{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:35.993038", "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-Nov-25_to_2022-Nov-28_289.0_-6.0"}, "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": 2022110001025}, "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": "November 25 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 28 2022"}, "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": 61401.394932014395}, "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": -6.0}, "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": 289.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "289.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 288.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-72.25, -5.5], [-72.03, -4.97], [-71.68, -4.82], [-71.53, -4.47], [-71.0, -4.25], [-70.47, -4.47], [-70.25, -5.0], [-70.37, -5.3], [-69.97, -5.47], [-69.82, -5.82], [-69.75, -5.85], [-69.5, -5.75], [-68.97, -5.97], [-68.75, -6.5], [-68.85, -6.75], [-68.75, -7.0], [-68.85, -7.25], [-68.75, -7.5], [-68.97, -8.03], [-69.5, -8.25], [-69.75, -8.15], [-70.0, -8.25], [-70.25, -8.15], [-70.5, -8.25], [-70.75, -8.15], [-71.0, -8.25], [-71.53, -8.03], [-71.68, -7.68], [-71.75, -7.65], [-72.0, -7.75], [-72.53, -7.53], [-72.75, -7.0], [-72.53, -6.47], [-72.18, -6.32], [-72.15, -6.25], [-72.25, -6.0], [-72.15, -5.75], [-72.25, -5.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America", "N.South-America", "South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.14999999999998, -6.25], [-72.25, -6.0], [-72.14999999999998, -5.75], [-72.25, -5.5], [-72.02999999999997, -4.97], [-71.68, -4.82], [-71.52999999999997, -4.47], [-71.0, -4.25], [-70.47000000000003, -4.47], [-70.25, -5.0], [-70.37, -5.3], [-69.97000000000003, -5.47], [-69.82, -5.82], [-69.75, -5.85], [-69.5, -5.75], [-68.97000000000003, -5.97], [-68.75, -6.5], [-68.85000000000002, -6.75], [-68.75, -7.0], [-68.85000000000002, -7.25], [-68.75, -7.5], [-68.97000000000003, -8.03], [-69.5, -8.25], [-69.75, -8.15], [-70.0, -8.25], [-70.25, -8.15], [-70.5, -8.25], [-70.75, -8.15], [-71.0, -8.25], [-71.52999999999997, -8.03], [-71.68, -7.68], [-71.75, -7.65], [-72.0, -7.75], [-72.52999999999997, -7.53], [-72.75, -7.0], [-72.52999999999997, -6.47], [-72.18, -6.32], [-72.14999999999998, -6.25]]]]}, "2022-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.14999999999998, -6.25], [-72.25, -6.0], [-72.14999999999998, -5.75], [-72.25, -5.5], [-72.02999999999997, -4.97], [-71.68, -4.82], [-71.52999999999997, -4.47], [-71.0, -4.25], [-70.47000000000003, -4.47], [-70.25, -5.0], [-70.37, -5.3], [-69.97000000000003, -5.47], [-69.82, -5.82], [-69.75, -5.85], [-69.5, -5.75], [-68.97000000000003, -5.97], [-68.75, -6.5], [-68.85000000000002, -6.75], [-68.75, -7.0], [-68.85000000000002, -7.25], [-68.75, -7.5], [-68.97000000000003, -8.03], [-69.5, -8.25], [-69.75, -8.15], [-70.0, -8.25], [-70.25, -8.15], [-70.5, -8.25], [-70.75, -8.15], [-71.0, -8.25], [-71.52999999999997, -8.03], [-71.68, -7.68], [-71.75, -7.65], [-72.0, -7.75], [-72.52999999999997, -7.53], [-72.75, -7.0], [-72.52999999999997, -6.47], [-72.18, -6.32], [-72.14999999999998, -6.25]]]]}, "2022-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.14999999999998, -6.25], [-72.25, -6.0], [-72.14999999999998, -5.75], [-72.25, -5.5], [-72.02999999999997, -4.97], [-71.68, -4.82], [-71.52999999999997, -4.47], [-71.0, -4.25], [-70.47000000000003, -4.47], [-70.25, -5.0], [-70.37, -5.3], [-69.97000000000003, -5.47], [-69.82, -5.82], [-69.75, -5.85], [-69.5, -5.75], [-68.97000000000003, -5.97], [-68.75, -6.5], [-68.85000000000002, -6.75], [-68.75, -7.0], [-68.85000000000002, -7.25], [-68.75, -7.5], [-68.97000000000003, -8.03], [-69.5, -8.25], [-69.75, -8.15], [-70.0, -8.25], [-70.25, -8.15], [-70.5, -8.25], [-70.75, -8.15], [-71.0, -8.25], [-71.52999999999997, -8.03], [-71.68, -7.68], [-71.75, -7.65], [-72.0, -7.75], [-72.52999999999997, -7.53], [-72.75, -7.0], [-72.52999999999997, -6.47], [-72.18, -6.32], [-72.14999999999998, -6.25]]]]}, "2022-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.0, -6.75], [-71.52999999999997, -6.53], [-71.75, -6.0], [-71.52999999999997, -5.47], [-71.0, -5.25], [-70.75, -5.35], [-70.5, -5.25], [-69.97000000000003, -5.47], [-69.82, -5.82], [-69.75, -5.85], [-69.5, -5.75], [-68.97000000000003, -5.97], [-68.75, -6.5], [-68.97000000000003, -7.03], [-69.5, -7.25], [-69.75, -7.15], [-70.0, -7.25], [-70.52999999999997, -7.03], [-70.68, -6.68], [-70.75, -6.65], [-71.0, -6.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.654213136590215}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6274192615729506}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.918642825950883, 24.438776546482984, 24.394049187939345, 24.770851179391457]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.289875430540917, 23.77830640447388, 23.957190155410785, 24.65063757469244]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.961617883390207, -1.461252305073242, -1.552148501472334, -1.163614735488295]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.654213136590215, -2.0075458628536467, -1.8761930982490753, -1.2195966789546446]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2334694457912905, -1.628183032424427, -1.79984397923145, -1.4041440754336485]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.9020387083387607, -2.2190855339192357, -2.202313207363017, -1.4458895647960701]}}