{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:37.567775", "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-Mar-19_to_2021-Mar-23_294.5_-10.0"}, "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": 2021030000788}, "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": "March 19 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 23 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 51930.47322090817}, "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": ["Bolivia", "Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "South-American-Monsoon"]}, "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": []}, "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": -10.0}, "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": 294.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "294.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 291.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 295.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -8.0], [-68.53, -7.47], [-68.0, -7.25], [-67.75, 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-10.25], [-67.03, -10.03], [-67.18, -9.68], [-67.53, -9.53], [-67.68, -9.18], [-68.03, -9.03], [-68.18, -8.68], [-68.53, -8.53], [-68.75, -8.0]]]]}, "2021-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -8.0], [-68.53, -7.47], [-68.18, -7.32], [-68.03, -6.97], [-67.5, -6.75], [-66.97, -6.97], [-66.82, -7.32], [-66.75, -7.35], [-66.5, -7.25], [-65.97, -7.47], [-65.82, -7.82], [-65.47, -7.97], [-65.25, -8.5], [-65.35, -8.75], [-65.32, -8.82], [-64.97, -8.97], [-64.82, -9.32], [-64.47, -9.47], [-64.25, -10.0], [-64.47, -10.53], [-65.0, -10.75], [-65.25, -10.65], [-65.5, -10.75], [-66.03, -10.53], [-66.18, -10.18], [-66.25, -10.15], [-66.5, -10.25], [-67.03, -10.03], [-67.18, -9.68], [-67.53, -9.53], [-67.68, -9.18], [-68.03, -9.03], [-68.18, -8.68], [-68.53, -8.53], [-68.75, -8.0]]]]}, "2021-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -8.0], [-68.53, -7.47], [-68.18, -7.32], [-68.03, -6.97], [-67.5, -6.75], [-66.97, -6.97], 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{"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4817860185810938}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.349926749527583, 23.99545781855545, 24.063032674995497, 24.28801035830446, 24.33697192156376]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.949967063499457, 23.273893465062088, 23.793488392967106, 23.999340013882204, 24.293505624193642]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3077390358491487, -1.6708881726911007, -1.5811173418775164, -1.3517063929756794, -1.2625756293202623]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.565116433841979, -2.3680903335801986, -1.8540940249223468, -1.6243004334783109, -1.2898242448149517]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5825813018139532, -1.9809314948576033, -1.8917805451121072, -1.5990787442897898, -1.5276148772324287]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8877393743062771, -2.893014184357685, -2.271605187053766, -1.874129146596392, -1.5432192998194867]}}