{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:16.818184", "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-22_to_2021-Feb-25_138.0_-31.5"}, "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": 2021020000854}, "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 22 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 25 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": 62233.84334346828}, "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": ["S.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": ["Great Australian Bight"]}, "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": -31.5}, "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": 138.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "138.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 135.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 138.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.75, -34.0], [135.97, -33.47], [136.38, -33.3], [136.25, -33.0], [136.35, -32.75], [136.25, -32.5], [136.47, -31.97], [136.88, -31.8], [136.75, -31.5], [136.85, -31.25], [136.75, -31.0], [136.97, -30.47], [137.32, -30.32], [137.47, -29.97], [138.0, -29.75], [138.53, -29.97], [138.75, -30.5], [138.54, -31.0], [138.75, -31.5], [138.53, -32.03], [138.0, -32.25], [137.75, -32.15], [137.63, -32.2], [137.75, -32.5], [137.65, -32.75], [137.75, -33.0], [137.54, -33.5], [137.75, -34.0], [137.53, -34.53], [137.18, -34.68], [137.15, -34.75], [137.25, -35.0], [137.03, -35.53], [136.5, -35.75], [136.25, -35.65], [136.0, -35.75], [135.47, -35.53], [135.25, -35.0], [135.47, -34.47], [135.82, -34.32], [135.85, -34.25], [135.75, -34.0]]]]}, "2021-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.75, -34.0], [135.85, -33.75], [135.75, -33.5], [135.97, -32.97], [136.32, -32.82], [136.35, -32.75], [136.25, -32.5], [136.35, -32.25], [136.25, -32.0], [136.47, -31.47], [136.82, -31.32], [136.85, -31.25], [136.75, -31.0], [136.97, -30.47], [137.32, -30.32], [137.47, -29.97], [138.0, -29.75], [138.53, -29.97], [138.75, -30.5], [138.54, -31.0], [138.75, -31.5], [138.65, -31.75], [138.75, -32.0], [138.65, -32.25], [138.75, -32.5], [138.65, -32.75], [138.68, -32.82], [139.03, -32.97], [139.25, -33.5], [139.03, -34.03], [138.5, -34.25], [138.25, -34.15], [138.18, -34.18], [138.03, -34.53], [137.5, -34.75], [137.25, -34.65], [137.18, -34.68], [137.15, -34.75], [137.25, -35.0], [137.03, -35.53], [136.5, -35.75], [136.25, -35.65], [136.0, -35.75], [135.47, -35.53], [135.25, -35.0], [135.47, -34.47], [135.82, -34.32], [135.85, -34.25], [135.75, -34.0]]]]}, "2021-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.75, -34.0], [135.85, -33.75], [135.75, -33.5], [135.97, -32.97], [136.32, -32.82], [136.35, -32.75], [136.25, -32.5], [136.35, -32.25], [136.25, -32.0], [136.47, -31.47], [136.82, -31.32], [136.85, -31.25], [136.75, -31.0], [136.97, -30.47], [137.32, -30.32], [137.47, -29.97], [138.0, -29.75], 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[139.03, -32.97], [139.25, -33.5], [139.03, -34.03], [138.5, -34.25], [138.25, -34.15], [138.18, -34.18], [138.03, -34.53], [137.5, -34.75], [137.0, -34.54], [136.5, -34.75], [135.97, -34.53], [135.75, -34.0], [135.85, -33.75], [135.75, -33.5], [135.97, -32.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.7499540423283975}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.993783551474029}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.28977825587441, 18.08081590880346, 18.325255360035555, 18.542245570407772]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.820166103982444, 15.425083178583407, 15.451247624156792, 16.328819066423932]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.111587403811722, -5.349951768625222, -5.049349445258632, -4.983924604908818]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.620891006099896, -6.7499540423283975, -6.367966005101778, -5.68540493921563]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2869452277489932, -1.4916713027475328, -1.4245634385747066, -1.324656644145322]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4631782661873804, -1.7059795787179375, -1.552298132459841, -1.4795545428532744]}}