{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:31:21.798297", "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-Jun-21_to_2022-Jun-26_318.5_-4.0"}, "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": 2022060000855}, "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": "June 21 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 26 2022"}, "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": 61640.394799934664}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.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": []}, "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": -4.0}, "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": 318.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "318.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 316.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 320.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.65, -3.75], [-43.75, -3.5], [-43.53, -2.97], [-43.0, 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[-39.47, -3.97], [-39.25, -4.5], [-39.47, -5.03], [-39.82, -5.18], [-39.97, -5.53], [-40.5, -5.75], [-40.75, -5.65], [-41.0, -5.75], [-41.25, -5.65], [-41.32, -5.68], [-41.47, -6.03], [-42.0, -6.25], [-42.53, -6.03], [-42.75, -5.5], [-42.65, -5.25], [-42.68, -5.18], [-42.75, -5.15], [-43.0, -5.25], [-43.53, -5.03], [-43.75, -4.5], [-43.65, -4.25], [-43.75, -4.0], [-43.65, -3.75]]]]}, "2022-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.65, -3.75], [-43.75, -3.5], [-43.53, -2.97], [-43.0, -2.75], [-42.75, -2.85], [-42.5, -2.75], [-42.25, -2.85], [-42.0, -2.75], [-41.75, -2.85], [-41.5, -2.75], [-40.97, -2.97], [-40.75, -3.5], [-40.85, -3.75], [-40.82, -3.82], [-40.75, -3.85], [-40.5, -3.75], [-40.25, -3.85], [-40.0, -3.75], [-39.47, -3.97], [-39.25, -4.5], [-39.47, -5.03], [-39.82, -5.18], [-39.97, -5.53], [-40.5, -5.75], [-40.75, -5.65], [-41.0, -5.75], [-41.25, -5.65], [-41.32, -5.68], [-41.47, -6.03], [-42.0, -6.25], [-42.53, -6.03], [-42.75, -5.5], [-42.65, -5.25], [-42.68, -5.18], [-42.75, -5.15], [-43.0, -5.25], [-43.53, -5.03], [-43.75, -4.5], [-43.65, -4.25], [-43.75, -4.0], [-43.65, -3.75]]]]}, "2022-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.03, -3.47], [-41.5, -3.25], [-40.97, -3.47], [-40.82, -3.82], [-40.47, -3.97], [-40.25, -4.5], [-40.47, -5.03], [-41.0, -5.25], [-41.25, -5.15], [-41.37, -5.2], [-41.25, -5.5], [-41.47, -6.03], [-42.0, -6.25], [-42.53, -6.03], [-42.75, -5.5], [-42.53, -4.97], [-42.12, -4.8], [-42.25, -4.5], [-42.15, -4.25], [-42.25, -4.0], [-42.03, -3.47]]]]}, "2022-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.5, -3.25], [-40.97, -3.47], [-40.75, -4.0], [-40.97, -4.53], [-41.5, -4.75], [-42.03, -4.53], [-42.25, -4.0], [-42.03, -3.47], [-41.5, -3.25]]]]}, "2022-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-41.5, -3.25], [-40.97, -3.47], [-40.75, -4.0], [-40.97, -4.53], [-41.5, -4.75], [-42.03, -4.53], [-42.25, -4.0], [-42.03, -3.47], [-41.5, -3.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7128316041752214}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7906226012448925}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.334195283495717, 25.668912243179136, 25.498351159511287, 25.96089921222824, 27.069132765197367, 26.451861109365552]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.600880558422034, 22.904889602699598, 22.74674884860815, 23.75371614661401, 27.069132765197367, 26.451861109365552]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9723993820660979, -1.6556392212058484, -1.8371651509549394, 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