{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:28.713556", "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": "2021-Sep-17_to_2021-Sep-20_300.5_-2.0"}, "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": 2021090000601}, "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": "September 17 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 20 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 58694.35214116414}, "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": -2.0}, "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": 300.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "300.5\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": 303.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-61.0, -1.25], [-60.47, -1.47], [-60.32, -1.82], [-60.25, -1.85], [-60.18, -1.82], [-60.15, -1.75], [-60.25, -1.5], [-60.03, -0.97], [-59.68, -0.82], [-59.53, -0.47], [-59.18, -0.32], [-59.03, 0.03], [-58.5, 0.25], [-57.97, 0.03], [-57.82, -0.32], [-57.47, -0.47], [-57.32, -0.82], [-57.25, -0.85], [-57.0, -0.75], [-56.47, -0.97], [-56.25, -1.5], [-56.47, -2.03], [-57.0, -2.25], [-57.25, -2.15], [-57.5, -2.25], [-57.8, -2.12], [-57.8, -2.13], [-57.85, -2.25], [-57.75, -2.5], [-57.97, -3.03], [-58.5, -3.25], [-58.75, -3.15], [-59.0, -3.25], [-59.3, -3.12], [-59.35, -3.25], [-59.25, -3.5], [-59.47, -4.03], [-60.0, -4.25], [-60.53, -4.03], [-60.75, -3.5], [-60.65, -3.25], [-60.68, -3.18], [-61.03, -3.03], [-61.18, -2.68], [-61.53, -2.53], [-61.75, -2.0], [-61.53, -1.47], [-61.0, -1.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.52999999999997, -2.53], [-61.75, -2.0], [-61.52999999999997, -1.47], [-61.0, -1.25], [-60.47000000000003, -1.47], [-60.31999999999999, -1.82], [-60.25, -1.85], [-60.18000000000001, -1.82], [-60.14999999999998, -1.75], [-60.25, -1.5], [-60.02999999999997, -0.97], [-59.5, -0.75], [-58.97000000000003, -0.97], [-58.81999999999999, -1.32], [-58.75, -1.35], [-58.5, -1.25], [-57.97000000000003, -1.47], [-57.75, -2.0], [-57.97000000000003, -2.53], [-58.5, -2.75], [-58.75, -2.65], [-59.0, -2.75], [-59.25, -2.65], [-59.31999999999999, -2.68], [-59.35000000000002, -2.75], [-59.25, -3.0], [-59.35000000000002, -3.25], [-59.25, -3.5], [-59.47000000000003, -4.03], [-60.0, -4.25], [-60.52999999999997, -4.03], [-60.75, -3.5], [-60.64999999999998, -3.25], [-60.68000000000001, -3.18], [-61.02999999999997, -3.03], [-61.18000000000001, -2.68], [-61.52999999999997, -2.53]]]]}, "2021-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.52999999999997, -2.53], [-61.75, -2.0], [-61.52999999999997, -1.47], [-61.0, -1.25], [-60.47000000000003, -1.47], [-60.31999999999999, -1.82], [-60.25, -1.85], [-60.18000000000001, -1.82], [-60.14999999999998, -1.75], [-60.25, -1.5], [-60.02999999999997, -0.97], [-59.68000000000001, -0.82], [-59.52999999999997, -0.47], [-59.18000000000001, -0.32], [-59.02999999999997, 0.03], [-58.5, 0.25], [-57.97000000000003, 0.03], [-57.81999999999999, -0.32], [-57.47000000000003, -0.47], [-57.31999999999999, -0.82], [-57.25, -0.85], [-57.0, -0.75], [-56.47000000000003, -0.97], [-56.25, -1.5], [-56.47000000000003, -2.03], [-57.0, -2.25], [-57.25, -2.15], [-57.5, -2.25], [-57.80000000000001, -2.12], [-57.85000000000002, -2.25], [-57.75, -2.5], [-57.97000000000003, -3.03], [-58.5, -3.25], [-58.75, -3.15], [-59.0, -3.25], [-59.30000000000001, -3.12], [-59.35000000000002, -3.25], [-59.25, -3.5], [-59.47000000000003, -4.03], [-60.0, -4.25], [-60.52999999999997, -4.03], [-60.75, -3.5], [-60.64999999999998, -3.25], [-60.68000000000001, -3.18], [-61.02999999999997, -3.03], [-61.18000000000001, -2.68], [-61.52999999999997, -2.53]]]]}, "2021-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.52999999999997, -2.53], [-61.75, -2.0], [-61.52999999999997, -1.47], [-61.0, -1.25], [-60.47000000000003, -1.47], [-60.31999999999999, -1.82], [-60.25, -1.85], [-60.18000000000001, -1.82], [-60.14999999999998, -1.75], [-60.25, -1.5], [-60.02999999999997, -0.97], [-59.68000000000001, -0.82], [-59.52999999999997, -0.47], [-59.18000000000001, -0.32], [-59.02999999999997, 0.03], [-58.5, 0.25], [-57.97000000000003, 0.03], [-57.81999999999999, -0.32], [-57.47000000000003, -0.47], [-57.31999999999999, -0.82], [-57.25, -0.85], [-57.0, -0.75], [-56.47000000000003, -0.97], [-56.25, -1.5], [-56.47000000000003, -2.03], [-57.0, -2.25], [-57.25, -2.15], [-57.5, -2.25], [-57.80000000000001, -2.12], [-57.85000000000002, -2.25], [-57.75, -2.5], [-57.97000000000003, -3.03], [-58.5, -3.25], [-58.75, -3.15], 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"value": [-1.7651038658916984, -2.174957096513693, -2.045986597747787, -2.1194619924761144]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.0308262827384738, -2.4604489855901193, -2.650239339704058, -2.537088851933504]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3870598149801217, -1.571123701687522, -1.4262509028347585, -1.373142545732766]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7243939065103318, -1.8503389830963888, -1.7341859918554146, -1.5989266004138705]}}