{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:02.504761", "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": "2022-Sep-28_to_2022-Oct-01_296.5_20.0"}, "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": 2022090001015}, "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 28 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 01 2022"}, "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": 202984.50181049103}, "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": ["Bonaire, Sint Eustatius and Saba", "Sint Maarten (Dutch part)"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": ["Atlantic Ocean", "Caribbean Sea", "Sargasso Sea"]}, "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": 20.0}, "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": 296.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "296.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 294.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 298.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-65.75, 21.5], [-65.53, 22.03], [-65.18, 22.18], [-65.15, 22.25], [-65.25, 22.5], [-65.03, 23.03], [-64.68, 23.18], 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"IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.02999999999997, 19.47], [-66.25, 20.0], [-66.02999999999997, 20.53], [-65.68, 20.68], [-65.64999999999998, 20.75], [-65.75, 21.0], [-65.64999999999998, 21.25], [-65.75, 21.5], [-65.52999999999997, 22.03], [-65.18, 22.18], [-65.14999999999998, 22.25], [-65.25, 22.5], [-65.02999999999997, 23.03], [-64.68, 23.18], [-64.64999999999998, 23.25], [-64.75, 23.5], [-64.52999999999997, 24.03], [-64.0, 24.25], [-63.5, 24.04], [-63.0, 24.25], [-62.47000000000003, 24.03], [-62.31999999999999, 23.68], [-62.25, 23.65], [-62.0, 23.75], [-61.47000000000003, 23.53], [-61.25, 23.0], [-61.35000000000002, 22.75], [-61.25, 22.5], [-61.47000000000003, 21.97], 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"evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.53999172985266, 25.396038548977515, 25.84814788675709, 26.358187921644685]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0728236794925048, -1.3299283527366705, -1.093439087370321, -0.8124427636695526]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5128162456792325, -1.9634465989883552, -1.5132701457147846, -0.9066402276905592]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8961295552954527, -2.384004794133578, -2.0071408838273728, -1.4906680351990043]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5983864379260693, -3.3519607654216044, -2.7818299428795803, -1.6861858970127093]}}