{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:13.602346", "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-Mar-05_to_2022-Mar-10_305.0_4.0"}, "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": 2022030000171}, "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": "March 05 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 10 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 67849.82436031713}, "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": ["French Guiana", "Suriname"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": 4.0}, "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": 305.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.0\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": 306.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.25, 4.5], [-58.03, 5.03], [-57.5, 5.25], [-56.97, 5.03], [-56.82, 4.68], [-56.7, 4.62], [-56.53, 5.03], [-56.0, 5.25], [-55.75, 5.15], [-55.5, 5.25], [-55.25, 5.15], [-55.0, 5.25], [-54.75, 5.15], [-54.5, 5.25], [-54.25, 5.15], [-54.0, 5.25], [-53.47, 5.03], [-53.25, 4.5], [-53.47, 3.97], [-53.82, 3.82], [-53.97, 3.47], [-54.32, 3.32], [-54.47, 2.97], [-55.0, 2.75], [-55.25, 2.85], [-55.5, 2.75], [-55.75, 2.85], [-56.0, 2.75], [-56.53, 2.97], [-56.7, 3.38], [-57.0, 3.25], [-57.53, 3.47], [-57.68, 3.82], [-58.03, 3.97], [-58.25, 4.5]]]]}, "2022-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.25, 4.5], [-58.03, 5.03], [-57.5, 5.25], [-56.97, 5.03], [-56.82, 4.68], [-56.7, 4.62], [-56.53, 5.03], [-56.0, 5.25], [-55.75, 5.15], [-55.5, 5.25], [-55.25, 5.15], [-55.0, 5.25], [-54.75, 5.15], [-54.5, 5.25], [-54.25, 5.15], [-54.0, 5.25], [-53.47, 5.03], [-53.25, 4.5], [-53.47, 3.97], [-53.82, 3.82], [-53.97, 3.47], [-54.32, 3.32], [-54.47, 2.97], [-55.0, 2.75], [-55.25, 2.85], [-55.5, 2.75], [-55.75, 2.85], [-56.0, 2.75], [-56.53, 2.97], [-56.7, 3.38], [-57.0, 3.25], [-57.53, 3.47], [-57.68, 3.82], [-58.03, 3.97], [-58.25, 4.5]]]]}, "2022-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.25, 4.5], [-58.03, 5.03], [-57.5, 5.25], [-56.97, 5.03], [-56.82, 4.68], [-56.7, 4.62], [-56.53, 5.03], [-56.0, 5.25], [-55.75, 5.15], [-55.5, 5.25], [-55.25, 5.15], [-55.0, 5.25], [-54.75, 5.15], [-54.5, 5.25], [-54.25, 5.15], [-54.0, 5.25], [-53.47, 5.03], [-53.25, 4.5], [-53.47, 3.97], [-53.82, 3.82], [-53.97, 3.47], [-54.32, 3.32], [-54.47, 2.97], [-55.0, 2.75], [-55.25, 2.85], [-55.5, 2.75], [-55.75, 2.85], [-56.0, 2.75], [-56.53, 2.97], [-56.7, 3.38], [-57.0, 3.25], [-57.53, 3.47], [-57.68, 3.82], [-58.03, 3.97], [-58.25, 4.5]]]]}, "2022-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.15, 4.25], [-58.25, 4.5], [-58.03, 5.03], [-57.5, 5.25], [-56.97, 5.03], [-56.82, 4.68], [-56.7, 4.62], [-56.53, 5.03], [-56.0, 5.25], [-55.75, 5.15], [-55.5, 5.25], [-55.25, 5.15], [-55.0, 5.25], [-54.75, 5.15], [-54.5, 5.25], [-53.97, 5.03], [-53.75, 4.5], [-53.85, 4.25], [-53.75, 4.0], [-53.97, 3.47], [-54.32, 3.32], [-54.47, 2.97], [-54.82, 2.82], [-54.97, 2.47], [-55.5, 2.25], [-55.75, 2.35], [-56.0, 2.25], [-56.25, 2.35], [-56.5, 2.25], [-56.75, 2.35], [-57.0, 2.25], [-57.53, 2.47], [-57.68, 2.82], [-58.03, 2.97], [-58.25, 3.5], [-58.15, 3.75], [-58.25, 4.0], [-58.15, 4.25]]]]}, "2022-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.15, 4.25], [-58.25, 4.5], [-58.03, 5.03], [-57.5, 5.25], [-56.97, 5.03], [-56.82, 4.68], [-56.5, 4.54], [-56.18, 4.68], [-56.03, 5.03], [-55.5, 5.25], [-55.25, 5.15], [-55.0, 5.25], [-54.47, 5.03], [-54.32, 4.68], [-53.97, 4.53], [-53.75, 4.0], [-53.97, 3.47], [-54.32, 3.32], [-54.47, 2.97], [-54.82, 2.82], [-54.97, 2.47], [-55.5, 2.25], [-55.75, 2.35], [-56.0, 2.25], [-56.25, 2.35], [-56.5, 2.25], [-56.75, 2.35], [-57.0, 2.25], [-57.53, 2.47], [-57.68, 2.82], [-58.03, 2.97], [-58.25, 3.5], [-58.15, 3.75], [-58.25, 4.0], [-58.15, 4.25]]]]}, "2022-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.03, 4.53], [-57.5, 4.75], [-56.97, 4.53], [-56.82, 4.18], [-56.75, 4.15], [-56.5, 4.25], [-56.25, 4.15], [-56.18, 4.18], [-56.03, 4.53], [-55.5, 4.75], [-55.25, 4.65], [-55.0, 4.75], [-54.47, 4.53], [-54.25, 4.0], [-54.35, 3.75], [-54.25, 3.5], [-54.47, 2.97], [-54.82, 2.82], [-54.97, 2.47], [-55.5, 2.25], [-55.75, 2.35], [-56.0, 2.25], [-56.25, 2.35], [-56.5, 2.25], [-56.75, 2.35], [-57.0, 2.25], [-57.53, 2.47], [-57.68, 2.82], [-58.03, 2.97], [-58.25, 3.5], [-58.15, 3.75], [-58.25, 4.0], [-58.03, 4.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.30550816425864}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5802904560195459}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.905167127547827, 23.543711797453966, 24.056758984765167, 23.95984620866608, 23.963684574720787, 23.834096259742637]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.214271845301994, 23.015770455720997, 23.707421530647196, 23.277194105254523, 23.405366466615135, 22.97760796397847]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5786937009193147, -1.9533777096138019, -1.452023245895926, -1.4962042829106963, -1.5037828602609842, -1.566007988135919]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8290466958906109, -2.30550816425864, -1.7811516740669617, -2.0256671602995766, -1.8827877826895474, -2.175364187055493]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8729141444476676, -2.3001610057083206, -1.7100720762611716, -1.7413386229201937, -1.7544941543079096, -1.82319995341795]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.160608710218656, -2.709713835658227, -2.051990140346502, -2.1042602411880162, -2.00705273616468, -2.5952106717321417]}}