{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:54.555860", "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-Mar-13_to_2025-Mar-17_284.5_-74.0"}, "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": 2025030001527}, "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": "March 13 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 17 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 84849.36194496474}, "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": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": ["Southern 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": -74.0}, "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": 284.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "284.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 283.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 295.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -75.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -69.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.75, -74.35], [-69.5, -74.25], [-68.97, -74.47], [-68.75, -75.0], [-68.97, -75.53], [-69.5, -75.75], [-69.75, -75.65], [-70.0, -75.75], [-70.25, -75.65], [-70.5, -75.75], [-71.03, -75.53], [-71.25, -75.0], [-71.03, -74.47], [-70.5, -74.25], [-70.25, -74.35], [-70.0, -74.25], [-69.75, -74.35]]], [[[-75.75, -72.85], [-75.5, -72.75], [-75.25, -72.85], [-75.0, -72.75], [-74.75, -72.85], [-74.5, -72.75], [-74.25, -72.85], [-74.0, -72.75], [-73.75, -72.85], [-73.5, -72.75], [-73.25, -72.85], [-73.0, -72.75], [-72.75, -72.85], [-72.5, -72.75], [-72.25, -72.85], [-72.0, -72.75], [-71.75, -72.85], [-71.5, -72.75], [-71.25, -72.85], [-71.0, -72.75], [-70.75, -72.85], [-70.68, -72.82], [-70.53, -72.47], [-70.0, -72.25], [-69.75, -72.35], [-69.5, -72.25], [-69.25, -72.35], [-69.0, -72.25], [-68.47, -72.47], [-68.32, -72.82], [-67.97, -72.97], [-67.75, -73.5], [-67.97, -74.03], [-68.5, -74.25], [-68.75, -74.15], [-69.0, -74.25], [-69.25, -74.15], [-69.5, -74.25], [-69.75, -74.15], [-70.0, -74.25], [-70.25, -74.15], [-70.5, -74.25], [-70.75, -74.15], [-71.0, -74.25], [-71.25, -74.15], [-71.5, -74.25], [-71.75, -74.15], [-72.0, -74.25], [-72.25, -74.15], [-72.5, -74.25], [-72.75, -74.15], [-72.82, -74.18], [-72.85, -74.25], [-72.75, -74.5], [-72.97, -75.03], [-73.5, -75.25], [-73.75, -75.15], [-74.0, -75.25], [-74.53, -75.03], [-74.68, -74.68], [-74.75, -74.65], [-75.0, -74.75], [-75.25, -74.65], [-75.5, -74.75], [-75.75, -74.65], [-76.0, -74.75], [-76.53, -74.53], [-76.75, -74.0], [-76.65, -73.75], [-76.75, -73.5], [-76.53, -72.97], [-76.0, -72.75], [-75.75, -72.85]]], [[[-67.5, -69.25], [-67.25, -69.35], [-67.0, -69.25], [-66.75, -69.35], [-66.5, -69.25], [-66.25, -69.35], [-66.0, -69.25], [-65.75, -69.35], [-65.5, -69.25], [-65.25, -69.35], [-65.0, -69.25], [-64.75, -69.35], [-64.5, -69.25], [-63.97, -69.47], [-63.75, -70.0], [-63.97, -70.53], [-64.5, -70.75], [-64.75, -70.65], [-64.82, -70.68], [-64.87, -70.8], [-64.47, -70.97], [-64.25, -71.5], [-64.47, -72.03], [-64.87, -72.2], [-64.75, -72.5], [-64.97, -73.03], [-65.5, -73.25], [-65.