{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:30.899524", "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": "2018-Nov-19_to_2018-Nov-22_261.0_26.5"}, "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": 2018110000655}, "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": "November 19 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 22 2018"}, "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": 100163.83330090583}, "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": ["Mexico", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-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": ["Gulf of Mexico"]}, "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": 26.5}, "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": 261.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "261.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 258.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 262.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.75, 27.0], [-101.53, 27.53], [-101.0, 27.75], [-100.75, 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25.0], [-96.85, 24.75], [-96.75, 24.5], [-96.85, 24.25], [-96.75, 24.0], [-96.97, 23.47], [-97.5, 23.25], [-97.75, 23.35], [-98.0, 23.25], [-98.25, 23.35], [-98.5, 23.25], [-99.03, 23.47], [-99.18, 23.82], [-99.25, 23.85], [-99.5, 23.75], [-100.03, 23.97], [-100.25, 24.5], [-100.15, 24.75], [-100.25, 25.0], [-100.15, 25.25], [-100.25, 25.5], [-100.15, 25.75], [-100.18, 25.82], [-100.25, 25.85], [-100.5, 25.75], [-101.03, 25.97], [-101.18, 26.32], [-101.53, 26.47], [-101.75, 27.0]]]]}, "2018-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.75, 27.0], [-101.53, 27.53], [-101.0, 27.75], [-100.75, 27.65], [-100.5, 27.75], [-100.25, 27.65], [-100.18, 27.68], [-100.03, 28.03], [-99.5, 28.25], [-99.25, 28.15], [-99.0, 28.25], [-98.75, 28.15], [-98.5, 28.25], [-97.97, 28.03], [-97.75, 27.5], [-97.85, 27.25], [-97.82, 27.18], [-97.47, 27.03], [-97.25, 26.5], [-97.35, 26.25], [-97.25, 26.0], [-97.35, 25.75], [-97.32, 25.68], [-96.97, 25.53], [-96.75, 25.0], [-96.85, 24.75], [-96.75, 24.5], [-96.85, 24.25], [-96.75, 24.0], [-96.97, 23.47], [-97.5, 23.25], [-97.75, 23.35], [-98.0, 23.25], [-98.25, 23.35], [-98.5, 23.25], [-99.03, 23.47], [-99.18, 23.82], [-99.25, 23.85], [-99.5, 23.75], [-100.03, 23.97], [-100.25, 24.5], [-100.15, 24.75], [-100.25, 25.0], [-100.15, 25.25], [-100.25, 25.5], [-100.15, 25.75], [-100.18, 25.82], [-100.25, 25.85], [-100.5, 25.75], [-101.03, 25.97], [-101.18, 26.32], [-101.53, 26.47], [-101.75, 27.0]]]]}, "2018-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.25, 27.0], [-101.03, 27.53], [-100.5, 27.75], [-100.25, 27.65], [-100.18, 27.68], [-100.03, 28.03], [-99.5, 28.25], [-99.25, 28.15], [-99.0, 28.25], [-98.75, 28.15], [-98.5, 28.25], [-97.97, 28.03], [-97.75, 27.5], [-97.85, 27.25], [-97.82, 27.18], [-97.47, 27.03], [-97.25, 26.5], [-97.35, 26.25], [-97.25, 26.0], [-97.35, 25.75], [-97.32, 25.68], [-96.97, 25.53], [-96.75, 25.0], [-96.85, 24.75], [-96.75, 24.5], [-96.85, 24.25], [-96.75, 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