{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:31.216451", "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-Nov-21_to_2021-Nov-23_319.5_-22.5"}, "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": 2021110000721}, "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 21 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 23 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": 65947.87603497363}, "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": ["Atlantic Ocean"]}, "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": -22.5}, "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": 319.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "319.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 318.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 321.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-41.25, -21.85], [-41.18, -21.82], [-41.15, -21.75], [-41.25, -21.5], [-41.15, -21.25], [-41.25, -21.0], [-41.03, -20.47], [-40.68, -20.32], [-40.53, -19.97], [-40.18, -19.82], [-40.03, -19.47], [-39.5, -19.25], [-38.97, -19.47], [-38.82, -19.82], [-38.47, -19.97], [-38.25, -20.5], [-38.47, -21.03], [-38.82, -21.18], [-38.85, -21.25], [-38.75, -21.5], [-38.85, -21.75], [-38.75, -22.0], [-38.97, -22.53], [-39.32, -22.68], [-39.47, -23.03], [-39.82, -23.18], [-39.85, -23.25], [-39.75, -23.5], [-39.97, -24.03], [-40.5, -24.25], [-40.75, -24.15], [-41.0, -24.25], [-41.53, -24.03], [-41.68, -23.68], [-41.75, -23.65], [-42.0, -23.75], [-42.53, -23.53], [-42.75, -23.0], [-42.53, -22.47], [-42.18, -22.32], [-42.03, -21.97], [-41.5, -21.75], [-41.25, -21.85]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.02999999999997, -21.97], [-41.5, -21.75], [-41.25, -21.85], [-41.18000000000001, -21.82], [-41.14999999999998, -21.75], [-41.25, -21.5], [-41.14999999999998, -21.25], [-41.25, -21.0], [-41.02999999999997, -20.47], [-40.68000000000001, -20.32], [-40.52999999999997, -19.97], [-40.18000000000001, -19.82], [-40.02999999999997, -19.47], [-39.5, -19.25], [-38.97000000000003, -19.47], [-38.81999999999999, -19.82], [-38.47000000000003, -19.97], [-38.25, -20.5], [-38.47000000000003, -21.03], [-38.81999999999999, -21.18], [-38.85000000000002, -21.25], [-38.75, -21.5], [-38.85000000000002, -21.75], [-38.75, -22.0], [-38.97000000000003, -22.53], [-39.31999999999999, -22.68], [-39.47000000000003, -23.03], [-39.81999999999999, -23.18], [-39.85000000000002, -23.25], [-39.75, -23.5], [-39.97000000000003, -24.03], [-40.5, -24.25], [-40.75, -24.15], [-41.0, -24.25], [-41.52999999999997, -24.03], [-41.68000000000001, -23.68], [-41.75, -23.65], [-42.0, -23.75], [-42.52999999999997, -23.53], [-42.75, -23.0], [-42.52999999999997, -22.47], [-42.18000000000001, -22.32], [-42.02999999999997, -21.97]]]]}, "2021-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.02999999999997, -21.97], [-41.5, -21.75], [-41.25, -21.85], [-41.18000000000001, -21.82], [-41.14999999999998, -21.75], [-41.25, -21.5], [-41.14999999999998, -21.25], [-41.25, -21.0], [-41.02999999999997, -20.47], [-40.68000000000001, -20.32], [-40.52999999999997, -19.97], [-40.18000000000001, -19.82], [-40.02999999999997, -19.47], [-39.5, -19.25], [-38.97000000000003, -19.47], [-38.81999999999999, -19.82], [-38.47000000000003, -19.97], [-38.25, -20.5], [-38.47000000000003, -21.03], [-38.81999999999999, -21.18], [-38.85000000000002, -21.25], [-38.75, -21.5], [-38.85000000000002, -21.75], [-38.75, -22.0], [-38.97000000000003, -22.53], [-39.31999999999999, -22.68], [-39.47000000000003, -23.03], [-39.81999999999999, -23.18], [-39.85000000000002, -23.25], [-39.75, -23.5], [-39.97000000000003, -24.03], [-40.5, -24.25], [-40.75, -24.15], [-41.0, -24.25], [-41.52999999999997, -24.03], [-41.68000000000001, -23.68], [-41.75, -23.65], [-42.0, -23.75], [-42.52999999999997, -23.53], [-42.75, -23.0], [-42.52999999999997, -22.47], [-42.18000000000001, -22.32], [-42.02999999999997, -21.97]]]]}, "2021-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.02999999999997, -21.97], [-41.5, -21.75], [-41.25, -21.85], [-41.18000000000001, -21.82], [-41.14999999999998, -21.75], [-41.25, -21.5], [-41.14999999999998, -21.25], [-41.25, -21.0], [-41.02999999999997, -20.47], [-40.68000000000001, -20.32], [-40.52999999999997, -19.97], [-40.18000000000001, -19.82], [-40.02999999999997, -19.47], [-39.5, -19.25], [-38.97000000000003, -19.47], [-38.81999999999999, -19.82], [-38.47000000000003, -19.97], [-38.25, -20.5], [-38.47000000000003, -21.03], [-38.81999999999999, -21.18], [-38.85000000000002, -21.25], [-38.75, -21.5], [-38.85000000000002, -21.75], [-38.75, -22.0], [-38.97000000000003, -22.53], [-39.31999999999999, -22.68], [-39.47000000000003, -23.03], [-39.81999999999999, -23.18], [-39.85000000000002, -23.25], [-39.75, -23.5], [-39.97000000000003, -24.03], [-40.5, -24.25], [-40.75, -24.15], [-41.0, -24.25], [-41.52999999999997, -24.03], [-41.68000000000001, -23.68], [-41.75, -23.65], [-42.0, -23.75], [-42.52999999999997, -23.53], [-42.75, -23.0], [-42.52999999999997, -22.47], [-42.18000000000001, -22.32], [-42.02999999999997, -21.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9605249657980153}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.897184864470715}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.982345761822046, 21.430871218610662, 22.344336697986364]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.813220967510972, 20.869683893559113, 21.580612282013192]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.807569193550421, -2.3798014963635534, -1.5041839034981703]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.604147249685468, -2.9605249657980153, -1.725442906187368]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8762387993306415, -2.5650521479229065, -1.6964323571320592]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4000716402485285, -3.010998638742748, -1.9944575454528657]}}