{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:51:34.971818", "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-22_138.5_-19.0"}, "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": 2024040000379}, "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 22 2024"}, "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": "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": 81836.34958872938}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia", "N.Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Australia"]}, "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": -19.0}, "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": 138.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "138.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 136.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 141.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.25}, "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": [[[[135.97, -20.03], [135.75, -19.5], [135.97, -18.97], [136.5, -18.75], [136.75, -18.85], [137.0, -18.75], [137.25, -18.85], [137.5, -18.75], [137.75, -18.85], [137.82, -18.82], [137.97, -18.47], [138.32, -18.32], [138.35, -18.25], [138.32, -18.18], [138.25, -18.15], [138.0, -18.25], [137.47, -18.03], [137.25, -17.5], [137.47, -16.97], [138.0, -16.75], [138.25, -16.85], [138.5, -16.75], [139.03, -16.97], [139.18, -17.32], [139.5, -17.46], [140.0, -17.25], [140.25, -17.35], [140.5, -17.25], [141.03, -17.47], [141.18, -17.82], [141.25, -17.85], [141.5, -17.75], [142.03, -17.97], [142.25, -18.5], [142.15, -18.75], [142.25, -19.0], [142.15, -19.25], [142.25, -19.5], [142.03, -20.03], [141.68, -20.18], [141.53, -20.53], [141.18, -20.68], [141.03, -21.03], [140.5, -21.25], [139.97, -21.03], [139.82, -20.68], [139.47, -20.53], [139.25, -20.0], [139.46, -19.5], [139.32, -19.18], [139.25, -19.15], [139.18, -19.18], [139.15, -19.25], [139.25, -19.5], [139.03, -20.03], [138.5, -20.25], [138.25, -20.15], [138.0, -20.25], [137.75, -20.15], [137.5, -20.25], [137.25, -20.15], [137.0, -20.25], [136.75, -20.15], [136.5, -20.25], [135.97, -20.03]]]]}, "2024-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.97, -20.03], [135.75, -19.5], [135.97, -18.97], [136.5, -18.75], [136.75, -18.85], [137.0, -18.75], [137.25, -18.85], [137.5, -18.75], [137.75, -18.85], [137.82, -18.82], [137.97, -18.47], [138.32, -18.32], [138.35, -18.25], [138.32, -18.18], [138.25, -18.15], [138.0, -18.25], [137.47, -18.03], [137.25, -17.5], [137.47, -16.97], [138.0, -16.75], [138.25, -16.85], [138.5, -16.75], [139.03, -16.97], [139.18, -17.32], [139.5, -17.46], [140.0, -17.25], [140.25, -17.35], [140.5, -17.25], [141.03, -17.47], [141.18, -17.82], [141.25, -17.85], [141.5, -17.75], [142.03, -17.97], [142.25, -18.5], [142.15, -18.75], [142.25, -19.0], [142.15, -19.25], [142.25, -19.5], [142.03, -20.03], [141.68, -20.18], [141.53, -20.53], [141.18, -20.68], [141.03, -21.03], [140.5, -21.25], [139.97, -21.03], [139.82, -20.68], [139.47, -20.53], [139.25, -20.0], [139.46, -19.5], [139.32, -19.18], [139.25, -19.15], [139.18, -19.18], [139.15, -19.25], [139.25, -19.5], [139.03, -20.03], [138.5, -20.25], [138.25, -20.15], [138.0, -20.25], [137.75, -20.15], [137.5, -20.25], [137.25, -20.15], [137.0, -20.25], [136.75, -20.15], [136.5, -20.25], [135.97, -20.03]]]]}, "2024-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.97, -20.03], [135.75, -19.5], [135.97, -18.97], [136.5, -18.75], [136.75, -18.85], [137.0, -18.75], [137.25, -18.85], [137.5, -18.75], [137.75, -18.85], [137.82, -18.82], [137.97, -18.47], [138.32, -18.32], [138.35, -18.25], [138.32, -18.18], [138.25, -18.15], [138.0, -18.25], [137.47, -18.03], [137.25, -17.5], [137.47, -16.97], [138.0, -16.75], [138.25, -16.85], [138.5, -16.75], [139.03, -16.97], [139.18, -17.32], [139.5, -17.46], [140.0, -17.25], [140.25, -17.35], [140.5, -17.25], [141.03, -17.47], [141.18, -17.82], [141.25, -17.85], [141.5, -17.75], [142.03, -17.97], [142.25, -18.5], 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22.956762494510258]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.39336903586502, 20.281842254391393, 21.01534712085669]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.319535557553952, -4.785926044661333, -3.711802726664666]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.168592952955521, -5.641521763284516, -4.436904645263667]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6770643165750545, -2.3681773670723447, -1.766845174945476]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.886960103917473, -2.6456072195788662, -2.1997789949906768]}}