{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:00.813086", "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-May-08_to_2022-May-11_315.0_-3.0"}, "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": 2022050000364}, "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": "May 08 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 11 2022"}, "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": 55552.32860315869}, "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": -3.0}, "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": 315.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "315.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 314.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 320.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-44.25, -2.85], [-44.0, -2.75], [-43.75, -2.85], [-43.5, -2.75], [-43.25, -2.85], [-43.18, -2.82], [-43.03, -2.47], [-42.5, -2.25], [-42.25, -2.35], [-42.0, -2.25], [-41.75, -2.35], [-41.5, -2.25], [-41.25, -2.35], [-41.0, -2.25], [-40.75, -2.35], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47, -2.47], [-39.25, -3.0], [-39.35, -3.25], [-39.25, -3.5], [-39.47, -4.03], [-40.0, -4.25], [-40.53, -4.03], [-40.68, -3.68], [-40.75, -3.65], [-41.0, -3.75], [-41.25, -3.65], [-41.5, -3.75], [-41.75, -3.65], [-41.82, -3.68], [-41.97, -4.03], [-42.32, -4.18], [-42.47, -4.53], [-43.0, -4.75], [-43.25, -4.65], [-43.5, -4.75], [-44.03, -4.53], [-44.18, -4.18], [-44.25, -4.15], [-44.5, -4.25], [-45.03, -4.03], [-45.18, -3.68], [-45.53, -3.53], [-45.68, -3.18], [-46.03, -3.03], [-46.25, -2.5], [-46.15, -2.25], [-46.25, -2.0], [-46.03, -1.47], [-45.5, -1.25], [-44.97, -1.47], [-44.82, -1.82], [-44.47, -1.97], [-44.25, -2.5], [-44.35, -2.75], [-44.32, -2.82], [-44.25, -2.85]]]]}}, "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": {"2022-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.52999999999997, -2.47], [-45.0, -2.25], [-44.47000000000003, -2.47], [-44.25, -3.0], [-44.47000000000003, -3.53], [-45.0, -3.75], [-45.52999999999997, -3.53], [-45.75, -3.0], [-45.52999999999997, -2.47]]]]}, "2022-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.25, -2.0], [-46.02999999999997, -1.47], [-45.5, -1.25], [-44.97000000000003, -1.47], [-44.81999999999999, -1.82], [-44.47000000000003, -1.97], [-44.25, -2.5], [-44.35000000000002, -2.75], [-44.31999999999999, -2.82], [-44.25, -2.85], [-44.0, -2.75], [-43.75, -2.85], [-43.5, -2.75], [-43.25, -2.85], [-43.18000000000001, -2.82], [-43.02999999999997, -2.47], [-42.5, -2.25], [-42.25, -2.35], [-42.0, -2.25], [-41.75, -2.35], [-41.5, -2.25], [-41.25, -2.35], [-41.0, -2.25], [-40.75, -2.35], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47000000000003, -2.47], [-39.25, -3.0], [-39.35000000000002, -3.25], [-39.25, -3.5], [-39.47000000000003, -4.03], [-40.0, -4.25], [-40.52999999999997, -4.03], [-40.68000000000001, -3.68], [-40.75, -3.65], [-41.0, -3.75], [-41.25, -3.65], [-41.5, -3.75], [-41.75, -3.65], [-41.81999999999999, -3.68], [-41.97000000000003, -4.03], [-42.31999999999999, -4.18], [-42.47000000000003, -4.53], [-43.0, -4.75], [-43.25, -4.65], [-43.5, -4.75], [-44.02999999999997, -4.53], [-44.18000000000001, -4.18], [-44.25, -4.15], [-44.5, -4.25], [-45.02999999999997, -4.03], [-45.18000000000001, -3.68], [-45.52999999999997, -3.53], [-45.68000000000001, -3.18], [-46.02999999999997, -3.03], [-46.25, -2.5], [-46.14999999999998, -2.25], [-46.25, -2.0]]]]}, "2022-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.25, -2.0], [-46.02