{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:24.754991", "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-Apr-16_to_2022-Apr-18_309.5_-18.5"}, "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": 2022040000529}, "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 16 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 18 2022"}, "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": 105393.11029033273}, "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"]}, "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": []}, "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": -18.5}, "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": 309.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "309.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 307.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 309.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-53.75, -18.5], [-53.65, -18.25], [-53.75, -18.0], [-53.53, -17.47], [-53.18, -17.32], [-53.03, -16.97], [-52.5, -16.75], [-52.25, -16.85], [-52.0, -16.75], [-51.75, -16.85], [-51.68, -16.82], [-51.53, -16.47], [-51.0, -16.25], [-50.75, -16.35], [-50.5, -16.25], [-49.97, -16.47], [-49.75, -17.0], [-49.85, -17.25], [-49.75, -17.5], [-49.85, -17.75], [-49.75, -18.0], [-49.85, -18.25], [-49.75, -18.5], [-49.85, -18.75], [-49.75, -19.0], [-49.97, -19.53], [-50.32, -19.68], [-50.35, -19.75], [-50.25, -20.0], [-50.47, -20.53], [-50.82, -20.68], [-50.97, -21.03], [-51.5, -21.25], [-51.75, -21.15], [-52.0, -21.25], [-52.53, -21.03], [-52.68, -20.68], [-53.03, -20.53], [-53.18, -20.18], [-53.53, -20.03], [-53.75, -19.5], [-53.65, -19.25], [-53.75, -19.0], [-53.65, -18.75], [-53.75, -18.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "South-American-Monsoon", "S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.75, -19.0], [-53.64999999999998, -18.75], [-53.75, -18.5], [-53.64999999999998, -18.25], [-53.75, -18.0], [-53.52999999999997, -17.47], [-53.18000000000001, -17.32], [-53.02999999999997, -16.97], [-52.5, -16.75], [-52.25, -16.85], [-52.0, -16.75], [-51.75, -16.85], [-51.68000000000001, -16.82], [-51.52999999999997, -16.47], [-51.0, -16.25], [-50.75, -16.35], [-50.5, -16.25], [-49.97000000000003, -16.47], [-49.75, -17.0], [-49.85000000000002, -17.25], [-49.75, -17.5], [-49.85000000000002, -17.75], [-49.75, -18.0], [-49.85000000000002, -18.25], [-49.75, -18.5], [-49.85000000000002, -18.75], [-49.75, -19.0], [-49.97000000000003, -19.53], [-50.31999999999999, -19.68], [-50.35000000000002, -19.75], [-50.25, -20.0], [-50.47000000000003, -20.53], [-50.81999999999999, -20.68], [-50.97000000000003, -21.03], [-51.5, -21.25], [-51.75, -21.15], [-52.0, -21.25], [-52.52999999999997, -21.03], [-52.68000000000001, -20.68], [-53.02999999999997, -20.53], [-53.18000000000001, -20.18], [-53.52999999999997, -20.03], [-53.75, -19.5], [-53.64999999999998, -19.25], [-53.75, -19.0]]]]}, "2022-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.75, -19.0], [-53.64999999999998, -18.75], [-53.75, -18.5], [-53.64999999999998, -18.25], [-53.75, -18.0], [-53.52999999999997, -17.47], [-53.18000000000001, -17.32], [-53.02999999999997, -16.97], [-52.5, -16.75], [-52.25, -16.85], [-52.0, -16.75], [-51.75, -16.85], [-51.68000000000001, -16.82], [-51.52999999999997, -16.47], [-51.0, -16.25], [-50.75, -16.35], [-50.5, -16.25], [-49.97000000000003, -16.47], [-49.75, -17.0], [-49.85000000000002, -17.25], [-49.75, -17.5], [-49.85000000000002, -17.75], [-49.75, -18.0], [-49.85000000000002, -18.25], [-49.75, -18.5], [-49.85000000000002, -18.75], [-49.75, -19.0], [-49.97000000000003, -19.53], [-50.31999999999999, -19.68], [-50.35000000000002, -19.75], [-50.25, -20.0], [-50.47000000000003, -20.53], [-50.81999999999999, -20.68], [-50.97000000000003, -21.03], [-51.5, -21.25], [-51.75, -21.15], [-52.0, -21.25], [-52.52999999999997, -21.03], [-52.68000000000001, -20.68], [-53.02999999999997, -20.53], [-53.18000000000001, -20.18], [-53.52999999999997, -20.03], [-53.75, -19.5], [-53.64999999999998, -19.25], [-53.75, -19.0]]]]}, "2022-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.75, -19.0], [-53.64999999999998, -18.75], [-53.75, -18.5], [-53.64999999999998, -18.25], [-53.75, -18.0], [-53.52999999999997, -17.47], [-53.18000000000001, -17.32], [-53.02999999999997, -16.97], [-52.5, -16.75], [-52.25, -16.85], [-52.0, -16.75], [-51.75, -16.85], [-51.68000000000001, -16.82], [-51.52999999999997, -16.47], [-51.0, -16.25], [-50.75, -16.35], [-50.5, -16.25], [-49.97000000000003, -16.47], [-49.75, -17.0], [-49.85000000000002, -17.25], [-49.75, -17.5], [-49.85000000000002, -17.75], [-49.75, -18.0], [-49.85000000000002, -18.25], [-49.75, -18.5], [-49.85000000000002, 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"description": "The daily evolution of maximum t2m.", "value": [19.947914678853977, 18.87896694853754, 20.225026505994094]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.169219610645464, -4.200752230181859, -2.7322922966285055]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.239288220456785, -5.422548310803677, -3.5677606843972285]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6616237013706463, -2.240209507470298, -1.4579019238653157]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.126774163570336, -2.731949550855973, -1.844852460713542]}}