{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:23.481515", "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": "2025-Apr-27_to_2025-Apr-30_287.0_-48.5"}, "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": 2025040002463}, "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": "April 27 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 30 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 51863.66961814632}, "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", "S.W.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 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": -48.5}, "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": 287.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "287.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 285.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -49.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -45.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -48.0], [-75.03, -47.47], [-74.5, -47.25], [-74.25, -47.35], [-74.18, -47.32], [-74.04, -47.0], [-74.25, -46.5], [-74.03, -45.97], [-73.5, -45.75], [-72.97, -45.97], [-72.82, -46.32], [-72.57, -46.43], [-72.75, -46.0], [-72.53, -45.47], [-72.0, -45.25], [-71.47, -45.47], [-71.25, -46.0], [-71.47, -46.53], [-72.0, -46.75], [-71.47, -46.97], [-71.32, -47.32], [-70.97, -47.47], [-70.75, -48.0], [-70.85, -48.25], [-70.75, -48.5], [-70.97, -49.03], [-71.32, -49.18], [-71.47, -49.53], [-72.0, -49.75], [-72.25, -49.65], [-72.5, -49.75], [-72.75, -49.65], [-73.0, -49.75], [-73.53, -49.53], [-73.7, -49.12], [-74.0, -49.25], [-74.53, -49.03], [-74.68, -48.68], [-75.03, -48.53], [-75.25, -48.0]], [[-72.43, -46.57], [-72.3, -46.88], [-72.0, -46.75], [-72.43, -46.57]]]]}, "2025-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -48.0], [-75.03, -47.47], [-74.68, -47.32], [-74.53, -46.97], [-74.12, -46.8], [-74.25, -46.5], [-74.03, -45.97], [-73.5, -45.75], [-73.0, -45.96], [-72.68, -45.82], [-72.53, -45.47], [-72.0, -45.25], [-71.47, -45.47], [-71.25, -46.0], [-71.47, -46.53], [-71.82, -46.68], [-71.85, -46.75], [-71.82, -46.82], [-71.47, -46.97], [-71.32, -47.32], [-70.97, -47.47], [-70.75, -48.0], [-70.85, -48.25], [-70.75, -48.5], [-70.97, -49.03], [-71.32, -49.18], [-71.47, -49.53], [-72.0, -49.75], [-72.25, -49.65], [-72.5, -49.75], [-72.75, -49.65], [-73.0, -49.75], [-73.53, -49.53], [-73.7, -49.12], [-74.0, -49.25], [-74.53, -49.03], [-74.68, -48.68], [-75.03, -48.53], [-75.25, -48.0]]]]}, "2025-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -48.0], [-75.03, -47.47], [-74.68, -47.32], [-74.53, -46.97], [-74.12, -46.8], [-74.25, -46.5], [-74.03, -45.97], [-73.5, -45.75], [-73.0, -45.96], [-72.68, -45.82], [-72.53, -45.47], [-72.0, -45.25], [-71.47, -45.47], [-71.25, -46.0], [-71.47, -46.53], [-71.82, -46.68], [-71.85, -46.75], [-71.82, -46.82], [-71.47, -46.97], [-71.32, -47.32], [-70.97, -47.47], [-70.75, -48.0], [-70.85, -48.25], [-70.75, -48.5], [-70.97, -49.03], [-71.32, -49.18], [-71.47, -49.53], [-72.0, -49.75], [-72.25, -49.65], [-72.5, -49.75], [-72.75, -49.65], [-73.0, -49.75], [-73.53, -49.53], [-73.7, -49.12], [-74.0, -49.25], [-74.53, -49.03], [-74.68, -48.68], [-75.03, -48.53], [-75.25, -48.0]]]]}, "2025-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.53, -46.97], [-74.0, -46.75], [-73.5, -46.96], [-73.18, -46.82], [-73.15, -46.75], [-73.25, -46.5], [-73.03, -45.97], [-72.68, -45.82], [-72.53, -45.47], [-72.0, -45.25], [-71.47, -45.47], [-71.25, -46.0], [-71.47, -46.53], [-71.82, -46.68], [-71.85, -46.75], [-71.82, -46.82], [-71.47, -46.97], [-71.25, -47.5], [-71.47, -48.03], [-71.87, -48.2], [-71.75, -48.5], [-71.85, -48.75], [-71.75, -49.0], [-71.97, -49.53], [-72.5, -49.75], [-72.75, -49.65], [-73.0, -49.75], [-73.53, -49.53], [-73.7, -49.12], [-74.0, -49.25], [-74.53, -49.03], [-74.75, -48.5], [-74.54, -48.0], [-74.75, -47.5], [-74.53, -46.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.667159191014434}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.3525940851549874}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.6695168344598414, 6.04687444051109, 5.684931284586639, 5.589582648644125]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.253672536214196, 10.152974700927757, 9.49375940958663, 8.272318776448571]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.431970282120071, 3.566960406942428, 3.2543596956774947, 3.0132520813022725]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.32141430839431, 4.667159191014434, 4.07902696874379, 3.634413455775075]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5079171119303891, 1.5929719893158052, 1.421926918058797, 1.3489144663708568]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.784227456140436, 1.8641443541485239, 1.698883587648795, 1.45913345314595]}}