{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:30.111005", "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-Sep-21_to_2021-Sep-26_283.0_-8.5"}, "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": 2021090000715}, "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 21 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 26 2021"}, "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": 79076.67808371468}, "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": ["Peru"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -8.5}, "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": 283.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "283.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 282.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 285.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -13.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-74.97, -10.97], [-74.82, -11.32], [-74.75, -11.35], [-74.5, -11.25], [-73.97, -11.47], [-73.75, -12.0], [-73.85, 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"List of all IPCC regions affected", "value": ["N.W.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.52999999999997, -7.47], [-78.0, -7.25], [-77.47000000000003, -7.47], [-77.25, -8.0], [-77.47000000000003, -8.53], [-78.0, -8.75], [-78.52999999999997, -8.53], [-78.75, -8.0], [-78.52999999999997, -7.47]]]]}, "2021-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.52999999999997, -8.53], [-78.75, -8.0], [-78.52999999999997, -7.47], [-78.18, -7.32], [-78.14999999999998, -7.25], [-78.25, -7.0], [-78.02999999999997, -6.47], [-77.5, -6.25], [-76.97000000000003, -6.47], [-76.75, -7.0], [-76.85000000000002, -7.25], [-76.75, -7.5], [-76.85000000000002, -7.75], [-76.82, -7.82], [-76.47000000000003, -7.97], [-76.25, -8.5], [-76.35000000000002, -8.75], [-76.32, -8.82], [-76.25, -8.85], [-76.0, 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mean t2m.", "value": [6.330832670167183, 6.858422746349561, 6.36166345497594, 6.013805368603528, 4.998877520863914, 5.9760185646164246]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.330832670167183, 1.3314227713664195, 0.9630649492006569, 0.4790871739397744, 1.2953061937261623, 2.8819340287597583]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8820672028403465, -1.151232051558605, -1.6770533033169188, -2.027995437985643, -1.2295270827834865, -1.108484738852809]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8820672028403465, -1.4412016735514044, -2.0931288753877197, -2.77878604289549, -1.425545965925835, -1.2256074167848965]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": 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