{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:33.435571", "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": "2022-Dec-24_to_2022-Dec-27_313.5_-16.0"}, "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": 2022120001026}, "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": "December 24 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 27 2022"}, "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": 50560.999824896906}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": -16.0}, "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": 313.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "313.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 312.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 314.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.53, -15.47], [-47.18, -15.32], [-47.03, -14.97], [-46.5, -14.75], [-46.25, -14.85], [-46.18, -14.82], [-46.15, -14.75], [-46.25, -14.5], [-46.03, -13.97], [-45.5, -13.75], [-44.97, -13.97], [-44.75, -14.5], [-44.85, -14.75], [-44.75, -15.0], [-44.85, -15.25], [-44.75, -15.5], [-44.97, -16.03], [-45.32, -16.18], [-45.47, -16.53], [-46.0, -16.75], [-46.25, -16.65], [-46.32, -16.68], [-46.47, -17.03], [-47.0, -17.25], [-47.53, -17.03], [-47.75, -16.5], [-47.65, -16.25], [-47.75, -16.0], [-47.53, -15.47]]]]}, "2022-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.03, -15.47], [-47.68, -15.32], [-47.53, -14.97], [-47.18, -14.82], [-47.03, -14.47], [-46.5, -14.25], [-46.25, -14.35], [-46.18, -14.32], [-46.03, -13.97], [-45.5, -13.75], [-44.97, -13.97], [-44.75, -14.5], [-44.85, -14.75], [-44.75, -15.0], [-44.85, -15.25], [-44.75, -15.5], [-44.97, -16.03], [-45.32, -16.18], [-45.35, -16.25], [-45.25, -16.5], [-45.47, -17.03], [-46.0, -17.25], [-46.25, -17.15], [-46.32, -17.18], [-46.47, -17.53], [-47.0, -17.75], [-47.53, -17.53], [-47.68, -17.18], [-48.03, -17.03], [-48.25, -16.5], [-48.15, -16.25], [-48.25, -16.0], [-48.03, -15.47]]]]}, "2022-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.03, -15.47], [-47.68, -15.32], [-47.53, -14.97], [-47.18, -14.82], [-47.03, -14.47], [-46.5, -14.25], [-46.25, -14.35], [-46.18, -14.32], [-46.03, -13.97], [-45.5, -13.75], [-44.97, -13.97], [-44.75, -14.5], [-44.85, -14.75], [-44.75, -15.0], [-44.85, -15.25], [-44.75, -15.5], [-44.97, -16.03], [-45.32, -16.18], [-45.35, -16.25], [-45.25, -16.5], [-45.47, -17.03], [-46.0, -17.25], [-46.25, -17.15], [-46.32, -17.18], [-46.47, -17.53], [-47.0, -17.75], [-47.53, -17.53], [-47.68, -17.18], [-48.03, -17.03], [-48.25, -16.5], [-48.15, -16.25], [-48.25, -16.0], [-48.03, -15.47]]]]}, "2022-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.03, -15.47], [-47.68, -15.32], [-47.53, -14.97], [-47.18, -14.82], [-47.03, -14.47], [-46.5, -14.25], [-46.25, -14.35], [-46.0, -14.25], [-45.47, -14.47], [-45.25, -15.0], [-45.35, -15.25], [-45.25, -15.5], [-45.35, -15.75], [-45.25, -16.0], [-45.35, -16.25], [-45.25, -16.5], [-45.47, -17.03], [-46.0, -17.25], [-46.25, -17.15], [-46.32, -17.18], [-46.47, -17.53], [-47.0, -17.75], [-47.53, -17.53], [-47.68, -17.18], [-48.03, -17.03], [-48.25, -16.5], [-48.15, -16.25], [-48.25, -16.0], [-48.03, -15.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.6574029861121744}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.5853748972629917}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.190595564623436, 21.52138506352685, 20.88805604129766, 21.704758962855294]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.66332192319993, 20.917301186255997, 19.89506881524727, 20.770603765578016]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.042324867658282, -2.5135583319702164, -3.1489042970093672, -2.33739861731522]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.2720403267069287, -3.133788428003186, -3.6574029861121744, -2.9411247137850864]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3043809874772272, -1.6304216640927767, -2.043579992431929, -1.5074093057532634]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4161173223367862, -1.960473855194448, -2.4034290966328515, -1.8528428913466588]}}