{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:35.851251", "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": "2023-Mar-29_to_2023-Apr-01_323.5_-7.5"}, "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": 2023030000949}, "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": "March 29 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 01 2023"}, "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": 55053.2491188377}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": -7.5}, "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": 323.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "323.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 319.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 323.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.68, -7.32], [-37.53, -6.97], [-37.18, -6.82], [-37.03, -6.47], [-36.5, -6.25], [-35.97, -6.47], [-35.75, -7.0], [-35.85, -7.25], [-35.75, -7.5], [-35.85, -7.75], [-35.75, -8.0], [-35.97, -8.53], [-36.5, -8.75], [-36.75, -8.65], [-36.82, -8.68], [-36.97, -9.03], [-37.5, -9.25], [-38.0, -9.04], [-38.5, -9.25], [-39.03, -9.03], [-39.25, -8.5], [-39.03, -7.97], [-38.5, -7.75], [-38.2, -7.88], [-38.03, -7.47], [-37.68, -7.32]]]]}, "2023-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.03, -7.47], [-40.5, -7.25], [-39.97, -7.47], [-39.82, -7.82], [-39.75, -7.85], [-39.5, -7.75], [-39.25, -7.85], [-39.0, -7.75], [-38.75, -7.85], [-38.5, -7.75], [-38.25, -7.85], [-38.18, -7.82], [-38.03, -7.47], [-37.68, -7.32], [-37.53, -6.97], [-37.18, -6.82], [-37.03, -6.47], [-36.5, -6.25], [-35.97, -6.47], [-35.75, -7.0], [-35.85, -7.25], [-35.75, -7.5], [-35.85, -7.75], [-35.75, -8.0], [-35.97, -8.53], [-36.5, -8.75], [-36.75, -8.65], [-36.82, -8.68], [-36.97, -9.03], [-37.5, -9.25], [-37.75, -9.15], [-37.82, -9.18], [-37.97, -9.53], [-38.5, -9.75], [-38.75, -9.65], [-39.0, -9.75], [-39.25, -9.65], [-39.5, -9.75], [-39.75, -9.65], [-40.0, -9.75], [-40.53, -9.53], [-40.68, -9.18], [-41.03, -9.03], [-41.25, -8.5], [-41.15, -8.25], [-41.25, -8.0], [-41.03, -7.47]]]]}, "2023-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.03, -7.47], [-40.5, -7.25], [-39.97, -7.47], [-39.82, -7.82], [-39.75, -7.85], [-39.5, -7.75], [-39.25, -7.85], [-39.0, -7.75], [-38.75, -7.85], [-38.5, -7.75], [-38.25, -7.85], [-38.18, -7.82], [-38.03, -7.47], [-37.68, -7.32], [-37.53, -6.97], [-37.18, -6.82], [-37.03, -6.47], [-36.5, -6.25], [-35.97, -6.47], [-35.75, -7.0], [-35.85, -7.25], [-35.75, -7.5], [-35.85, -7.75], [-35.75, -8.0], [-35.97, -8.53], [-36.5, -8.75], [-36.75, -8.65], [-36.82, -8.68], [-36.97, -9.03], [-37.5, -9.25], [-37.75, -9.15], [-37.82, -9.18], [-37.97, -9.53], [-38.5, -9.75], [-38.75, -9.65], [-39.0, -9.75], [-39.25, -9.65], [-39.5, -9.75], [-39.75, -9.65], [-40.0, -9.75], [-40.53, -9.53], [-40.68, -9.18], [-41.03, -9.03], [-41.25, -8.5], [-41.15, -8.25], [-41.25, -8.0], [-41.03, -7.47]]]]}, "2023-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.03, -7.47], [-40.5, -7.25], [-39.97, -7.47], [-39.82, -7.82], [-39.75, -7.85], [-39.5, -7.75], [-39.25, -7.85], [-39.0, -7.75], [-38.75, -7.85], [-38.5, -7.75], [-38.25, -7.85], [-38.0, -7.75], [-37.75, -7.85], [-37.62, -7.8], [-37.75, -7.5], [-37.53, -6.97], [-37.18, -6.82], [-37.03, -6.47], [-36.5, -6.25], [-35.97, -6.47], [-35.75, -7.0], [-35.85, -7.25], [-35.75, -7.5], [-35.85, -7.75], [-35.75, -8.0], [-35.97, -8.53], [-36.5, -8.75], [-36.8, -8.62], [-36.97, -9.03], [-37.5, -9.25], [-37.75, -9.15], [-37.82, -9.18], [-37.97, -9.53], [-38.5, -9.75], [-38.75, -9.65], [-39.0, -9.75], [-39.25, -9.65], [-39.5, -9.75], [-39.75, -9.65], [-40.0, -9.75], [-40.53, -9.53], [-40.68, -9.18], [-41.03, -9.03], [-41.25, -8.5], [-41.15, -8.25], [-41.25, -8.0], [-41.03, -7.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7222183495287027}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9866320547340413}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.36926496404982, 24.55369736771945, 24.708686375575667, 24.922819434504845]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.596891136897682, 23.35402545592791, 23.614408857683145, 23.378058512404834]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8512047016307278, -2.1619605593981754, -2.0025982427315006, -1.8391392020414052]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.094019508765655, -2.7222183495287027, -2.540971314219064, -2.1514963983559596]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5101434045733355, -1.6272562448330083, -1.5011270068861962, -1.4054561582510874]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8170717000110543, -2.2840728063912237, -1.795031214790325, -1.68867486552872]}}