{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:24.184249", "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": "2023-Apr-13_to_2023-Apr-16_306.0_-36.0"}, "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": 2023040000554}, "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 13 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 16 2023"}, "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": 204916.8356095058}, "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": ["Uruguay"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": ["Atlantic 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": -36.0}, "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": 306.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 304.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 311.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -38.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -34.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-56.65, -34.75], [-56.75, -34.5], [-56.53, -33.97], [-56.0, -33.75], [-55.75, -33.85], [-55.5, -33.75], [-55.25, -33.85], [-55.0, -33.75], [-54.75, -33.85], [-54.5, -33.75], [-54.0, -33.96], [-53.68, -33.82], [-53.53, -33.47], [-53.0, -33.25], [-52.47, -33.47], [-52.32, -33.82], [-51.97, -33.97], [-51.82, -34.32], [-51.75, -34.35], [-51.5, -34.25], [-51.25, -34.35], [-51.0, -34.25], [-50.5, -34.46], [-50.0, -34.25], [-49.75, -34.35], [-49.5, -34.25], [-49.25, -34.35], [-49.0, -34.25], [-48.75, -34.35], [-48.5, -34.25], [-47.97, -34.47], [-47.75, -35.0], [-47.85, -35.25], [-47.75, -35.5], [-47.97, -36.03], [-48.32, -36.18], [-48.47, -36.53], [-49.0, -36.75], [-49.25, -36.65], [-49.32, -36.68], [-49.47, -37.03], [-49.82, -37.18], [-49.97, -37.53], [-50.5, -37.75], [-50.75, -37.65], [-50.82, -37.68], [-50.97, -38.03], [-51.32, -38.18], [-51.47, -38.53], [-52.0, -38.75], [-52.25, -38.65], [-52.5, -38.75], [-52.75, -38.65], [-52.82, -38.68], [-52.97, -39.03], [-53.5, -39.25], [-54.03, -39.03], [-54.25, -38.5], [-54.15, -38.25], [-54.18, -38.18], [-54.53, -38.03], [-54.68, -37.68], [-54.75, -37.65], [-55.0, -37.75], [-55.25, -37.65], [-55.5, -37.75], [-56.03, -37.53], [-56.25, -37.0], [-56.12, -36.7], [-56.53, -36.53], [-56.75, -36.0], [-56.65, -35.75], [-56.75, -35.5], [-56.65, -35.25], [-56.75, -35.0], [-56.65, -34.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America", "S.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.75, -35.5], [-56.64999999999998, -35.25], [-56.75, -35.0], [-56.52999999999997, -34.47], [-56.0, -34.25], [-55.47000000000003, -34.47], [-55.31999999999999, -34.82], [-55.25, -34.85], [-55.0, -34.75], [-54.75, -34.85], [-54.68000000000001, -34.82], [-54.52999999999997, -34.47], [-54.18000000000001, -34.32], [-54.02999999999997, -33.97], [-53.68000000000001, -33.82], [-53.52999999999997, -33.47], [-53.0, 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[-56.64999999999998, -35.75], [-56.75, -35.5]]]]}, "2023-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.0, -35.25], [-56.52999999999997, -35.03], [-56.75, -34.5], [-56.52999999999997, -33.97], [-56.0, -33.75], [-55.75, -33.85], [-55.5, -33.75], [-55.25, -33.85], [-55.0, -33.75], [-54.75, -33.85], [-54.5, -33.75], [-53.97000000000003, -33.97], [-53.75, -34.5], [-53.97000000000003, -35.03], [-54.5, -35.25], [-54.75, -35.15], [-55.0, -35.25], [-55.25, -35.15], [-55.5, -35.25], [-55.75, -35.15], [-56.0, -35.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.938562055028456}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.357315478276439}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.895818573775841, 14.850831273624124, 15.229070189462448, 12.848105513411554]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.76601984105747, 11.870948674018052, 10.700034254989589, 12.065609509423211]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.8901490710119457, -3.8059178649695937, -3.309455145624703, -4.251848312084945]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.314129158942194, -5.146066059455393, -5.938562055028456, -4.471802968962663]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.774979167600003, -2.248739372416498, -1.8598025115916836, -1.4627118737194948]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.338146894737549, -3.06546889077396, -2.660048834342886, -1.5091757252987474]}}