{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:19.758585", "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-Oct-15_to_2024-Oct-20_246.0_25.5"}, "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": 2024100000312}, "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": "October 15 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 20 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 107101.59964913654}, "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"]}, "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": ["Pacific Ocean"]}, "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": 25.5}, "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": 246.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "246.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 246.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 249.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-114.65, 25.75], [-114.75, 26.0], [-114.53, 26.53], [-114.18, 26.68], [-114.03, 27.03], [-113.5, 27.25], [-113.25, 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["N.Central-America", "N.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.75, 25.0], [-114.65, 25.25], [-114.75, 25.5], [-114.65, 25.75], [-114.75, 26.0], [-114.53, 26.53], [-114.0, 26.75], [-113.47, 26.53], [-113.32, 26.18], [-112.97, 26.03], [-112.75, 25.5], [-112.97, 24.97], [-113.32, 24.82], [-113.35, 24.75], [-113.25, 24.5], [-113.47, 23.97], [-114.0, 23.75], [-114.53, 23.97], [-114.75, 24.5], [-114.65, 24.75], [-114.75, 25.0]]]]}, "2024-10-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.75, 25.0], [-114.65, 25.25], [-114.75, 25.5], [-114.65, 25.75], [-114.75, 26.0], [-114.53, 26.53], [-114.0, 26.75], [-113.75, 26.65], [-113.5, 26.75], [-113.25, 26.65], [-113.0, 26.75], [-112.47, 26.53], [-112.32, 26.18], [-111.97, 26.03], [-111.75, 25.5], [-111.85, 25.25], [-111.82, 25.18], 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anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5140168984745481, -1.5530305021266273, -1.8351415318038682, -2.173460369603303, -1.8788412870216584, -1.5451065003313575]}}