{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:43.083978", "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": "2026-May-16_to_2026-May-23_291.5_-55.0"}, "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": 2026050001812}, "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": "May 16 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 23 2026"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 237228.0202952943}, "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": ["Argentina", "Chile"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": ["South Atlantic Ocean", "South Pacific 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": -55.0}, "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": 291.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 286.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 294.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -55.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.04, -52.0], [-74.25, -51.5], [-74.03, -50.97], [-73.68, -50.82], [-73.65, -50.75], [-73.75, -50.5], [-73.53, -49.97], [-73.18, -49.82], [-73.03, -49.47], [-72.68, -49.32], [-72.53, -48.97], [-72.0, -48.75], [-71.75, -48.85], [-71.5, -48.75], [-71.25, -48.85], [-71.0, -48.75], [-70.75, -48.85], [-70.5, -48.75], [-69.97, -48.97], [-69.75, -49.5], [-69.97, -50.03], [-70.32, -50.18], [-70.35, -50.25], [-70.32, -50.32], [-69.97, -50.47], [-69.82, -50.82], [-69.75, -50.85], [-69.5, -50.75], [-68.97, -50.97], [-68.82, -51.32], [-68.47, -51.47], [-68.25, -52.0], [-68.47, -52.53], [-68.87, -52.7], [-68.75, -53.0], [-68.96, -53.5], [-68.75, -54.0], [-68.87, -54.3], [-68.75, -54.35], [-68.5, -54.25], [-68.25, -54.35], [-68.0, -54.25], [-67.75, -54.35], [-67.5, -54.25], [-66.97, -54.47], [-66.75, -55.0], [-66.97, -55.53], [-67.5, -55.75], [-67.75, -55.65], [-68.0, -55.75], [-68.25, -55.65], [-68.5, -55.75], [-68.75, -55.65], [-69.0, -55.75], [-69.25, -55.65], [-69.5, -55.75], [-70.03, -55.53], [-70.18, -55.18], [-70.25, -55.15], [-70.5, -55.25], [-70.75, -55.15], [-71.0, -55.25], [-71.53, -55.03], [-71.68, -54.68], [-72.03, -54.53], [-72.18, -54.18], [-72.25, -54.15], [-72.5, -54.25], [-72.75, -54.15], [-73.0, -54.25], [-73.53, -54.03], [-73.68, -53.68], [-74.03, -53.53], [-74.25, -53.0], [-74.15, -52.75], [-74.25, -52.5], [-74.04, -52.0]], [[-70.32, -53.82], [-70.25, -53.85], [-70.18, -53.82], [-70.12, -53.7], [-70.3, -53.62], [-70.35, -53.75], [-70.32, -53.82]]]]}, "2026-05-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.15, -52.25], [-74.25, -52.0], [-74.15, -51.75], [-74.25, -51.5], [-74.15, -51.25], [-74.25, -51.0], [-74.15, -50.75], [-74.25, -50.5], [-74.03, -49.97], [-73.5, -49.75], [-73.25, -49.85], [-73.18, -49.82], [-73.03, -49.47], [-72.68, -49.32], [-72.53, -48.97], [-72.0, -48.75], [-71.75, -48.85], [-71.5, -48.75], [-71.25, -48.85], [-71.0, -48.75], [-70.75, -48.85], [-70.5, -48.75], [-70.25, -48.85], [-70.0, -48.75], [-69.47, -48.97], [-69.32, -49.32], [-68.97, -49.47], [-68.75, -50.0], [-68.85, -50.25], [-68.75, -50.5], [-68.85, -50.75], [-68.82, -50.82], [-68.47, -50.97], [-68.25, -51.5], [-68.35, -51.75], [-68.25, -52.0], [-68.46, -52.5], [-68.25, -53.0], [-68.35, -53.25], [-68.25, -53.5], [-68.47, -54.03], [-68.82, -54.18], [-68.87, -54.3], [-68.75, -54.35], [-68.5, -54.25], [-68.25, -54.35], [-68.0, -54.25], [-67.75, -54.35], [-67.5, -54.25], [-66.97, -54.47], [-66.75, -55.0], [-66.97, -55.53], [-67.5, -55.75], [-67.75, -55.65], [-68.0, -55.75], [-68.25, -55.65