{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:30.215771", "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-29_to_2022-May-03_300.0_-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": 2022040000984}, "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 29 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 50715.625241872985}, "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": ["Argentina"]}, "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": -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": 300.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "300.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 302.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -36.0}, "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": [[[[-58.0, -33.75], [-57.47, -33.97], [-57.25, -34.5], [-57.47, -35.03], [-57.87, -35.2], [-57.75, -35.5], [-57.97, -36.03], [-58.5, -36.25], [-58.75, -36.15], [-58.82, -36.18], [-58.97, -36.53], [-59.5, -36.75], [-59.75, -36.65], [-60.0, -36.75], [-60.53, -36.53], [-60.75, -36.0], [-60.65, -35.75], [-60.68, -35.68], [-61.03, -35.53], [-61.18, -35.18], [-61.53, -35.03], [-61.75, -34.5], [-61.65, -34.25], [-61.75, -34.0], [-61.53, -33.47], [-61.0, -33.25], [-60.75, -33.35], [-60.5, -33.25], [-60.25, -33.35], [-60.0, -33.25], [-59.47, -33.47], [-59.32, -33.82], [-59.25, -33.85], [-59.0, -33.75], [-58.75, -33.85], [-58.5, -33.75], [-58.25, -33.85], [-58.0, -33.75]]]]}}, "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": {"2022-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.75, -34.0], [-61.52999999999997, -33.47], [-61.0, -33.25], [-60.75, -33.35], [-60.5, -33.25], 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-33.47], [-59.31999999999999, -33.82], [-59.25, -33.85], [-59.0, -33.75], [-58.75, -33.85], [-58.5, -33.75], [-58.25, -33.85], [-58.0, -33.75], [-57.47000000000003, -33.97], [-57.25, -34.5], [-57.47000000000003, -35.03], [-57.870000000000005, -35.2], [-57.75, -35.5], [-57.97000000000003, -36.03], [-58.5, -36.25], [-58.75, -36.15], [-58.81999999999999, -36.18], [-58.97000000000003, -36.53], [-59.5, -36.75], [-59.75, -36.65], [-60.0, -36.75], [-60.52999999999997, -36.53], [-60.75, -36.0], [-60.64999999999998, -35.75], [-60.68000000000001, -35.68], [-61.02999999999997, -35.53], [-61.18000000000001, -35.18], [-61.52999999999997, -35.03], [-61.75, -34.5], [-61.64999999999998, -34.25], [-61.75, -34.0]]]]}, "2022-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.75, -34.0], [-61.52999999999997, -33.47], [-61.0, -33.25], [-60.75, -33.35], [-60.5, -33.25], [-60.25, -33.35], [-60.0, -33.25], [-59.47000000000003, -33.47], [-59.31999999999999, -33.82], [-59.25, -33.85], [-59.0, -33.75], [-58.75, -33.85], [-58.5, -33.75], [-58.25, -33.85], [-58.0, -33.75], [-57.47000000000003, -33.97], [-57.25, -34.5], [-57.47000000000003, -35.03], [-57.870000000000005, -35.2], [-57.75, -35.5], [-57.97000000000003, -36.03], [-58.5, -36.25], [-58.75, -36.15], [-58.81999999999999, -36.18], [-58.97000000000003, -36.53], [-59.5, -36.75], [-59.75, -36.65], [-60.0, -36.75], [-60.52999999999997, -36.53], [-60.75, -36.0], [-60.64999999999998, -35.75], [-60.68000000000001, -35.68], [-61.02999999999997, -35.53], [-61.18000000000001, -35.18], [-61.52999999999997, -35.03], [-61.75, -34.5], [-61.64999999999998, -34.25], [-61.75, -34.0]]]]}, "2022-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.52999999999997, -35.03], [-61.75, -34.5], [-61.52999999999997, -33.97], [-61.0, -33.75], [-60.75, -33.85], [-60.5, -33.75], [-60.25, -33.85], [-60.0, -33.75], [-59.47000000000003, -33.97], [-59.31999999999999, -34.32], [-59.25, -34.35], [-59.0, -34.25], 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"evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.307111884475887, 6.766736354283296, 9.585933681259121, 9.217780104311089, 8.532402334614574]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.05092212578503, -6.569394106715629, -4.4587455109047935, -4.554701875470719, -4.97435048501835]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.890404236153813, -7.4472393916097985, -4.888754262565271, -4.980753395027875, -5.577766144357838]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.24902522429612, -2.1038951694672465, -1.4512024379815587, -1.5041697268837901, -1.6159022192810115]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5056837085798236, -2.373010579863808, -1.5233823993310764, -1.580822389267485, -1.8290228407356037]}}