75, -73.15], [-66.0, -73.25], [-66.25, -73.15], [-66.5, -73.25], [-67.03, -73.03], [-67.25, -72.5], [-67.15, -72.25], [-67.18, -72.18], [-67.53, -72.03], [-67.75, -71.5], [-67.54, -71.0], [-67.68, -70.68], [-68.03, -70.53], [-68.25, -70.0], [-68.03, -69.47], [-67.5, -69.25]]]]}, "2025-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.25, -73.0], [-77.03, -72.47], [-76.5, -72.25], [-76.25, -72.35], [-76.0, -72.25], [-75.75, -72.35], [-75.5, -72.25], [-75.25, -72.35], [-75.0, -72.25], [-74.75, -72.35], [-74.5, -72.25], [-74.25, -72.35], [-74.0, -72.25], [-73.47, -72.47], [-73.32, -72.82], [-73.25, -72.85], [-73.0, -72.75], [-72.75, -72.85], [-72.5, -72.75], [-72.25, -72.85], [-72.0, -72.75], [-71.75, -72.85], [-71.68, -72.82], [-71.53, -72.47], [-71.0, -72.25], [-70.75, -72.35], [-70.5, -72.25], [-70.25, -72.35], [-70.18, -72.32], [-70.03, -71.97], [-69.68, -71.82], [-69.53, -71.47], [-69.0, -71.25], [-68.75, -71.35], [-68.5, -71.25], [-68.25, -71.35], [-68.0, -71.25], [-67.75, -71.35], [-67.68, -71.32], [-67.54, -71.0], [-67.68, -70.68], [-68.03, -70.53], [-68.25, -70.0], [-68.03, -69.47], [-67.68, -69.32], [-67.53, -68.97], [-67.0, -68.75], [-66.47, -68.97], [-66.32, -69.32], [-66.25, -69.35], [-66.0, -69.25], [-65.75, -69.35], [-65.5, -69.25], [-65.25, -69.35], [-65.0, -69.25], [-64.75, -69.35], [-64.5, -69.25], [-63.97, -69.47], [-63.75, -70.0], [-63.97, -70.53], [-64.5, -70.75], [-64.75, -70.65], [-64.82, -70.68], [-64.87, -70.8], [-64.47, -70.97], [-64.25, -71.5], [-64.47, -72.03], [-64.87, -72.2], [-64.75, -72.5], [-64.97, -73.03], [-65.5, -73.25], [-65.75, -73.15], [-66.0, -73.25], [-66.25, -73.15], [-66.32, -73.18], [-66.47, -73.53], [-67.0, -73.75], [-67.25, -73.65], [-67.5, -73.75], [-67.75, -73.65], [-67.82, -73.68], [-67.97, -74.03], [-68.5, -74.25], [-68.75, -74.15], [-69.0, -74.25], [-69.25, -74.15], [-69.32, -74.18], [-69.37, -74.3], [-68.97, -74.47], [-68.75, -75.0], [-68.97, -75.53], [-69.5, -75.75], [-69.75, -75.65], [-70.0, -75.75], [-70.25, -75.65], [-70.5, -75.75], [-71.03, -75.53], [-71.18, -75.18], [-71.25, -75.15], [-71.5, -75.25], [-71.75, -75.15], [-72.0, -75.25], [-72.25, -75.15], [-72.5, -75.25], [-72.75, -75.15], [-73.0, -75.25], [-73.25, -75.15], [-73.5, -75.25], [-73.75, -75.15], [-74.0, -75.25], [-74.53, -75.03], [-74.68, -74.68], [-74.75, -74.65], [-75.0, -74.75], [-75.25, -74.65], [-75.5, -74.75], [-75.75, -74.65], [-76.0, -74.75], [-76.53, -74.53], [-76.75, -74.0], [-76.65, -73.75], [-76.68, -73.68], [-77.03, -73.53], [-77.25, -73.0]]]]}, "2025-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.25, -73.0], [-77.03, -72.47], [-76.5, -72.25], [-76.25, -72.35], [-76.0, -72.25], [-75.75, -72.35], [-75.5, -72.25], [-75.25, -72.35], [-75.0, -72.25], [-74.75, -72.35], [-74.5, -72.25], [-74.25, -72.35], [-74.0, -72.25], [-73.75, -72.35], [-73.5, -72.25], [-73.25, -72.35], [-73.0, -72.25], [-72.75, -72.35], [-72.5, -72.25], [-72.25, -72.35], [-72.0, -72.25], [-71.75, -72.35], [-71.5, -72.25], [-71.25, -72.35], [-71.0, -72.25], [-70.75, -72.35], [-70.5, -72.25], [-70.25, -72.35], [-70.18, -72.