{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:49.972639", "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": "2023-Jan-14_to_2023-Jan-21_308.5_4.5"}, "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": 2023010000660}, "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": "January 14 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 21 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 95404.13284417795}, "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": ["French Guiana"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Atlantic-Ocean", "N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": ["North Atlantic 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": 4.5}, "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": 308.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "308.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 307.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 312.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.5, 5.25], [-50.97, 5.03], [-50.75, 4.5], [-50.97, 3.97], [-51.5, 3.75], [-52.03, 3.97], [-52.25, 4.5], [-52.03, 5.03], [-51.5, 5.25]]]]}, "2023-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.03, 4.47], [-53.25, 5.0], [-53.03, 5.53], [-52.5, 5.75], [-51.97, 5.53], [-51.8, 5.12], [-51.5, 5.25], [-50.97, 5.03], [-50.75, 4.5], [-50.97, 3.97], [-51.5, 3.75], [-52.03, 3.97], [-52.2, 4.38], [-52.5, 4.25], [-53.03, 4.47]]]]}, "2023-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.03, 4.47], [-53.25, 5.0], [-53.03, 5.53], [-52.5, 5.75], [-51.97, 5.53], [-51.8, 5.12], [-51.5, 5.25], [-50.97, 5.03], [-50.75, 4.5], [-50.97, 3.97], [-51.5, 3.75], [-52.03, 3.97], [-52.2, 4.38], [-52.5, 4.25], [-53.03, 4.47]]]]}, "2023-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.03, 4.47], [-53.25, 5.0], [-53.03, 5.53], [-52.5, 5.75], [-52.25, 5.65], [-52.0, 5.75], [-51.47, 5.53], [-51.32, 5.18], [-50.97, 5.03], [-50.75, 4.5], [-50.97, 3.97], [-51.5, 3.75], [-52.03, 3.97], [-52.18, 4.32], 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"evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.95828801584986, 24.72060104538616, 24.699584286359368, 24.693393024583486, 25.069110404103753, 25.079443158750053, 25.22320200251687, 25.47993475271977]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.95828801584986, 24.588464909145955, 24.44411390441155, 24.32972525357178, 24.60707462055774, 24.78526799623785, 24.78828578727763, 25.47993475271977]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8543062223331503, -0.9291902606393592, -0.9509105772176838, -1.0040352648997175, -0.9732948541653628, -0.9668235420768481, -0.8269755413142195, -0.5379768681411861]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": 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