{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:28.692821", "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": "2021-Jul-19_to_2021-Jul-23_260.0_35.5"}, "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": 2021070000725}, "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": "July 19 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 23 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 137612.36602588987}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": 35.5}, "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": 260.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "260.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 255.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 262.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.03, 32.47], [-100.25, 33.0], [-100.03, 33.53], [-99.5, 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33.25], [-104.25, 33.5], [-104.03, 34.03]]]]}, "2021-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.75, 33.5], [-104.53, 34.03], [-104.0, 34.25], [-103.75, 34.15], [-103.68, 34.18], [-103.53, 34.53], [-103.0, 34.75], [-102.75, 34.65], [-102.68, 34.68], [-102.53, 35.03], [-102.0, 35.25], [-101.75, 35.15], [-101.68, 35.18], [-101.65, 35.25], [-101.75, 35.5], [-101.65, 35.75], [-101.75, 36.0], [-101.53, 36.53], [-101.0, 36.75], [-100.75, 36.65], [-100.5, 36.75], [-100.25, 36.65], [-100.18, 36.68], [-100.03, 37.03], [-99.5, 37.25], [-99.25, 37.15], [-99.0, 37.25], [-98.75, 37.15], [-98.5, 37.25], [-97.97, 37.03], [-97.75, 36.5], [-97.85, 36.25], [-97.75, 36.0], [-97.85, 35.75], [-97.82, 35.68], [-97.47, 35.53], [-97.25, 35.0], [-97.47, 34.47], [-97.82, 34.32], [-97.97, 33.97], [-98.5, 33.75], [-98.75, 33.85], [-98.82, 33.82], [-98.96, 33.5], [-98.75, 33.0], [-98.97, 32.47], [-99.5, 32.25], [-100.0, 32.46], [-100.5, 32.25], [-100.75, 32.35], [-101.0, 32.25], 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anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6516015021889854, -1.7284031898351317, -2.0509784984949104, -1.7492927544121935, -1.2527285824069154]}}