32], [-70.03, -71.97], [-69.68, -71.82], [-69.53, -71.47], [-69.0, -71.25], [-68.75, -71.35], [-68.5, -71.25], [-68.25, -71.35], [-68.0, -71.25], [-67.75, -71.35], [-67.68, -71.32], [-67.54, -71.0], [-67.68, -70.68], [-68.03, -70.53], [-68.25, -70.0], [-68.03, -69.47], [-67.68, -69.32], [-67.53, -68.97], [-67.0, -68.75], [-66.47, -68.97], [-66.32, -69.32], [-66.25, -69.35], [-66.0, -69.25], [-65.75, -69.35], [-65.5, -69.25], [-65.25, -69.35], [-65.0, -69.25], [-64.75, -69.35], [-64.5, -69.25], [-63.97, -69.47], [-63.75, -70.0], [-63.97, -70.53], [-64.5, -70.75], [-64.75, -70.65], [-64.82, -70.68], [-64.87, -70.8], [-64.47, -70.97], [-64.25, -71.5], [-64.47, -72.03], [-64.87, -72.2], [-64.75, -72.5], [-64.97, -73.03], [-65.5, -73.25], [-65.75, -73.15], [-66.0, -73.25], [-66.25, -73.15], [-66.32, -73.18], [-66.47, -73.53], [-67.0, -73.75], [-67.25, -73.65], [-67.5, -73.75], [-67.75, -73.65], [-67.82, -73.68], [-67.97, -74.03], [-68.5, -74.25], [-68.75, -74.15], [-69.0, -74.25], [-69.25, -74.15], [-69.32, -74.18], [-69.37, -74.3], [-68.97, -74.47], [-68.75, -75.0], [-68.97, -75.53], [-69.5, -75.75], [-69.75, -75.65], [-70.0, -75.75], [-70.25, -75.65], [-70.5, -75.75], [-71.03, -75.53], [-71.18, -75.18], [-71.25, -75.15], [-71.5, -75.25], [-71.75, -75.15], [-72.0, -75.25], [-72.25, -75.15], [-72.5, -75.25], [-72.75, -75.15], [-73.0, -75.25], [-73.25, -75.15], [-73.5, -75.25], [-73.75, -75.15], [-74.0, -75.25], [-74.53, -75.03], [-74.68, -74.68], [-74.75, -74.65], [-75.0, -74.75], [-75.25, -74.65], [-75.5, -74.75], [-75.75, -74.65], [-76.0, -74.75], [-76.53, -74.53], [-76.75, -74.0], [-76.65, -73.75], [-76.68, -73.68], [-77.03, -73.53], [-77.25, -73.0]]]]}, "2025-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.03, -72.47], [-76.5, -72.25], [-76.25, -72.35], [-76.0, -72.25], [-75.75, -72.35], [-75.5, -72.25], [-75.25, -72.35], [-75.0, -72.25], [-74.75, -72.35], [-74.5, -72.25], [-74.25, -72.35], [-74.0, -72.25], [-73.75, -72.35], [-73.5, -72.25], [-73.25, -72.35], [-73.0, -72.25], [-72.75, -72.35], [-72.5, -72.25], [-72.25, -72.35], [-72.0, -72.25], [-71.75, -72.35], [-71.5, -72.25], [-71.25, -72.35], [-71.0, -72.25], [-70.75, -72.35], [-70.5, -72.25], [-70.25, -72.35], [-70.18, -72.32], [-70.03, -71.97], [-69.68, -71.82], [-69.53, -71.47], [-69.0, -71.25], [-68.75, -71.35], [-68.5, -71.25], [-68.25, -71.35], [-68.0, -71.25], [-67.75, -71.35], [-67.5, -71.25], [-67.25, -71.35], [-67.0, -71.25], [-66.75, -71.35], [-66.5, -71.25], [-65.97, -71.47], [-65.75, -72.0], [-65.97, -72.53], [-66.37, -72.7], [-66.25, -73.0], [-66.47, -73.53], [-67.0, -73.75], [-67.25, -73.65], [-67.5, -73.75], [-67.75, -73.65], [-68.0, -73.75], [-68.25, -73.65], [-68.5, -73.75], [-68.75, -73.65], [-68.82, -73.68], [-68.97, -74.03], [-69.32, -74.18], [-69.47, -74.53], [-69.82, -74.68], [-69.97, -75.03], [-70.5, -75.25], [-70.75, -75.15], [-71.0, -75.25], [-71.25, -75.15], [-71.5, -75.25], [-71.75, -75.15], [-72.0, -75.25], [-72.25, -75.15], [-72.5, -75.25], [-72.75, -75.15], [-73.0, -75.25], [-73.25, -75.15], [-73.5, -75.25], [-73.75, -75.15], [-74.0, -75.25], [-74.53, -75.03], [-74.68, -74.68], [-74.75, -74.65], [-75.0, -74.75], [-75.25, -74.65], [-75.5, -74.75], [-75.75, -74.65], [-76.0, -74.75], [-76.53, -74.53], [-76.75, -74.0], [-76.65, -73.75], [-76.68, -73.68], [-77.03, -73.53], [-77.25, -73.0], [-77.03, -72.47]]], [[[-67.53, -70.03], [-67.75, -69.5], [-67.53, -68.97], [-67.0, -68.75], [-66.47, -68.97], [-66.25, -69.5], [-66.47, -70.03], [-67.0, -70.25], [-67.53, -70.03]]]]}, "2025-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.03, -72.47], [-76.5, -72.25], [-76.25, -72.35], [-76.0, -72.25], [-75.75, -72.35], [-75.5, -72.25], [-75.25, -72.35], [-75.0, -72.25], [-74.75, -72.35], [-74.5, -72.25], [-74.25, -72.35], [-74.0, -72.25], [-73.75, -72.35], [-73.5, -72.25], [-73.25, -72.35], [-73.0, -72.25], [-72.75, -72.35], [-72.5, -72.25], [-72.25, -72.35], [-72.0, -72.25], [-71.75, -72.35], [-71.5, -72.25], [-71.25, -72.35], [-71.0, -72.25], [-70.47, -72.47], [-70.25, -73.0], [-70.47, -73.53], [-70.87, -73.7], [-70.75, -74.0], [-70.97, -74.53], [-71.32, -74.68], [-71.47, -75.03], [-72.0, -75.25], [-72.53, -75.03], [-72.68, -74.68], [-72.75, -74.65], [-72.82, -74.68], [-72.97, -75.03], [-73.5, -75.25], [-73.75, -75.15], [-74.0, -75.25], [-74.53, -75.03], [-74.68, -74.68], [-74.75, -74.65], [-75.0, -74.75], [-75.25, -74.65], [-75.5, -74.75], [-75.75, -74.65], [-76.0, -74.75], [-76.53, -74.53], [-76.75, -74.0], [-76.65, -73.75], [-76.68, -73.68], [-77.03, -73.53], [-77.25, -73.0], [-77.03, -72.47]]], [[[-68.53, -72.47], [-68.0, -72.25], [-67.75, -72.35], [-67.62, -72.3], [-67.75, -72.0], [-67.53, -71.47], [-67.0, -71.25], [-66.75, -71.35], [-66.5, -71.25], [-65.97, -71.47], [-65.75, -72.0], [-65.97, -72.53], [-66.37, -72.7], [-66.25, -73.0], [-66.47, -73.53], [-67.0, -73.75], [-67.25, -73.65], [-67.5, -73.75], [-67.75, -73.65], [-68.0, -73.75], [-68.53, -73.53], [-68.75, -73.0], [-68.53, -72.47]]], [[[-67.75, -69.5], [-67.53, -68.97], [-67.0, -68.75], [-66.47, -68.97], [-66.25, -69.5], [-66.47, -70.03], [-67.0, -70.25], [-67.53, -70.03], [-67.75, -69.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.324902833447936}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.642404666225821}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-4.895268279430923, -2.550762731378768, -3.468843759516119, -3.6686262747542173, -3.425988260904944]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.9562795003254791, 2.3811266581217865, 0.9876152038574446, 0.6996653238932709, -0.7538691202799441]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.624437879825723, 8.719454335203668, 7.775099979127195, 7.079890735385809, 7.2044972787959995]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.627643776678894, 11.324902833447936, 9.753624007895667, 9.645448962375212, 9.710666021602208]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4240204579206466, 1.8001210544049875, 1.6025851408133804, 1.3927309905098653, 1.385486753441709]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.641765252485565, 2.2798800043607206, 1.9456082530825398, 1.6530112866420477, 1.6394419182868]}}