999999999997, -1.47], [-45.5, -1.25], [-44.97000000000003, -1.47], [-44.81999999999999, -1.82], [-44.47000000000003, -1.97], [-44.25, -2.5], [-44.35000000000002, -2.75], [-44.31999999999999, -2.82], [-44.25, -2.85], [-44.0, -2.75], [-43.75, -2.85], [-43.5, -2.75], [-43.25, -2.85], [-43.18000000000001, -2.82], [-43.02999999999997, -2.47], [-42.5, -2.25], [-42.25, -2.35], [-42.0, -2.25], [-41.75, -2.35], [-41.5, -2.25], [-41.25, -2.35], [-41.0, -2.25], [-40.75, -2.35], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47000000000003, -2.47], [-39.25, -3.0], [-39.35000000000002, -3.25], [-39.25, -3.5], [-39.47000000000003, -4.03], [-40.0, -4.25], [-40.52999999999997, -4.03], [-40.68000000000001, -3.68], [-40.75, -3.65], [-41.0, -3.75], [-41.25, -3.65], [-41.5, -3.75], [-41.75, -3.65], [-41.81999999999999, -3.68], [-41.97000000000003, -4.03], [-42.31999999999999, -4.18], [-42.47000000000003, -4.53], [-43.0, -4.75], [-43.25, -4.65], [-43.5, -4.75], [-44.02999999999997, -4.53], [-44.18000000000001, -4.18], [-44.25, -4.15], [-44.5, -4.25], [-45.02999999999997, -4.03], [-45.18000000000001, -3.68], [-45.52999999999997, -3.53], [-45.68000000000001, -3.18], [-46.02999999999997, -3.03], [-46.25, -2.5], [-46.14999999999998, -2.25], [-46.25, -2.0]]]]}, "2022-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.25, -2.0], [-46.02999999999997, -1.47], [-45.5, -1.25], [-44.97000000000003, -1.47], [-44.81999999999999, -1.82], [-44.47000000000003, -1.97], [-44.25, -2.5], [-44.35000000000002, -2.75], [-44.31999999999999, -2.82], [-44.25, -2.85], [-44.0, -2.75], [-43.75, -2.85], [-43.5, -2.75], [-43.25, -2.85], [-43.18000000000001, -2.82], [-43.02999999999997, -2.47], [-42.5, -2.25], [-42.25, -2.35], [-42.0, -2.25], [-41.75, -2.35], [-41.5, -2.25], [-41.25, -2.35], [-41.0, -2.25], [-40.75, -2.35], [-40.5, -2.25], [-40.25, -2.35], [-40.0, -2.25], [-39.47000000000003, -2.47], [-39.25, -3.0], [-39.35000000000002, -3.25], [-39.25, -3.5], [-39.47000000000003, -4.03], [-40.0, -4.25], [-40.52999999999997, -4.03], [-40.68000000000001, -3.68], [-40.75, -3.65], [-41.0, -3.75], [-41.25, -3.65], [-41.5, -3.75], [-41.75, -3.65], [-41.81999999999999, -3.68], [-41.97000000000003, -4.03], [-42.31999999999999, -4.18], [-42.47000000000003, -4.53], [-43.0, -4.75], [-43.25, -4.65], [-43.5, -4.75], [-44.02999999999997, -4.53], [-44.18000000000001, -4.18], [-44.25, -4.15], [-44.5, -4.25], [-45.02999999999997, -4.03], [-45.18000000000001, -3.68], [-45.52999999999997, -3.53], [-45.68000000000001, -3.18], [-46.02999999999997, -3.03], [-46.25, -2.5], [-46.14999999999998, -2.25], [-46.25, -2.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.2657770104529504}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4234085134877712}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.86261141818767, 25.52827688027429, 25.32934345667934, 25.808392956162095]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.86261141818767, 24.94564151182493, 24.268136107509235, 25.219567694978366]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0614636233488, -1.4153088698403071, -1.6641899492698384, -1.2108347708053329]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0614636233488, -1.7608088492165166, -2.2657770104529504, -1.5169811957759407]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3213135888908474, -1.6752169730117967, -2.044574304289155, -1.4951637028623703]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3213135888908474, -2.0655686020557584, -2.7806208736916633, -1.8086848735385364]}}