], [116.25, -19.5], [116.35, -19.25], [116.25, -19.0], [116.35, -18.75], [116.25, -18.5], [116.47, -17.97], [117.0, -17.75], [117.25, -17.85], [117.32, -17.82], [117.47, -17.47], [118.0, -17.25], [118.25, -17.35], [118.5, -17.25], [118.75, -17.35], [119.0, -17.25], [119.25, -17.35], [119.5, -17.25], [120.03, -17.47], [120.25, -18.0], [120.15, -18.25], [120.25, -18.5], [120.03, -19.03], [119.5, -19.25], [119.25, -19.15], [119.18, -19.18], [119.15, -19.25], [119.18, -19.32], [119.53, -19.47], [119.75, -20.0], [119.53, -20.53], [119.0, -20.75], [118.75, -20.65], [118.5, -20.75], [118.25, -20.65], [118.18, -20.68], [118.03, -21.03], [117.5, -21.25], [117.25, -21.15], [117.18, -21.18], [117.03, -21.53], [116.68, -21.68], [116.53, -22.03], [116.0, -22.25], [115.47, -22.03], [115.25, -21.5], [115.35, -21.25], [115.25, -21.0]]]]}, "2024-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.25, -21.0], [115.47, -20.47], [115.82, -20.32], [115.97, -19.97], [116.38, -19.8], [116.25, -19.5], [116.35, -19.25], [116.25, -19.0], [116.35, -18.75], [116.25, -18.5], [116.47, -17.97], [117.0, -17.75], [117.25, -17.85], [117.32, -17.82], [117.47, -17.47], [118.0, -17.25], [118.25, -17.35], [118.5, -17.25], [118.75, -17.35], [119.0, -17.25], [119.25, -17.35], [119.5, -17.25], [120.03, -17.47], [120.25, -18.0], [120.15, -18.25], [120.25, -18.5], [120.03, -19.03], [119.5, -19.25], [119.25, -19.15], [119.18, -19.18], [119.15, 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-20.0], [119.53, -20.53], [119.0, -20.75], [118.75, -20.65], [118.5, -20.75], [118.25, -20.65], [118.18, -20.68], [118.03, -21.03], [117.5, -21.25], [117.25, -21.15], [117.18, -21.18], [117.03, -21.53], [116.5, -21.75], [116.25, -21.65], [116.0, -21.75], [115.47, -21.53], [115.25, -21.0], [115.47, -20.47], [115.82, -20.32], [115.97, -19.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.748276484648784}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4607233822710903}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.575888914328004, 26.905653870703645, 26.738800578495557, 27.024600933768056]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.294033243807007, 24.35427708982263, 25.065796581314544, 25.642477711908953]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.642452805889775, -1.4322603922055188, -1.582824691382671, -1.2760814644738447]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8358427240786455, -3.748276484648784, -2.979429808299642, -2.3324031527221223]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.20186063055993, -1.2618048076501114, -1.4310064081413414, -1.2193482175287162]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3284655637644913, -1.7735241085054043, -1.7988106433179032, -1.4311609401560959]}}