{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:58.156612", "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-Apr-08_to_2023-Apr-10_267.5_59.0"}, "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": 2023040001586}, "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 08 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 10 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": 113753.9707108922}, "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": ["Canada"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": ["Hudson Bay"]}, "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": 59.0}, "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": 267.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "267.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 263.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 270.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.65, 58.75], [-96.75, 59.0], [-96.65, 59.25], [-96.75, 59.5], [-96.53, 60.03], [-96.0, 60.25], [-95.75, 60.15], [-95.5, 60.25], [-95.25, 60.15], [-95.18, 60.18], [-95.03, 60.53], [-94.68, 60.68], [-94.53, 61.03], [-94.0, 61.25], [-93.75, 61.15], [-93.5, 61.25], [-93.25, 61.15], [-93.0, 61.25], [-92.75, 61.15], [-92.5, 61.25], [-92.25, 61.15], [-92.0, 61.25], [-91.75, 61.15], [-91.5, 61.25], [-90.97, 61.03], [-90.82, 60.68], [-90.47, 60.53], [-90.25, 60.0], [-90.35, 59.75], [-90.32, 59.68], [-89.97, 59.53], [-89.75, 59.0], [-89.85, 58.75], [-89.75, 58.5], [-89.85, 58.25], [-89.82, 58.18], [-89.47, 58.03], [-89.32, 57.68], [-88.97, 57.53], [-88.75, 57.0], [-88.97, 56.47], [-89.32, 56.32], [-89.47, 55.97], [-90.0, 55.75], [-90.53, 55.97], [-90.68, 56.32], [-90.75, 56.35], [-91.0, 56.25], [-91.25, 56.35], [-91.5, 56.25], [-91.75, 56.35], [-92.0, 56.25], [-92.53, 56.47], [-92.68, 56.82], [-92.75, 56.85], [-93.0, 56.75], [-93.53, 56.97], [-93.68, 57.32], [-94.03, 57.47], [-94.18, 57.82], [-94.25, 57.85], [-94.5, 57.75], [-94.75, 57.85], [-94.82, 57.82], [-94.97, 57.47], [-95.5, 57.25], [-95.75, 57.35], [-96.0, 57.25], [-96.53, 57.47], [-96.75, 58.0], [-96.65, 58.25], [-96.75, 58.5], [-96.65, 58.75]]]]}, "2023-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.65, 58.75], [-96.75, 59.0], [-96.65, 59.25], [-96.75, 59.5], [-96.53, 60.03], [-96.0, 60.25], [-95.75, 60.15], [-95.5, 60.25], [-95.25, 60.15], [-95.18, 60.18], [-95.03, 60.53], [-94.68, 60.68], [-94.53, 61.03], [-94.0, 61.25], [-93.75, 61.15], [-93.5, 61.25], [-93.25, 61.15], [-93.0, 61.25], [-92.75, 61.15], [-92.5, 61.25], [-92.25, 61.15], [-92.0, 61.25], [-91.75, 61.15], [-91.5, 61.25], [-90.97, 61.03], [-90.82, 60.68], [-90.47, 60.53], [-90.25, 60.0], [-90.35, 59.75], [-90.32, 59.68], [-89.97, 59.53], [-89.75, 59.0], [-89.85, 58.75], [-89.75, 58.5], [-89.85, 58.25], [-89.82, 58.18], [-89.47, 58.03], [-89.32, 57.68], [-88.97, 57.53], [-88.75, 57.0], [-88.97, 56.47], [-89.32, 56.32], [-89.47, 55.97], [-90.0, 55.75], [-90.53, 55.97], [-90.68, 56.32], [-90.75, 56.35], [-91.0, 56.25], [-91.25, 56.35], [-91.5, 56.25], [-91.75, 56.35], [-92.0, 56.25], [-92.53, 56.47], [-92.68, 56.82], [-92.75, 56.85], [-93.0, 56.75], [-93.53, 56.97], [-93.68, 57.32], [-94.03, 57.47], [-94.18, 57.82], [-94.25, 57.85], [-94.5, 57.75], [-94.75, 57.85], [-94.82, 57.82], [-94.97, 57.47], [-95.5, 57.25], [-95.75, 57.35], [-96.0, 57.25], [-96.53, 57.47], [-96.75, 58.0], [-96.65, 58.25], [-96.75, 58.5], [-96.65, 58.75]]]]}, "2023-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.65, 58.75], [-96.75, 59.0], [-96.65, 59.25], [-96.75, 59.5], [-96.53, 60.03], [-96.0, 60.25], [-95.75, 60.15], [-95.5, 60.25], [-95.25, 60.15], [-95.18, 60.18], [-95.03, 60.53], [-94.68, 60.68], [-94.53, 61.03], [-94.0, 61.25], [-93.75, 61.15], [-93.5, 61.25], [-93.25, 61.15], [-93.0, 61.25], [-92.75, 61.15], [-92.5, 61.25], [-92.25, 61.15], [-92.0, 61.25], [-91.75, 61.15], [-91.5, 61.25], [-90.97, 61.03], [-90.82, 60.68], [-90.47, 60.53], [-90.25, 60.0], [-90.35, 59.75], [-90.32, 59.68], [-89.97, 59.53], [-89.75, 59.0], [-89.85, 58.75], [-89.75, 58.5], [-89.85, 58.25], [-89.82, 58.18], [-89.47, 58.03], [-89.32, 57.68], [-88.97, 57.53], [-88.75, 57.0], [-88.97, 56.47], [-89.32, 56.32], [-89.47, 55.97], [-90.0, 55.75], [-90.53, 55.97], [-90.68, 56.32], [-90.75, 56.35], [-91.0, 56.25], [-91.25, 56.35], [-91.5, 56.25], [-91.75, 56.35], [-92.0, 56.25], [-92.53, 56.47], [-92.68, 56.82], [-92.75, 56.85], [-93.0, 56.75], [-93.53, 56.97], [-93.68, 57.32], [-94.03, 57.47], [-94.18, 57.82], [-94.25, 57.85], [-94.5, 57.75], [-94.75, 57.85], [-94.82, 57.82], [-94.97, 57.47], [-95.5, 57.25], [-95.75, 57.35], [-96.0, 57.25], [-96.53, 57.47], [-96.75, 58.0], [-96.65, 58.25], [-96.75, 58.5], [-96.65, 58.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 16.19339524571842}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 10.433815895954087}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-2.3419156207980905, 1.4132833978930535, -1.9636573402969475]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.7231502943166674, 5.346861281345582, 1.5557677766636857]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.238135955753437, 12.818703058222416, 9.244608673886397]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [12.137072559679382, 16.19339524571842, 11.246360212385241]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6022661910019262, 2.2162179661367065, 1.6319670073887835]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.780681895890011, 2.4297822074294797, 1.8210607553389135]}}