{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:48.835221", "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": "2023-Dec-18_to_2023-Dec-20_291.5_-53.0"}, "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": 2023120001671}, "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": "December 18 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 20 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 87246.61232074304}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": ["Atlantic 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": -53.0}, "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": 287.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 294.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -55.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -52.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-73.75, -52.5], [-73.53, -51.97], [-73.0, -51.75], [-72.47, -51.97], [-72.32, -52.32], [-72.25, -52.35], [-72.0, -52.25], [-71.47, -52.47], [-71.32, -52.82], [-71.25, -52.85], [-71.12, -52.8], [-71.25, -52.5], [-71.03, -51.97], [-70.5, -51.75], [-69.97, -51.97], [-69.82, -52.32], [-69.75, -52.35], [-69.5, -52.25], [-69.25, -52.35], [-69.0, -52.25], [-68.75, -52.35], [-68.5, -52.25], [-68.25, -52.35], [-68.0, -52.25], [-67.47, -52.47], [-67.32, -52.82], [-66.97, -52.97], [-66.82, -53.32], [-66.47, -53.47], [-66.32, -53.82], [-66.25, -53.85], [-66.0, -53.75], [-65.47, -53.97], [-65.25, -54.5], [-65.47, -55.03], [-65.82, -55.18], [-65.97, -55.53], [-66.5, -55.75], [-66.75, -55.65], [-66.82, -55.68], [-66.97, -56.03], [-67.5, -56.25], [-67.75, -56.15], [-68.0, -56.25], [-68.53, -56.03], [-68.68, -55.68], [-68.75, -55.65], [-69.0, -55.75], [-69.53, -55.53], [-69.68, -55.18], [-69.75, -55.15], [-70.0, -55.25], [-70.25, -55.15], [-70.5, -55.25], [-70.75, -55.15], [-71.0, -55.25], [-71.53, -55.03], [-71.68, -54.68], [-71.75, -54.65], [-72.0, -54.75], [-72.53, -54.53], [-72.68, -54.18], [-72.75, -54.15], [-73.0, -54.25], [-73.53, -54.03], [-73.75, -53.5], [-73.65, -53.25], [-73.75, -53.0], [-73.65, -52.75], [-73.75, -52.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.South-America", "Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, -53.0], [-73.64999999999998, -52.75], [-73.75, -52.5], [-73.52999999999997, -51.97], [-73.0, -51.75], [-72.47000000000003, -51.97], [-72.32, -52.32], [-72.25, -52.35], [-72.0, -52.25], [-71.47000000000003, -52.47], [-71.32, -52.82], [-71.25, -52.85], [-71.12, -52.8], [-71.25, -52.5], [-71.02999999999997, -51.97], [-70.5, -51.75], [-69.97000000000003, -51.97], [-69.82, -52.32], [-69.75, -52.35], [-69.5, -52.25], [-69.25, -52.35], [-69.0, -52.25], [-68.75, -52.35], [-68.5, -52.25], [-68.25, -52.35], [-68.0, -52.25], [-67.47000000000003, -52.47], [-67.32, -52.82], [-66.97000000000003, -52.97], [-66.82, -53.32], [-66.47000000000003, -53.47], [-66.32, -53.82], [-66.25, -53.85], [-66.0, -53.75], [-65.47000000000003, -53.97], [-65.25, -54.5], [-65.47000000000003, -55.03], [-65.82, -55.18], [-65.97000000000003, -55.53], [-66.5, -55.75], [-66.75, -55.65], [-66.82, -55.68], [-66.97000000000003, -56.03], [-67.5, -56.25], [-67.75, -56.15], [-68.0, -56.25], [-68.52999999999997, -56.03], [-68.68, -55.68], [-68.75, -55.65], [-69.0, -55.75], [-69.52999999999997, -55.53], [-69.68, -55.18], [-69.75, -55.15], [-70.0, -55.25], [-70.25, -55.15], [-70.5, -55.25], [-70.75, -55.15], [-71.0, -55.25], [-71.52999999999997, -55.03], [-71.68, -54.68], [-71.75, -54.65], [-72.0, -54.75], [-72.52999999999997, -54.53], [-72.68, -54.18], [-72.75, -54.15], [-73.0, -54.25], [-73.52999999999997, -54.03], [-73.75, -53.5], [-73.64999999999998, -53.25], [-73.75, -53.0]]]]}, "2023-12-19T11:30:00.000000000": {"type": 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-53.5], [-73.64999999999998, -53.25], [-73.75, -53.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.936301150643374}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.791236844962531}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.4317939431769, 11.54208418814153, 12.18563949456285]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.030547099959335, 15.61557288983522, 17.47726406044086]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.813756762082214, 3.969346071098286, 4.590607701707092]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.15461472677174, 6.320041054696674, 6.936301150643374]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5211586553147585, 2.2171870823526185, 2.62008500739116]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8003515731412973, 2.8691922475761023, 3.5416807449160044]}}