{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:12.573219", "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": "2024-Jun-10_to_2024-Jun-13_273.5_37.0"}, "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": 2024060000339}, "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": "June 10 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 13 2024"}, "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": 207550.00098724783}, "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": ["United States"]}, "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": 37.0}, "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": 273.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "273.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 269.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 277.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-90.0, 34.25], [-90.53, 34.47], [-90.68, 34.82], [-90.75, 34.85], [-91.0, 34.75], [-91.53, 34.97], [-91.75, 35.5], [-91.53, 36.03], [-91.18, 36.18], [-91.15, 36.25], [-91.25, 36.5], [-91.03, 37.03], [-90.5, 37.25], [-90.25, 37.15], [-90.18, 37.18], [-90.03, 37.53], [-89.68, 37.68], [-89.53, 38.03], [-89.0, 38.25], [-88.75, 38.15], [-88.68, 38.18], [-88.53, 38.53], [-88.18, 38.68], [-88.03, 39.03], [-87.5, 39.25], [-87.25, 39.15], [-87.0, 39.25], [-86.75, 39.15], [-86.5, 39.25], [-86.25, 39.15], [-86.0, 39.25], [-85.75, 39.15], [-85.5, 39.25], [-85.25, 39.15], [-85.0, 39.25], [-84.47, 39.03], [-84.32, 38.68], [-84.25, 38.65], [-84.18, 38.68], [-84.03, 39.03], [-83.5, 39.25], [-83.25, 39.15], [-83.0, 39.25], [-82.47, 39.03], [-82.25, 38.5], [-82.35, 38.25], [-82.25, 38.0], [-82.37, 37.7], [-81.97, 37.53], [-81.75, 37.0], [-81.85, 36.75], [-81.75, 36.5], [-81.97, 35.97], [-82.5, 35.75], [-82.75, 35.85], [-82.82, 35.82], [-82.97, 35.47], [-83.5, 35.25], [-84.03, 35.47], [-84.18, 35.82], [-84.5, 35.96], [-84.82, 35.82], [-84.97, 35.47], [-85.32, 35.32], [-85.47, 34.97], [-86.0, 34.75], [-86.25, 34.85], [-86.5, 34.75], [-86.75, 34.85], [-87.0, 34.75], [-87.25, 34.85], [-87.5, 34.75], [-87.75, 34.85], [-88.0, 34.75], [-88.53, 34.97], [-88.68, 35.32], [-88.75, 35.35], [-88.82, 35.32], [-88.97, 34.97], [-89.32, 34.82], [-89.47, 34.47], [-90.0, 34.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.14999999999998, 36.25], [-91.25, 36.5], [-91.02999999999997, 37.03], [-90.5, 37.25], [-90.25, 37.15], [-90.18, 37.18], [-90.02999999999997, 37.53], [-89.68, 37.68], [-89.52999999999997, 38.03], [-89.0, 38.25], [-88.75, 38.15], [-88.68, 38.18], [-88.52999999999997, 38.53], [-88.18, 38.68], [-88.02999999999997, 39.03], [-87.5, 39.25], [-87.25, 39.15], [-87.0, 39.25], [-86.75, 39.15], 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"description": "The daily evolution of maximum t2m anomalies.", "value": [-5.170971770724634, -7.1797409732164965, -5.315169977344226, -3.1557933190140375]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6312616230922565, -2.1100091312589107, -1.7239980775009494, -1.4812237151704133]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9936074022087311, -2.57806464702174, -2.190717771744194, -1.4812237151704133]}}