{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:54.433444", "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-Jan-27_to_2022-Jan-29_324.5_-6.0"}, "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": 2022010001024}, "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": "January 27 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 29 2022"}, "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": 64555.8887460912}, "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": -6.0}, "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": 324.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "324.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 323.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 326.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-36.68, -4.82], [-36.53, -4.47], [-36.0, -4.25], [-35.75, -4.35], [-35.5, -4.25], [-35.0, -4.46], [-34.68, -4.32], [-34.53, -3.97], [-34.0, -3.75], [-33.47, -3.97], [-33.25, -4.5], [-33.35, -4.75], [-33.25, -5.0], [-33.35, -5.25], [-33.25, -5.5], [-33.35, -5.75], [-33.25, -6.0], [-33.35, -6.25], [-33.25, -6.5], [-33.35, -6.75], [-33.25, -7.0], [-33.35, -7.25], [-33.25, -7.5], [-33.47, -8.03], [-34.0, -8.25], [-34.25, -8.15], [-34.5, -8.25], [-35.03, -8.03], [-35.25, -7.5], [-35.15, -7.25], [-35.18, -7.18], [-35.53, -7.03], [-35.68, -6.68], [-35.75, -6.65], [-36.0, -6.75], [-36.25, -6.65], [-36.5, -6.75], [-37.03, -6.53], [-37.25, -6.0], [-37.15, -5.75], [-37.25, -5.5], [-37.03, -4.97], [-36.68, -4.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "Equatorial.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.25, -5.5], [-37.02999999999997, -4.97], [-36.68000000000001, -4.82], [-36.52999999999997, -4.47], [-36.0, -4.25], [-35.75, -4.35], [-35.5, -4.25], [-35.0, -4.46], [-34.68000000000001, -4.32], [-34.52999999999997, -3.97], [-34.0, -3.75], [-33.47000000000003, -3.97], [-33.25, -4.5], [-33.35000000000002, -4.75], [-33.25, -5.0], [-33.35000000000002, -5.25], [-33.25, -5.5], [-33.35000000000002, -5.75], [-33.25, -6.0], [-33.35000000000002, -6.25], [-33.25, -6.5], [-33.35000000000002, -6.75], [-33.25, -7.0], [-33.35000000000002, -7.25], [-33.25, -7.5], [-33.47000000000003, -8.03], [-34.0, -8.25], [-34.25, -8.15], [-34.5, -8.25], [-35.02999999999997, -8.03], [-35.25, -7.5], [-35.14999999999998, -7.25], [-35.18000000000001, -7.18], [-35.52999999999997, -7.03], [-35.68000000000001, -6.68], [-35.75, -6.65], [-36.0, -6.75], [-36.25, -6.65], [-36.5, -6.75], [-37.02999999999997, -6.53], [-37.25, -6.0], [-37.14999999999998, -5.75], [-37.25, -5.5]]]]}, "2022-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.25, -5.5], [-37.02999999999997, -4.97], [-36.68000000000001, -4.82], [-36.52999999999997, -4.47], [-36.0, -4.25], [-35.75, -4.35], [-35.5, -4.25], [-35.0, -4.46], [-34.68000000000001, -4.32], [-34.52999999999997, -3.97], [-34.0, -3.75], [-33.47000000000003, -3.97], [-33.25, -4.5], [-33.35000000000002, -4.75], [-33.25, -5.0], [-33.35000000000002, -5.25], [-33.25, -5.5], [-33.35000000000002, -5.75], [-33.25, -6.0], [-33.35000000000002, -6.25], [-33.25, -6.5], [-33.35000000000002, -6.75], [-33.25, -7.0], [-33.35000000000002, -7.25], [-33.25, -7.5], [-33.47000000000003, -8.03], [-34.0, -8.25], [-34.25, -8.15], [-34.5, -8.25], [-35.02999999999997, -8.03], [-35.25, -7.5], [-35.14999999999998, -7.25], [-35.18000000000001, -7.18], [-35.52999999999997, -7.03], [-35.68000000000001, -6.68], [-35.75, -6.65], [-36.0, -6.75], [-36.25, -6.65], [-36.5, -6.75], [-37.02999999999997, -6.53], [-37.25, -6.0], [-37.14999999999998, -5.75], [-37.25, -5.5]]]]}, "2022-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.25, -5.5], [-37.02999999999997, -4.97], [-36.68000000000001, -4.82], [-36.52999999999997, -4.47], [-36.0, -4.25], [-35.75, -4.35], [-35.5, -4.25], [-35.0, -4.46], [-34.68000000000001, -4.32], [-34.52999999999997, -3.97], [-34.0, -3.75], [-33.47000000000003, -3.97], [-33.25, -4.5], [-33.35000000000002, -4.75], [-33.25, -5.0], [-33.35000000000002, -5.25], [-33.25, -5.5], [-33.35000000000002, -5.75], [-33.25, -6.0], [-33.35000000000002, -6.25], [-33.25, -6.5], [-33.35000000000002, -6.75], [-33.25, -7.0], [-33.35000000000002, -7.25], [-33.25, -7.5], [-33.47000000000003, -8.03], [-34.0, -8.25], [-34.25, -8.15], [-34.5, -8.25], [-35.02999999999997, -8.03], [-35.25, -7.5], [-35.14999999999998, -7.25], [-35.18000000000001, -7.18], [-35.52999999999997, -7.03], [-35.68000000000001, -6.68], [-35.75, -6.65], [-36.0, -6.75], [-36.25, -6.65], [-36.5, -6.75], [-37.02999999999997, -6.53], [-37.25, -6.0], [-37.14999999999998, -5.75], [-37.25, -5.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.591502764063762}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5278743380328177}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.589192937078337, 25.0577725274091, 25.415840962573668]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.78692216742246, 23.897897969382086, 23.64386201523166]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2758371974945844, -1.8241307516956313, -1.4836550649082374]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9898731594988135, -3.537649098832503, -3.591502764063762]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9532873897652014, -2.813997552632269, -2.1989797799454225]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.447287605631241, -3.406310595383188, -3.5577217504729735]}}