{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:21.197735", "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-04_to_2021-Sep-07_291.0_11.5"}, "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": 2021090000237}, "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 04 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 07 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": 51596.339502746785}, "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": 11.5}, "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": 291.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 289.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 291.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-70.75, 11.65], [-70.68, 11.68], [-70.65, 11.75], [-70.75, 12.0], [-70.53, 12.53], [-70.0, 12.75], [-69.47, 12.53], [-69.32, 12.18], [-69.25, 12.15], [-69.0, 12.25], [-68.47, 12.03], [-68.32, 11.68], [-67.97, 11.53], [-67.75, 11.0], [-67.85, 10.75], [-67.75, 10.5], [-67.97, 9.97], [-68.5, 9.75], [-68.75, 9.85], [-69.0, 9.75], [-69.25, 9.85], [-69.5, 9.75], [-69.75, 9.85], [-69.82, 9.82], [-69.97, 9.47], [-70.5, 9.25], [-71.03, 9.47], [-71.18, 9.82], [-71.53, 9.97], [-71.75, 10.5], [-71.65, 10.75], [-71.75, 11.0], [-71.53, 11.53], [-71.0, 11.75], [-70.75, 11.65]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.52999999999997, 11.47], [-70.75, 12.0], [-70.52999999999997, 12.53], [-70.0, 12.75], [-69.47000000000003, 12.53], [-69.32, 12.18], [-69.25, 12.15], [-69.0, 12.25], [-68.47000000000003, 12.03], [-68.32, 11.68], [-67.97000000000003, 11.53], [-67.75, 11.0], [-67.97000000000003, 10.47], [-68.5, 10.25], [-69.02999999999997, 10.47], [-69.18, 10.82], [-69.25, 10.85], [-69.5, 10.75], [-70.02999999999997, 10.97], [-70.18, 11.32], [-70.52999999999997, 11.47]]]]}, "2021-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.75, 11.0], [-71.52999999999997, 11.53], [-71.0, 11.75], [-70.75, 11.65], [-70.68, 11.68], [-70.64999999999998, 11.75], [-70.75, 12.0], [-70.52999999999997, 12.53], [-70.0, 12.75], [-69.47000000000003, 12.53], [-69.32, 12.18], [-69.25, 12.15], [-69.0, 12.25], [-68.47000000000003, 12.03], [-68.32, 11.68], [-67.97000000000003, 11.53], [-67.75, 11.0], [-67.85000000000002, 10.75], [-67.75, 10.5], [-67.97000000000003, 9.97], [-68.5, 9.75], [-68.75, 9.85], [-69.0, 9.75], [-69.25, 9.85], [-69.5, 9.75], [-69.75, 9.85], [-69.82, 9.82], [-69.97000000000003, 9.47], [-70.5, 9.25], [-71.02999999999997, 9.47], [-71.18, 9.82], [-71.52999999999997, 9.97], [-71.75, 10.5], [-71.64999999999998, 10.75], [-71.75, 11.0]]]]}, "2021-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.75, 11.0], [-71.52999999999997, 11.53], [-71.0, 11.75], [-70.75, 11.65], [-70.68, 11.68], [-70.64999999999998, 11.75], [-70.75, 12.0], [-70.52999999999997, 12.53], [-70.0, 12.75], [-69.47000000000003, 12.53], [-69.32, 12.18], [-69.25, 12.15], [-69.0, 12.25], [-68.47000000000003, 12.03], [-68.32, 11.68], [-67.97000000000003, 11.53], [-67.75, 11.0], [-67.85000000000002, 10.75], [-67.75, 10.5], [-67.97000000000003, 9.97], [-68.5, 9.75], [-68.75, 9.85], [-69.0, 9.75], [-69.25, 9.85], [-69.5, 9.75], [-69.75, 9.85], [-69.82, 9.82], [-69.97000000000003, 9.47], [-70.5, 9.25], [-71.02999999999997, 9.47], [-71.18, 9.82], [-71.52999999999997, 9.97], [-71.75, 10.5], [-71.64999999999998, 10.75], [-71.75, 11.0]]]]}, "2021-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.75, 11.0], [-71.52999999999997, 11.53], [-71.0, 11.75], [-70.75, 11.65], [-70.68, 11.68], [-70.52999999999997, 12.03], [-70.0, 12.25], [-69.5, 12.04], [-69.0, 12.25], [-68.47000000000003, 12.03], [-68.25, 11.5], [-68.35000000000002, 11.25], [-68.32, 11.18], [-67.97000000000003, 11.03], [-67.75, 10.5], [-67.97000000000003, 9.97], [-68.5, 9.75], [-68.75, 9.85], [-69.0, 9.75], [-69.25, 9.85], [-69.5, 9.75], [-69.75, 9.85], [-69.82, 9.82], [-69.97000000000003, 9.47], [-70.5, 9.25], [-71.02999999999997, 9.47], [-71.18, 9.82], [-71.52999999999997, 9.97], [-71.75, 10.5], [-71.64999999999998, 10.75], [-71.75, 11.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.39891665750406}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9471414295636338}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.102477103499382, 25.7052474710718, 25.675706740901035, 25.374431759913705]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.288837839258633, 23.259032212416344, 23.364254968917862, 23.204779171545567]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1053184932194569, -1.9837866253773868, -1.9604778404385836, -2.1269703175399735]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2470981555237586, -3.2213544364549307, -3.39891665750406, -3.371776131778745]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.574997115047062, -1.7812846900410668, -1.6995396467991153, -1.6837784431862157]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8393107039307082, -2.476433555924226, -2.3725823116777267, -2.2452038312343423]}}