{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:11:45.479747", "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": "2020-Mar-07_to_2020-Mar-10_269.5_60.0"}, "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": 2020030000258}, "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 07 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 10 2020"}, "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": 69824.35975572668}, "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": ["Canada"]}, "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": 60.0}, "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": 269.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "269.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 266.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 272.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-88.854, 59.749], [-88.75, 59.5], [-88.97, 58.97], [-89.5, 58.75], [-90.0, 58.957], [-90.5, 58.75], [-90.75, 58.854], [-91.0, 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["N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-03-07T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-93.67677669529661, 59.32322330470336], [-94.03033008588989, 59.46966991411009], [-94.25, 60.0], [-94.03033008588989, 60.53033008588991], [-93.67677669529661, 60.67677669529664], [-93.53033008588989, 61.03033008588991], [-93.17677669529661, 61.17677669529664], [-93.03033008588989, 61.53033008588991], [-92.5, 61.75], [-92.25, 61.64644660940672], [-92.17677669529661, 61.67677669529664], [-92.03033008588989, 62.03033008588991], [-91.5, 62.25], [-91.25, 62.14644660940672], [-91.0, 62.25], [-90.75, 62.14644660940672], [-90.5, 62.25], [-90.25, 62.14644660940672], [-90.0, 62.25], [-89.75, 62.14644660940672], [-89.5, 62.25], [-89.25, 62.14644660940672], [-89.0, 62.25], [-88.75, 62.14644660940672], [-88.67677669529661, 62.17677669529664], [-88.53033008588989, 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"anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.222233395511182, -10.096774787182028, -7.628214539936863, -5.398092063360025]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.328407366198813, -1.8336671295155456, -1.343308606667361, -1.093147146123497]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5459104803731385, -2.0438661488386747, -1.558314850170002, -1.0996113231911595]}}