{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:35.257582", "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-Sep-27_to_2021-Oct-02_246.5_28.5"}, "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": 2021090000935}, "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": "September 27 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 02 2021"}, "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": 95439.25961689209}, "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": 28.5}, "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": 246.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "246.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 245.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 249.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-111.35, 27.75], [-111.32, 27.68], [-111.25, 27.65], [-111.0, 27.75], [-110.47, 27.53], [-110.25, 27.0], [-110.35, 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"IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.75, 30.0], [-115.53, 30.53], [-115.0, 30.75], [-114.47, 30.53], [-114.32, 30.18], [-113.97, 30.03], [-113.82, 29.68], [-113.75, 29.65], [-113.5, 29.75], [-112.97, 29.53], [-112.75, 29.0], [-112.85, 28.75], [-112.75, 28.5], [-112.97, 27.97], [-113.5, 27.75], [-113.75, 27.85], [-114.0, 27.75], [-114.53, 27.97], [-114.75, 28.5], [-114.65, 28.75], [-114.68, 28.82], [-114.75, 28.85], [-115.0, 28.75], [-115.53, 28.97], [-115.75, 29.5], [-115.65, 29.75], [-115.75, 30.0]]]]}, "2021-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.75, 30.0], [-115.53, 30.53], [-115.0, 30.75], [-114.47, 30.53], [-114.32, 30.18], [-114.25, 30.15], 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-1.3634666682244387]}}