], [-68.5, -55.75], [-68.75, -55.65], [-69.0, -55.75], [-69.25, -55.65], [-69.5, -55.75], [-70.03, -55.53], [-70.18, -55.18], [-70.25, -55.15], [-70.5, -55.25], [-70.75, -55.15], [-71.0, -55.25], [-71.25, -55.15], [-71.5, -55.25], [-72.03, -55.03], [-72.18, -54.68], [-72.25, -54.65], [-72.5, -54.75], [-73.03, -54.53], [-73.18, -54.18], [-73.53, -54.03], [-73.68, -53.68], [-74.03, -53.53], [-74.25, -53.0], [-74.15, -52.75], [-74.25, -52.5], [-74.15, -52.25]]]]}, "2026-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.15, -52.25], [-74.25, -52.0], [-74.15, -51.75], [-74.25, -51.5], [-74.15, -51.25], [-74.25, -51.0], [-74.15, -50.75], [-74.25, -50.5], [-74.15, -50.25], [-74.25, -50.0], [-74.15, -49.75], [-74.25, -49.5], [-74.15, -49.25], [-74.25, -49.0], [-74.03, -48.47], [-73.68, -48.32], [-73.53, -47.97], [-73.0, -47.75], [-72.5, -47.96], [-72.0, -47.75], [-71.75, -47.85], [-71.5, -47.75], [-70.97, -47.97], [-70.82, -48.32], [-70.47, -48.47], [-70.32, -48.82], [-70.25, -48.85], [-70.18, -48.82], [-70.03, -48.47], [-69.68, -48.32], [-69.53, -47.97], [-69.0, -47.75], [-68.75, -47.85], [-68.5, -47.75], [-67.97, -47.97], [-67.75, -48.5], [-67.97, -49.03], [-68.32, -49.18], [-68.46, -49.5], [-68.25, -50.0], [-68.35, -50.25], [-68.25, -50.5], [-68.46, -51.0], [-68.25, -51.5], [-68.35, -51.75], [-68.25, -52.0], [-68.46, -52.5], [-68.25, -53.0], [-68.35, -53.25], [-68.25, -53.5], [-68.47, -54.03], [-68.82, -54.18], [-68.87, -54.3], [-68.75, -54.35], [-68.5, -54.25], [-68.25, -54.35], [-68.0, -54.25], [-67.75, -54.35], [-67.5, -54.25], [-66.97, -54.47], [-66.75, -55.0], [-66.97, -55.53], [-67.5, -55.75], [-67.75, -55.65], [-68.0, -55.75], [-68.25, -55.65], [-68.5, -55.75], [-68.75, -55.65], [-69.0, -55.75], [-69.25, -55.65], [-69.5, -55.75], [-70.03, -55.53], [-70.18, -55.18], [-70.25, -55.15], [-70.5, -55.25], [-70.75, -55.15], [-71.0, -55.25], [-71.25, -55.15], [-71.5, -55.25], [-72.03, -55.03], [-72.18, -54.68], [-72.25, -54.65], [-72.5, -54.75], [-73.03, -54.53], [-73.18, -54.18], [-73.53, -54.03], [-73.68, -53.68], [-74.03, -53.53], [-74.25, -53.0], [-74.15, -52.75], [-74.25, -52.5], [-74.15, -52.25]]]]}, "2026-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.15, -52.25], [-74.25, -52.0], [-74.15, -51.75], [-74.25, -51.5], [-74.15, -51.25], [-74.25, -51.0], [-74.15, -50.75], [-74.25, -50.5], [-74.15, -50.25], [-74.25, -50.0], [-74.15, -49.75], [-74.25, -49.5], [-74.15, -49.25], [-74.25, -49.0], [-74.03, -48.47], [-73.68, -48.32], [-73.53, -47.97], [-73.0, -47.75], [-72.5, -47.96], [-72.0, -47.75], [-71.75, -47.85], [-71.5, -47.75], [-70.97, -47.97], [-70.82, -48.32], [-70.47, -48.47], [-70.32, -48.82], [-70.25, -48.85], [-70.18, -48.82], [-70.03, -48.47], [-69.68, -48.32], [-69.53, -47.97], [-69.0, -47.75], [-68.75, -47.85], [-68.5, -47.75], [-67.97, -47.97], [-67.75, -48.5], [-67.97, -49.03], [-68.32, -49.18], [-68.46, -49.5], [-68.25, -50.0], [-68.35, -50.25], [-68.25, -50.5], [-68.46, -51.0], [-68.25, -51.5], [-68.35, -51.75], [-68.25, -52.0], [-68.46, -52.5], [-68.25, -53.0], [-68.35, -53.25], [-68.25, -53.5], [-68.47, -54.03], [-68.82, -54.18], [-68.87, -54.3], [-68.75, -54.35], [-68.5, -54.25], [-67.97, -54.47], [-67.75, -55.0], [-67.97, -55.53], [-68.5, -55.75], [-68.75, -55.65], [-69.0, -55.75], [-69.25, -55.65], [-69.5, -55.75], [-70.03, -55.53], [-70.18, -55.18], [-70.25, -55.15], [-70.5, -55.25], [-70.75, -55.15], [-71.0, -55.25], [-71.25, -55.15], [-71.5, -55.25], [-72.03, -55.03], [-72.18, -54.68], [-72.