{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:17.737892", "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-Feb-27_to_2021-Mar-05_320.5_-14.0"}, "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": 2021020001019}, "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": "February 27 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 05 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 71894.34534591986}, "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": -14.0}, "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": 320.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "320.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 317.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 321.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.25, -16.0], [-42.03, -15.47], [-41.5, -15.25], [-41.25, 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-14.25], [-40.75, -14.15], [-41.0, -14.25], [-41.25, -14.15], [-41.5, -14.25], [-42.03, -14.03]]]]}, "2021-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.5, -13.25], [-38.97, -13.47], [-38.75, -14.0], [-38.97, -14.53], [-39.5, -14.75], [-40.03, -14.53], [-40.25, -14.0], [-40.03, -13.47], [-39.5, -13.25]]]]}, "2021-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.5, -13.25], [-38.97, -13.47], [-38.75, -14.0], [-38.97, -14.53], [-39.5, -14.75], [-40.03, -14.53], [-40.25, -14.0], [-40.03, -13.47], [-39.5, -13.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0870254660790692}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0894020754739335}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.69614275911448, 22.35564802783989, 22.734369537527243, 22.805681059507094, 22.824559127426596, 23.78034132658439, 23.99541018425691]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.45924183715698, 20.355553803068403, 20.736581104661184, 20.67706204870052, 21.077547413236914, 23.78034132658439, 23.99541018425691]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.704140746740336, -2.450534873329493, -2.0869402578696943, -2.0181578955625974, -1.6730462872298801, -1.7386906050896869, -1.507357025765259]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9158828148584917, -3.0870254660790692, -2.816285894276689, -2.4341754848036885, -2.0199652643336776, -1.7386906050896869, -1.507357025765259]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean 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