{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:20.976803", "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-03_to_2021-Sep-05_298.0_8.0"}, "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": 2021090000209}, "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 03 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 05 2021"}, "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": 82392.63013579445}, "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": ["Venezuela, Bolivarian Republic of"]}, "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": ["Caribbean Sea"]}, "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": 8.0}, "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": 298.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 295.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 298.5}, "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": 10.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-65.03, 10.53], [-64.5, 10.75], [-64.25, 10.65], [-64.18, 10.68], [-64.03, 11.03], [-63.5, 11.25], [-63.25, 11.15], [-63.0, 11.25], [-62.47, 11.03], [-62.32, 10.68], [-62.25, 10.65], [-62.0, 10.75], [-61.47, 10.53], [-61.25, 10.0], [-61.35, 9.75], [-61.25, 9.5], [-61.35, 9.25], [-61.25, 9.0], [-61.35, 8.75], [-61.32, 8.68], [-60.97, 8.53], [-60.75, 8.0], [-60.85, 7.75], [-60.75, 7.5], [-60.97, 6.97], [-61.5, 6.75], [-61.75, 6.85], [-62.0, 6.75], [-62.53, 6.97], [-62.68, 7.32], [-63.03, 7.47], [-63.18, 7.82], [-63.25, 7.85], [-63.5, 7.75], [-64.03, 7.97], [-64.18, 8.32], [-64.53, 8.47], [-64.75, 9.0], [-64.65, 9.25], [-64.68, 9.32], [-65.03, 9.47], [-65.25, 10.0], [-65.03, 10.53]]]]}}, "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": {"2021-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.02999999999997, 9.47], [-65.25, 10.0], [-65.02999999999997, 10.53], [-64.5, 10.75], [-64.25, 10.65], [-64.18, 10.68], [-64.02999999999997, 11.03], [-63.5, 11.25], [-63.25, 11.15], [-63.0, 11.25], [-62.47000000000003, 11.03], [-62.31999999999999, 10.68], [-62.25, 10.65], [-62.0, 10.75], [-61.47000000000003, 10.53], [-61.25, 10.0], [-61.35000000000002, 9.75], [-61.25, 9.5], [-61.35000000000002, 9.25], [-61.25, 9.0], [-61.35000000000002, 8.75], [-61.31999999999999, 8.68], [-60.97000000000003, 8.53], [-60.75, 8.0], [-60.85000000000002, 7.75], [-60.75, 7.5], [-60.97000000000003, 6.97], [-61.5, 6.75], [-61.75, 6.85], [-62.0, 6.75], [-62.52999999999997, 6.97], [-62.68000000000001, 7.32], [-63.02999999999997, 7.47], [-63.18000000000001, 7.82], [-63.25, 7.85], [-63.5, 7.75], [-64.02999999999997, 7.97], [-64.18, 8.32], [-64.52999999999997, 8.47], [-64.75, 9.0], [-64.64999999999998, 9.25], [-64.68, 9.32], [-65.02999999999997, 9.47]]]]}, "2021-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.02999999999997, 9.47], [-65.25, 10.0], [-65.02999999999997, 10.53], [-64.5, 10.75], [-64.25, 10.65], [-64.18, 10.68], [-64.02999999999997, 11.03], [-63.5, 11.25], [-63.25, 11.15], [-63.0, 11.25], [-62.47000000000003, 11.03], [-62.31999999999999, 10.68], [-62.25, 10.65], [-62.0, 10.75], [-61.47000000000003, 10.53], [-61.25, 10.0], [-61.35000000000002, 9.75], [-61.25, 9.5], [-61.35000000000002, 9.25], [-61.25, 9.0], [-61.35000000000002, 8.75], [-61.31999999999999, 8.68], [-60.97000000000003, 8.53], [-60.75, 8.0], [-60.85000000000002, 7.75], [-60.75, 7.5], [-60.97000000000003, 6.97], [-61.5, 6.75], [-61.75, 6.85], [-62.0, 6.75], [-62.52999999999997, 6.97], [-62.68000000000001, 7.32], [-63.02999999999997, 7.47], [-63.18000000000001, 7.82], [-63.25, 7.85], [-63.5, 7.75], [-64.02999999999997, 7.97], [-64.18, 8.32], [-64.52999999999997, 8.47], [-64.75, 9.0], [-64.64999999999998, 9.25], [-64.68, 9.32], [-65.02999999999997, 9.47]]]]}, "2021-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.02999999999997, 9.47], [-65.25, 10.0], [-65.02999999999997, 10.53], [-64.5, 10.75], [-64.25, 10.65], [-64.18, 10.68], [-64.02999999999997, 11.03], [-63.5, 11.25], [-63.25, 11.15], [-63.0, 11.25], [-62.47000000000003, 11.03], [-62.31999999999999, 10.68], [-62.25, 10.65], [-62.0, 10.75], [-61.47000000000003, 10.53], [-61.25, 10.0], [-61.35000000000002, 9.75], [-61.25, 9.5], [-61.35000000000002, 9.25], [-61.25, 9.0], [-61.35000000000002, 8.75], [-61.31999999999999, 8.68], [-60.97000000000003, 8.53], [-60.75, 8.0], [-60.85000000000002, 7.75], [-60.75, 7.5], [-60.97000000000003, 6.97], [-61.5, 6.75], [-61.75, 6.85], [-62.0, 6.75], [-62.52999999999997, 6.97], [-62.68000000000001, 7.32], [-63.02999999999997, 7.47], [-63.18000000000001, 7.82], [-63.25, 7.85], [-63.5, 7.75], [-64.02999999999997, 7.97], [-64.18, 8.32], [-64.52999999999997, 8.47], [-64.75, 9.0], [-64.64999999999998, 9.25], [-64.68, 9.32], [-65.02999999999997, 9.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.412249253323239}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6069881512422008}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.251987470318966, 24.99918011288321, 25.402696152323756]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.064918092385938, 22.17428409264278, 21.81765243204842]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5664486650265965, -1.8275246823214177, -1.4269911063785883]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1965225558624866, -2.412249253323239, -1.8288727980123554]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7956038684618387, -2.08969754601674, -1.5904709145035123]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.397579643738281, -2.7952313958546724, -1.9447603774428892]}}