{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:25.511608", "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-Feb-12_to_2022-Feb-19_301.0_1.0"}, "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": 2022020000586}, "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": "February 12 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 19 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 71006.78315612608}, "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", "Guyana", "Suriname"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America", "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": 1.0}, "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": 301.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 300.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-59.5, 2.54], [-59.0, 2.75], [-59.53, 2.97], [-59.75, 3.5], [-59.53, 4.03], [-59.0, 4.25], [-58.75, 4.15], [-58.68, 4.18], 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["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.52999999999997, 5.53], [-57.0, 5.75], [-56.47000000000003, 5.53], [-56.31999999999999, 5.18], [-55.97000000000003, 5.03], [-55.75, 4.5], [-55.97000000000003, 3.97], [-56.5, 3.75], [-57.0, 3.96], [-57.5, 3.75], [-58.02999999999997, 3.97], [-58.25, 4.5], [-58.02999999999997, 5.03], [-57.68000000000001, 5.18], [-57.52999999999997, 5.53]]]]}, "2022-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.52999999999997, 5.53], [-57.0, 5.75], [-56.47000000000003, 5.53], [-56.31999999999999, 5.18], [-55.97000000000003, 5.03], [-55.75, 4.5], [-55.97000000000003, 3.97], [-56.5, 3.75], [-57.0, 3.96], [-57.5, 3.75], [-58.02999999999997, 3.97], [-58.25, 4.5], [-58.02999999999997, 5.03], [-57.68000000000001, 5.18], [-57.52999999999997, 5.53]]]]}, 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duration", "value": -3.0467576176619673}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6550269252811005}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.29346320531073, 24.273196339577396, 24.168826348910102, 24.028699476203542, 23.594465994744553, 23.67348383984455, 22.849313306196336, 22.843374577913835]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.10595101868796, 24.096909550569933, 24.063167839839366, 23.116303367068213, 22.49866626598765, 22.571915261321067, 21.702034303323273, 21.60696785231363]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1943323277668014, -1.1632605268781997, -1.2307549945705507, -1.5426569616438222, -1.591388377791688, -1.5060064638721655, 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