25, -54.65], [-72.5, -54.75], [-73.03, -54.53], [-73.18, -54.18], [-73.53, -54.03], [-73.68, -53.68], [-74.03, -53.53], [-74.25, -53.0], [-74.15, -52.75], [-74.25, -52.5], [-74.15, -52.25]]]]}, "2026-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.15, -49.25], [-74.25, -49.0], [-74.03, -48.47], [-73.68, -48.32], [-73.53, -47.97], [-73.0, -47.75], [-72.5, -47.96], [-72.0, -47.75], [-71.75, -47.85], [-71.5, -47.75], [-70.97, -47.97], [-70.82, -48.32], [-70.47, -48.47], [-70.32, -48.82], [-70.25, -48.85], [-70.18, -48.82], [-70.03, -48.47], [-69.68, -48.32], [-69.53, -47.97], [-69.0, -47.75], [-68.75, -47.85], [-68.5, -47.75], [-67.97, -47.97], [-67.75, -48.5], [-67.97, -49.03], [-68.32, -49.18], [-68.46, -49.5], [-68.25, -50.0], [-68.35, -50.25], [-68.25, -50.5], [-68.46, -51.0], [-68.25, -51.5], [-68.35, -51.75], [-68.25, -52.0], [-68.43, -52.43], [-68.0, -52.25], [-67.75, -52.35], [-67.5, -52.25], [-66.97, -52.47], [-66.75, -53.0], [-66.97, -53.53], [-67.32, -53.68], [-67.46, -54.0], [-67.32, -54.32], [-67.25, -54.35], [-67.0, -54.25], [-66.75, -54.35], [-66.5, -54.25], [-66.25, -54.35], [-66.0, -54.25], [-65.75, -54.35], [-65.5, -54.25], [-64.97, -54.47], [-64.75, -55.0], [-64.97, -55.53], [-65.5, -55.75], [-65.75, -55.65], [-65.82, -55.68], [-65.97, -56.03], [-66.5, -56.25], [-66.75, -56.15], [-67.0, -56.25], [-67.25, -56.15], [-67.5, -56.25], [-67.75, -56.15], [-68.0, -56.25], [-68.25, -56.15], [-68.5, -56.25], [-68.75, -56.15], [-69.0, -56.25], [-69.53, -56.03], [-69.68, -55.68], [-69.75, -55.65], [-70.0, -55.75], [-70.53, -55.53], [-70.68, -55.18], [-70.75, -55.15], [-71.0, -55.25], [-71.25, -55.15], [-71.5, -55.25], [-72.03, -55.03], [-72.18, -54.68], [-72.25, -54.65], [-72.5, -54.75], [-73.03, -54.53], [-73.25, -54.0], [-73.15, -53.75], [-73.18, -53.68], [-73.53, -53.53], [-73.75, -53.0], [-73.65, -52.75], [-73.75, -52.5], [-73.65, -52.25], [-73.75, -52.0], [-73.65, -51.75], [-73.75, -51.5], [-73.65, -51.25], [-73.75, -51.0], [-73.62, -50.7], [-74.03, -50.53], [-74.25, -50.0], [-74.15, -49.75], [-74.25, -49.5], [-74.15, -49.25]]]]}, "2026-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.5, -53.75], [-70.25, -53.85], [-70.0, -53.75], [-69.75, -53.85], [-69.5, -53.75], [-69.25, -53.85], [-69.12, -53.8], [-69.25, -53.5], [-69.03, -52.97], [-68.68, -52.82], [-68.53, -52.47], [-68.0, -52.25], [-67.75, -52.35], [-67.5, -52.25], [-66.97, -52.47], [-66.75, -53.0], [-66.97, -53.53], [-67.32, -53.68], [-67.46, -54.0], [-67.32, -54.32], [-67.25, -54.35], [-67.0, -54.25], [-66.75, -54.35], [-66.5, -54.25], [-66.25, -54.35], [-66.0, -54.25], [-65.75, -54.35], [-65.5, -54.25], [-64.97, -54.47], [-64.75, -55.0], [-64.97, -55.53], [-65.5, -55.75], [-65.75, -55.65], [-65.82, -55.68], [-65.97, -56.03], [-66.5, -56.25], [-66.75, -56.15], [-67.0, -56.25], [-67.25, -56.15], [-67.5, -56.25], [-67.75, -56.15], [-68.0, -56.25], [-68.25, -56.15], [-68.5, -56.25], [-68.75, -56.15], [-69.0, -56.25], [-69.53, -56.03], [-69.68, -55.68], [-69.75, -55.65], [-70.0, -55.75], [-70.53, -55.53], [-70.68, -55.18], [-71.03, -55.03], [-71.25, -54.5], [-71.03, -53.97], [-70.5, -53.75]]], [[[-73.25, -53.0], [-73.03, -52.47], [-72.5, -52.25], [-71.97, -52.47], [-71.75, -53.0], [-71.97, -53.53], [-72.5, -53.75], [-73.03, -53.53], [-73.25, -53.0]]], [[[-74.03, -48.47], [-73.68, -48.32], [-73.53, -47.97], [-73.0, -47.75], [-72.47, -47.97], [-72.25, -48.5], [-72.46, -49.0], [-72.25, -49.5], [-72.47, -50.03], [-72.82, -50.18], [-72.97, -50.53], [-73.