{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:31.188098", "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": "2022-Sep-18_to_2022-Sep-22_287.5_38.0"}, "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": 2022090002234}, "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 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 22 2022"}, "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": 76131.44148631484}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["North 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": 38.0}, "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": 287.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "287.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 283.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.18, 38.18], [-74.03, 38.53], [-73.68, 38.68], [-73.53, 39.03], [-73.0, 39.25], [-72.47, 39.03], [-72.32, 38.68], [-71.97, 38.53], [-71.75, 38.0], [-71.97, 37.47], [-72.32, 37.32], [-72.47, 36.97], [-73.0, 36.75], [-73.25, 36.85], [-73.32, 36.82], [-73.47, 36.47], [-74.0, 36.25], [-74.25, 36.35], [-74.5, 36.25], [-75.03, 36.47], [-75.25, 37.0], [-75.03, 37.53], [-74.68, 37.68], [-74.53, 38.03], [-74.18, 38.18]]]]}, "2022-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.65, 37.75], [-76.75, 38.0], [-76.53, 38.53], [-76.0, 38.75], [-75.5, 38.54], [-75.18, 38.68], [-75.03, 39.03], [-74.5, 39.25], [-74.25, 39.15], [-74.0, 39.25], [-73.5, 39.04], [-73.0, 39.25], [-72.47, 39.03], [-72.32, 38.68], [-71.97, 38.53], [-71.82, 38.18], [-71.47, 38.03], [-71.25, 37.5], [-71.35, 37.25], [-71.25, 37.0], [-71.47, 36.47], [-72.0, 36.25], [-72.25, 36.35], [-72.5, 36.25], [-72.75, 36.35], [-73.0, 36.25], [-73.5, 36.46], [-74.0, 36.25], [-74.25, 36.35], [-74.5, 36.25], [-74.8, 36.38], [-74.97, 35.97], [-75.5, 35.75], [-76.03, 35.97], [-76.18, 36.32], [-76.53, 36.47], [-76.75, 37.0], [-76.65, 37.25], [-76.75, 37.5], [-76.65, 37.75]]]]}, "2022-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.65, 37.75], [-76.75, 38.0], [-76.53, 38.53], [-76.0, 38.75], [-75.5, 38.54], [-75.18, 38.68], [-75.03, 39.03], [-74.5, 39.25], [-74.25, 39.15], [-74.0, 39.25], [-73.5, 39.04], [-73.0, 39.25], [-72.47, 39.03], [-72.32, 38.68], [-71.97, 38.53], [-71.82, 38.18], [-71.47, 38.03], [-71.25, 37.5], [-71.35, 37.25], [-71.25, 37.0], [-71.35, 36.75], [-71.25, 36.5], [-71.35, 36.25], [-71.25, 36.0], [-71.47, 35.47], [-72.0, 35.25], [-72.25, 35.35], [-72.5, 35.25], [-73.03, 35.47], [-73.25, 36.0], [-73.15, 36.25], [-73.18, 36.32], [-73.5, 36.46], [-74.0, 36.25], [-74.25, 36.35], [-74.5, 36.25], [-74.75, 36.35], [-74.82, 36.32], [-74.97, 35.97], [-75.5, 35.75], [-76.03, 35.97], [-76.18, 36.32], [-76.53, 36.47], [-76.75, 37.0], [-76.65, 37.25], [-76.75, 37.5], [-76.65, 37.75]]]]}, "2022-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.65, 37.75], [-76.75, 38.0], [-76.53, 38.53], [-76.0, 38.75], [-75.5, 38.54], [-75.18, 38.68], [-75.03, 39.03], [-74.5, 39.25], [-74.25, 39.15], [-74.0, 39.25], [-73.47, 39.03], [-73.32, 38.68], [-73.25, 38.65], [-73.0, 38.75], [-72.75, 38.65], [-72.5, 38.75], [-71.97, 38.53], [-71.82, 38.18], [-71.47, 38.03], [-71.25, 37.5], [-71.35, 37.25], [-71.25, 37.0], [-71.35, 36.75], [-71.25, 36.5], [-71.35, 36.25], [-71.25, 36.0], [-71.47, 35.47], [-72.0, 35.25], [-72.25, 35.35], [-72.5, 35.25], [-73.03, 35.47], [-73.25, 36.0], [-73.15, 36.25], [-73.18, 36.32], [-73.53, 36.47], [-73.68, 36.82], [-73.75, 36.85], [-74.0, 36.75], [-74.3, 36.88], [-74.47, 36.47], [-74.82, 36.32], [-74.97, 35.97], [-75.5, 35.75], [-76.03, 35.97], [-76.18, 36.32], [-76.53, 36.47], [-76.75, 37.0], [-76.65, 37.25], [-76.75, 37.5], [-76.65, 37.75]]]]}, "2022-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.65, 37.75], [-76.75, 38.0], [-76.53, 38.53], [-76.0, 38.75], [-75.5, 38.54], [-75.18, 38.68], [-75.03, 39.03], [-74.5, 39.25], [-74.25, 39.15], [-74.0, 39.25], [-73.47, 39.03], [-73.32, 38.68], [-73.25, 38.65], [-73.0, 38.75], [-72.75, 38.65], [-72.5, 38.75], [-71.97, 38.53], [-71.82, 38.18], [-71.47, 38.03], [-71.25, 37.5], [-71.35, 37.25], [-71.25, 37.0], [-71.35, 36.75], [-71.25, 36.5], [-71.35, 36.25], [-71.25, 36.0], [-71.47, 35.47], [-72.0, 35.25], [-72.25, 35.35], [-72.5, 35.25], [-73.03, 35.47], [-73.25, 36.0], [-73.15, 36.25], [-73.18, 36.32], [-73.53, 36.47], [-73.68, 36.82], [-73.75, 36.85], [-74.0, 36.75], [-74.3, 36.88], [-74.47, 36.47], [-74.82, 36.32], [-74.97, 35.97], [-75.5, 35.75], [-76.03, 35.97], [-76.18, 36.32], [-76.53, 36.47], [-76.75, 37.0], [-76.65, 37.25], [-76.75, 37.5], [-76.65, 37.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.719575315209795}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.449516589865025}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.670375526837688, 24.989778666742552, 25.180676393541148, 24.8355706443283, 25.123462425292757]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.089923702068404, 26.372356293573887, 26.514431469253168, 26.10821078017011, 26.333571403661438]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.1128607365264305, 2.5317541539059243, 2.5395508140111525, 2.2197179466529593, 2.614418898451908]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.3409664983755647, 3.417036563668262, 3.2992460661799896, 3.281698819984115, 3.719575315209795]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.288498481546385, 1.5369749809098068, 1.5808560518984265, 1.3528745495943144, 1.5657979274696128]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3740380248079045, 2.019476008687665, 1.982558672062253, 1.6055149683268437, 2.1337808349255685]}}