{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:52.023819", "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-18_to_2023-Apr-20_306.5_-32.5"}, "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": 2023040000638}, "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 18 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 20 2023"}, "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": 54687.19997646291}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": -32.5}, "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": 306.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 302.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 306.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -33.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.25, -32.0], [-58.03, -31.47], [-57.5, -31.25], [-57.25, -31.35], [-57.0, -31.25], [-56.75, -31.35], [-56.5, -31.25], [-56.25, -31.35], [-56.0, -31.25], [-55.75, -31.35], [-55.5, -31.25], [-54.97, -31.47], [-54.82, -31.82], [-54.75, -31.85], [-54.5, -31.75], [-54.25, -31.85], [-54.0, -31.75], [-53.75, -31.85], [-53.5, -31.75], [-52.97, -31.97], [-52.75, -32.5], [-52.97, -33.03], [-53.32, -33.18], [-53.47, -33.53], [-54.0, -33.75], [-54.25, -33.65], [-54.5, -33.75], [-54.75, -33.65], [-55.0, -33.75], [-55.25, -33.65], [-55.5, -33.75], [-55.75, -33.65], [-56.0, -33.75], [-56.25, -33.65], [-56.32, -33.68], [-56.47, -34.03], [-57.0, -34.25], [-57.53, -34.03], [-57.75, -33.5], [-57.65, -33.25], [-57.75, -33.0], [-57.65, -32.75], [-57.68, -32.68], [-58.03, -32.53], [-58.25, -32.0]]]]}, "2023-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.25, -32.0], [-58.03, -31.47], [-57.5, -31.25], [-57.25, -31.35], [-57.0, -31.25], [-56.75, -31.35], [-56.5, -31.25], [-56.25, -31.35], [-56.0, -31.25], [-55.75, -31.35], [-55.5, -31.25], [-54.97, -31.47], [-54.82, -31.82], [-54.75, -31.85], [-54.5, -31.75], [-54.25, -31.85], [-54.0, -31.75], [-53.75, -31.85], [-53.5, -31.75], [-52.97, -31.97], [-52.75, -32.5], [-52.97, -33.03], [-53.32, -33.18], [-53.47, -33.53], [-54.0, -33.75], [-54.25, -33.65], [-54.5, -33.75], [-54.75, -33.65], [-55.0, -33.75], [-55.25, -33.65], [-55.5, -33.75], [-55.75, -33.65], [-56.0, -33.75], [-56.25, -33.65], [-56.32, -33.68], [-56.47, -34.03], [-57.0, -34.25], [-57.53, -34.03], [-57.75, -33.5], [-57.65, -33.25], [-57.75, -33.0], [-57.65, -32.75], [-57.68, -32.68], [-58.03, -32.53], [-58.25, -32.0]]]]}, "2023-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.25, -32.0], [-58.03, -31.47], [-57.5, -31.25], [-57.25, -31.35], [-57.0, -31.25], [-56.75, -31.35], [-56.5, -31.25], [-56.25, -31.35], [-56.0, -31.25], [-55.75, -31.35], [-55.5, -31.25], [-54.97, -31.47], [-54.82, -31.82], [-54.75, -31.85], [-54.5, -31.75], [-54.25, -31.85], [-54.0, -31.75], [-53.75, -31.85], [-53.5, -31.75], [-52.97, -31.97], [-52.75, -32.5], [-52.97, -33.03], [-53.32, -33.18], [-53.47, -33.53], [-54.0, -33.75], [-54.25, -33.65], [-54.5, -33.75], [-54.75, -33.65], [-55.0, -33.75], [-55.25, -33.65], [-55.5, -33.75], [-55.75, -33.65], [-56.0, -33.75], [-56.25, -33.65], [-56.32, -33.68], [-56.47, -34.03], [-57.0, -34.25], [-57.53, -34.03], [-57.75, -33.5], [-57.65, -33.25], [-57.75, -33.0], [-57.65, -32.75], [-57.68, -32.68], [-58.03, -32.53], [-58.25, -32.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.735539125982655}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.840776522516014}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.066097383918873, 12.568746674094825, 12.656638990686929]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.132782244671091, 11.498364885645799, 12.192212787601648]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.683033584716045, -5.037374786470231, -4.801921196361767]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.113256864273978, -5.735539125982655, -5.292488527117769]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5555221251847162, -1.6599433404533148, -1.5408671905246907]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7008893448745015, -1.9361210932687098, -1.6500292344065952]}}