{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:25.325301", "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": "2024-Dec-15_to_2024-Dec-17_307.5_-28.5"}, "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": 2024120000392}, "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 15 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 17 2024"}, "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": 85630.4804604559}, "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", "Uruguay"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": -28.5}, "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": 307.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "307.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 305.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 309.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-55.18, -30.32], [-55.03, -29.97], [-54.62, -29.8], [-54.75, -29.5], [-54.53, -28.97], [-54.0, -28.75], [-53.7, -28.88], [-53.65, -28.75], [-53.68, -28.68], [-54.03, -28.53], [-54.18, -28.18], [-54.53, -28.03], [-54.75, -27.5], [-54.53, -26.97], [-54.0, -26.75], [-53.75, -26.85], [-53.5, -26.75], [-52.97, -26.97], [-52.82, -27.32], [-52.47, -27.47], [-52.32, -27.82], [-51.97, -27.97], [-51.75, -28.5], [-51.85, -28.75], [-51.75, -29.0], [-51.87, -29.3], [-51.75, -29.35], [-51.5, -29.25], [-51.25, -29.35], [-51.0, -29.25], [-50.47, -29.47], [-50.25, -30.0], [-50.47, -30.53], [-51.0, -30.75], [-51.25, -30.65], [-51.32, -30.68], [-51.47, -31.03], [-52.0, -31.25], [-52.25, -31.15], [-52.32, -31.18], [-52.35, -31.25], [-52.25, -31.5], [-52.47, -32.03], [-53.0, -32.25], [-53.25, -32.15], [-53.5, -32.25], [-53.75, -32.15], [-54.0, -32.25], [-54.25, -32.15], [-54.5, -32.25], [-54.75, -32.15], [-55.0, -32.25], [-55.53, -32.03], [-55.75, -31.5], [-55.65, -31.25], [-55.75, -31.0], [-55.53, -30.47], [-55.18, -30.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.75, -31.0], [-55.52999999999997, -30.47], [-55.18000000000001, -30.32], [-55.02999999999997, -29.97], [-54.620000000000005, -29.8], [-54.75, -29.5], [-54.52999999999997, -28.97], [-54.0, -28.75], [-53.69999999999999, -28.88], [-53.64999999999998, -28.75], [-53.68000000000001, -28.68], [-54.02999999999997, -28.53], [-54.18000000000001, -28.18], [-54.52999999999997, -28.03], [-54.75, -27.5], [-54.52999999999997, -26.97], [-54.0, -26.75], [-53.75, -26.85], [-53.5, -26.75], [-52.97000000000003, -26.97], [-52.81999999999999, -27.32], [-52.47000000000003, -27.47], [-52.31999999999999, -27.82], [-51.97000000000003, -27.97], [-51.75, -28.5], [-51.85000000000002, -28.75], [-51.75, -29.0], [-51.870000000000005, -29.3], [-51.75, -29.35], [-51.5, -29.25], [-51.25, -29.35], [-51.0, -29.25], [-50.47000000000003, -29.47], [-50.25, -30.0], [-50.47000000000003, -30.53], [-51.0, -30.75], [-51.25, -30.65], [-51.31999999999999, -30.68], [-51.47000000000003, -31.03], [-52.0, -31.25], [-52.25, -31.15], [-52.31999999999999, -31.18], [-52.35000000000002, -31.25], [-52.25, -31.5], [-52.47000000000003, -32.03], [-53.0, -32.25], [-53.25, -32.15], [-53.5, -32.25], [-53.75, -32.15], [-54.0, -32.25], [-54.25, -32.15], [-54.5, -32.25], [-54.75, -32.15], [-55.0, -32.25], [-55.52999999999997, -32.03], [-55.75, -31.5], [-55.64999999999998, -31.25], [-55.75, -31.0]]]]}, "2024-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.75, -31.0], [-55.52999999999997, -30.47], [-55.18000000000001, -30.32], [-55.02999999999997, -29.97], [-54.620000000000005, -29.8], [-54.75, -29.5], [-54.52999999999997, -28.97], [-54.0, -28.75], [-53.69999999999999, -28.88], [-53.64999999999998, -28.75], [-53.68000000000001, -28.68], [-54.02999999999997, -28.53], [-54.18000000000001, -28.18], [-54.52999999999997, -28.03], [-54.75, -27.5], [-54.52999999999997, -26.97], [-54.0, -26.75], [-53.75, -26.85], [-53.5, -26.75], [-52.97000000000003, -26.97], [-52.81999999999999, -27.32], [-52.47000000000003, -27.47], [-52.31999999999999, -27.82], [-51.97000000000003, -27.97], [-51.75, -28.5], [-51.85000000000002, -28.75], [-51.75, -29.0], [-51.870000000000005, -29.3], [-51.75, -29.35], [-51.5, -29.25], [-51.25, -29.35], [-51.0, -29.25], [-50.47000000000003, -29.47], [-50.25, -30.0], [-50.47000000000003, -30.53], [-51.0, -30.75], [-51.25, -30.65], [-51.31999999999999, -30.68], [-51.47000000000003, -31.03], [-52.0, -31.25], [-52.25, -31.15], [-52.31999999999999, -31.18], [-52.35000000000002, -31.25], [-52.25, -31.5], [-52.47000000000003, -32.03], [-53.0, -32.25], [-53.25, -32.15], [-53.5, -32.25], [-53.75, -32.15], [-54.0, -32.25], [-54.25, -32.15], [-54.5, -32.25], [-54.75, -32.15], [-55.0, -32.25], [-55.52999999999997, -32.03], [-55.75, -31.5], [-55.64999999999998, -31.25], [-55.75, -31.0]]]]}, "2024-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.75, -31.0], [-55.52999999999997, -30.47], [-55.18000000000001, -30.32], [-55.02999999999997, -29.97], [-54.620000000000005, -29.8], [-54.75, -29.5], [-54.52999999999997, -28.97], [-54.0, -28.75], [-53.69999999999999, -28.88], [-53.64999999999998, -28.75], [-53.68000000000001, -28.68], [-54.02999999999997, -28.53], [-54.18000000000001, -28.18], [-54.52999999999997, -28.03], [-54.75, -27.5], [-54.52999999999997, -26.97], [-54.0, -26.75], [-53.75, -26.85], [-53.5, -26.75], [-52.97000000000003, -26.97], [-52.81999999999999, -27.32], [-52.47000000000003, -27.47], [-52.31999999999999, -27.82], [-51.97000000000003, -27.97], [-51.75, -28.5], [-51.85000000000002, -28.75], [-51.75, -29.0], [-51.870000000000005, -29.3], [-51.75, -29.35], [-51.5, -29.25], [-51.25, -29.35], [-51.0, -29.25], [-50.47000000000003, -29.47], [-50.25, -30.0], 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"Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.132468159993493, 16.19751892089846, 18.271956380208337]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.324362108829572, -3.8094849357679603, -3.25579262511647]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.060965536372407, -5.217465170646278, -3.62730976234576]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3986307268840936, -1.682475722948825, -1.4221685467344158]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.738321182671355, -2.4325643182296597, -1.5628409698012493]}}