5, -50.75], [-74.03, -50.53], [-74.25, -50.0], [-74.15, -49.75], [-74.25, -49.5], [-74.15, -49.25], [-74.25, -49.0], [-74.03, -48.47]]], [[[-70.97, -49.03], [-71.5, -49.25], [-72.03, -49.03], [-72.25, -48.5], [-72.03, -47.97], [-71.5, -47.75], [-70.97, -47.97], [-70.75, -48.5], [-70.97, -49.03]]], [[[-69.53, -47.97], [-69.0, -47.75], [-68.47, -47.97], [-68.25, -48.5], [-68.47, -49.03], [-69.0, -49.25], [-69.53, -49.03], [-69.75, -48.5], [-69.53, -47.97]]]]}, "2026-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.03, -53.97], [-70.5, -53.75], [-70.25, -53.85], [-70.0, -53.75], [-69.75, -53.85], [-69.5, -53.75], [-69.25, -53.85], [-69.12, -53.8], [-69.25, -53.5], [-69.03, -52.97], [-68.68, -52.82], [-68.53, -52.47], [-68.0, -52.25], [-67.75, -52.35], [-67.5, -52.25], [-66.97, -52.47], [-66.75, -53.0], [-66.97, -53.53], [-67.32, -53.68], [-67.46, -54.0], [-67.32, -54.32], [-67.25, -54.35], [-67.0, -54.25], [-66.75, -54.35], [-66.5, -54.25], [-66.25, -54.35], [-66.0, -54.25], [-65.75, -54.35], [-65.5, -54.25], [-64.97, -54.47], [-64.75, -55.0], [-64.97, -55.53], [-65.5, -55.75], [-65.75, -55.65], [-65.82, -55.68], [-65.97, -56.03], [-66.5, -56.25], [-66.75, -56.15], [-67.0, -56.25], [-67.25, -56.15], [-67.5, -56.25], [-67.75, -56.15], [-68.0, -56.25], [-68.25, -56.15], [-68.5, -56.25], [-68.75, -56.15], [-69.0, -56.25], [-69.53, -56.03], [-69.68, -55.68], [-69.75, -55.65], [-70.0, -55.75], [-70.53, -55.53], [-70.68, -55.18], [-71.03, -55.03], [-71.25, -54.5], [-71.03, -53.97]]], [[[-73.25, -53.0], [-73.03, -52.47], [-72.5, -52.25], [-71.97, -52.47], [-71.75, -53.0], [-71.97, -53.53], [-72.5, -53.75], [-73.03, -53.53], [-73.25, -53.0]]], [[[-72.25, -49.5], [-72.47, -50.03], [-72.82, -50.18], [-72.97, -50.53], [-73.5, -50.75], [-74.03, -50.53], [-74.25, -50.0], [-74.03, -49.47], [-73.68, -49.32], [-73.53, -48.97], [-73.0, -48.75], [-72.47, -48.97], [-72.25, -49.5]]]]}, "2026-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.0, -53.75], [-68.47, -53.97], [-68.25, -54.5], [-68.47, -55.03], [-69.0, -55.25], [-69.53, -55.03], [-69.75, -54.5], [-69.53, -53.97], [-69.0, -53.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.292134578442756}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.811338384263052}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.736534796820763, 7.3102834151479215, 9.208790460033981, 7.9042024400499145, 7.109184800769754, 6.393114286480625, 6.253927031017497, 2.900111134847009]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.030493672688806, 10.117622629801474, 16.042571004231775, 11.890112813313806, 11.312280273437523, 11.385523732503259, 8.36719665527346, 2.900111134847009]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.878572853440963, 4.264951886757557, 6.391871116158839, 5.225980982716023, 4.308620880223229, 4.313748437874515, 3.822198633828695, 3.2712457455840536]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.689693734515856, 6.098740000475743, 9.292134578442756, 8.293357485812635, 7.144554206255691, 7.392722900905596, 6.655600354363401, 3.2712457455840536]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5641432957395769, 1.7085208290738794, 2.4187564556177947, 1.9581509346253034, 1.692753963925101, 1.9339258542124178, 1.7087724747522015, 1.2375589119735946]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.032365549168816, 2.3182195508296144, 3.2371705119682472, 2.976554323956096, 2.692252357007299, 2.993503463306424, 2.344767269582719, 1.2375589119735946]}}