{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:18:31.232133", "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-Mar-04_to_2022-Mar-08_322.5_-8.5"}, "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": 2022030000177}, "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 04 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 08 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 64151.46389701132}, "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": -8.5}, "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": 322.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "322.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 320.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 324.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-40.25, -7.5], [-40.03, -6.97], [-39.5, -6.75], [-38.97, -6.97], [-38.82, -7.32], [-38.75, -7.35], [-38.5, -7.25], [-38.25, -7.35], [-38.0, -7.25], [-37.47, -7.47], [-37.32, -7.82], [-37.25, -7.85], [-37.0, -7.75], [-36.47, -7.97], [-36.25, -8.5], [-36.35, -8.75], [-36.32, -8.82], [-36.25, -8.85], [-36.0, -8.75], [-35.47, -8.97], [-35.25, -9.5], [-35.47, -10.03], [-36.0, -10.25], [-36.25, -10.15], [-36.5, -10.25], [-36.75, -10.15], [-37.0, -10.25], [-37.25, -10.15], [-37.5, -10.25], [-37.75, -10.15], [-38.0, -10.25], [-38.25, -10.15], [-38.5, -10.25], [-39.03, -10.03], [-39.18, -9.68], [-39.53, -9.53], [-39.75, -9.0], [-39.65, -8.75], [-39.68, -8.68], [-40.03, -8.53], [-40.25, -8.0], [-40.15, -7.75], [-40.25, -7.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.02999999999997, -8.03], [-40.25, -7.5], 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[-36.47000000000003, -9.03], [-37.0, -9.25], [-37.25, -9.15], [-37.5, -9.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1048839446997363}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2501971639212583}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.819826836592995, 24.759615945832763, 25.109541238702263, 25.052443621006773, 24.6831045334867]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.706238082770824, 22.64218717241556, 22.783691716658552, 23.552373181571397, 24.270124297060818]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3667603492575173, -2.3642944734696862, -2.0335982371612893, -2.348463184590768, -1.5986819142629258]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0425721131074965, -3.1048839446997363, -2.530738952772367, -2.712911575740634, -1.7514838879588979]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6844744708597812, -1.6978105432687869, -1.4715840565895615, -1.6154793204818028, -1.24825463128417]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9170736002400077, -2.28830378625722, -1.8016470005623162, -1.9417963677399221, -1.2627985161440474]}}