{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:13.043987", "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-Feb-12_to_2021-Feb-15_134.5_-25.5"}, "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": 2021020000467}, "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": "February 12 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 15 2021"}, "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": 58644.3827846738}, "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"]}, "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": -25.5}, "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": 134.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "134.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 132.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 136.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -24.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.35, -24.75], [132.25, -24.5], [132.47, -23.97], [133.0, -23.75], [133.5, -23.96], [134.0, -23.75], [134.25, -23.85], [134.5, -23.75], [135.03, -23.97], [135.18, -24.32], [135.25, -24.35], [135.5, -24.25], [136.03, -24.47], [136.25, -25.0], [136.15, -25.25], [136.18, -25.32], [136.25, -25.35], [136.5, -25.25], [137.03, -25.47], [137.25, -26.0], [137.03, -26.53], [136.68, -26.68], [136.53, -27.03], [136.0, -27.25], [135.47, -27.03], [135.32, -26.68], [135.25, -26.65], [135.0, -26.75], [134.75, -26.65], [134.5, -26.75], [133.97, -26.53], [133.82, -26.18], [133.75, -26.15], [133.5, -26.25], [133.25, -26.15], [133.0, -26.25], [132.47, -26.03], [132.25, -25.5], [132.35, -25.25], [132.25, -25.0], [132.35, -24.75]]]]}, "2021-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.35, -24.75], [132.25, -24.5], [132.47, -23.97], [133.0, -23.75], [133.5, -23.96], [134.0, -23.75], [134.25, -23.85], [134.5, -23.75], [135.03, -23.97], [135.18, -24.32], [135.25, -24.35], [135.5, -24.25], [136.03, -24.47], [136.25, -25.0], [136.15, -25.25], [136.18, -25.32], [136.25, -25.35], [136.5, -25.25], [137.03, -25.47], [137.25, -26.0], [137.03, -26.53], [136.68, -26.68], [136.53, -27.03], [136.0, -27.25], [135.47, -27.03], [135.32, -26.68], [135.25, -26.65], [135.0, -26.75], [134.75, -26.65], [134.5, -26.75], [133.97, -26.53], [133.82, -26.18], [133.75, -26.15], [133.5, -26.25], [133.25, -26.15], [133.0, -26.25], [132.47, -26.03], [132.25, -25.5], [132.35, -25.25], [132.25, -25.0], [132.35, -24.75]]]]}, "2021-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.35, -24.75], [132.25, -24.5], [132.47, -23.97], [133.0, -23.75], [133.5, -23.96], [134.0, -23.75], [134.25, -23.85], [134.5, -23.75], [135.03, -23.97], [135.18, -24.32], [135.25, -24.35], [135.5, -24.25], [136.03, -24.47], [136.25, -25.0], [136.15, -25.25], [136.18, -25.32], [136.25, -25.35], [136.5, -25.25], [137.03, -25.47], [137.25, -26.0], [137.03, -26.53], [136.68, -26.68], [136.53, -27.03], [136.0, -27.25], [135.47, -27.03], [135.32, -26.68], [135.25, -26.65], [135.0, -26.75], [134.75, -26.65], [134.5, -26.75], [133.97, -26.53], [133.82, -26.18], [133.75, -26.15], [133.5, -26.25], [133.25, -26.15], [133.0, -26.25], [132.47, -26.03], [132.25, -25.5], [132.35, -25.25], [132.25, -25.0], [132.35, -24.75]]]]}, "2021-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.97, -26.53], [135.75, -26.0], [135.97, -25.47], [136.5, -25.25], [137.03, -25.47], [137.25, -26.0], [137.03, -26.53], [136.5, -26.75], [135.97, -26.53]]], [[[132.75, -25.0], [132.97, -24.47], [133.5, -24.25], [133.75, -24.35], [134.0, -24.25], [134.25, -24.35], [134.5, -24.25], [135.03, -24.47], [135.18, -24.82], [135.53, -24.97], [135.75, -25.5], [135.53, -26.03], [135.0, -26.25], [134.75, -26.15], [134.5, -26.25], [133.97, -26.03], [133.82, -25.68], [133.75, -25.65], [133.5, -25.75], [132.97, -25.53], [132.75, -25.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.386304106857324}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.718508544600796}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.974051721946637, 22.147078358659485, 25.036507195504328, 25.408047698470284]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.75167288389497, 21.007207875180995, 24.208899282371874, 25.00824301680774]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.690769802596812, -8.438523534209507, -5.483958846586861, -5.116465621033029]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.386304106857324, -8.998290068916106, -6.970969248761094, -5.383256595726209]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9319922661956956, -2.4407393795941865, -1.5791665205757244, -1.469662932758071]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.751142604696361, -2.613465993088802, -1.9249482408555656, -1.5269540972079771]}}