{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:36:35.513287", "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-Sep-21_to_2023-Sep-23_242.5_61.0"}, "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": 2023090001704}, "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 21 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 23 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": 69766.27045941279}, "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.W.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": []}, "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": 61.0}, "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": 242.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "242.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 235.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 242.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-125.25, 58.5], [-125.03, 59.03], [-124.68, 59.18], [-124.53, 59.53], [-124.0, 59.75], [-123.75, 59.65], [-123.5, 59.75], [-123.25, 59.65], [-123.18, 59.68], [-123.03, 60.03], [-122.68, 60.18], [-122.53, 60.53], [-122.18, 60.68], [-122.03, 61.03], [-121.68, 61.18], [-121.65, 61.25], [-121.75, 61.5], [-121.53, 62.03], [-121.0, 62.25], [-120.75, 62.15], [-120.5, 62.25], [-120.25, 62.15], [-120.0, 62.25], [-119.75, 62.15], [-119.5, 62.25], [-119.25, 62.15], [-119.0, 62.25], [-118.75, 62.15], [-118.5, 62.25], [-118.25, 62.15], [-118.0, 62.25], [-117.47, 62.03], [-117.32, 61.68], [-116.97, 61.53], [-116.75, 61.0], [-116.97, 60.47], [-117.32, 60.32], [-117.47, 59.97], [-118.0, 59.75], [-118.25, 59.85], [-118.5, 59.75], [-118.75, 59.85], [-119.0, 59.75], [-119.25, 59.85], [-119.5, 59.75], [-119.8, 59.88], [-119.97, 59.47], [-120.5, 59.25], [-120.75, 59.35], [-120.82, 59.32], [-120.97, 58.97], [-121.37, 58.8], [-121.25, 58.5], [-121.35, 58.25], [-121.25, 58.0], [-121.47, 57.47], [-121.82, 57.32], [-121.97, 56.97], [-122.5, 56.75], [-123.03, 56.97], [-123.18, 57.32], [-123.25, 57.35], [-123.5, 57.25], [-123.75, 57.35], [-124.0, 57.25], [-124.53, 57.47], [-124.68, 57.82], [-125.03, 57.97], [-125.25, 58.5]]]]}, "2023-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-125.25, 58.5], [-125.03, 59.03], [-124.68, 59.18], [-124.53, 59.53], [-124.0, 59.75], [-123.75, 59.65], [-123.5, 59.75], [-123.25, 59.65], [-123.18, 59.68], [-123.03, 60.03], [-122.68, 60.18], [-122.53, 60.53], [-122.18, 60.68], [-122.03, 61.03], [-121.68, 61.18], [-121.65, 61.25], [-121.75, 61.5], [-121.53, 62.03], [-121.0, 62.25], [-120.75, 62.15], [-120.5, 62.25], [-120.25, 62.15], [-120.0, 62.25], [-119.75, 62.15], [-119.5, 62.25], [-119.25, 62.15], [-119.0, 62.25], [-118.75, 62.15], [-118.5, 62.25], [-118.25, 62.15], [-118.0, 62.25], [-117.47, 62.03], [-117.32, 61.68], [-116.97, 61.53], [-116.75, 61.0], [-116.97, 60.47], [-117.32, 60.32], [-117.47, 59.97], [-118.0, 59.75], [-118.25, 59.85], [-118.5, 59.75], [-118.75, 59.85], [-119.0, 59.75], [-119.25, 59.85], [-119.5, 59.75], [-119.8, 59.88], [-119.97, 59.47], [-120.5, 59.25], [-120.75, 59.35], [-120.82, 59.32], [-120.97, 58.97], [-121.37, 58.8], [-121.25, 58.5], [-121.35, 58.25], [-121.25, 58.0], [-121.47, 57.47], [-121.82, 57.32], [-121.97, 56.97], [-122.5, 56.75], [-123.03, 56.97], [-123.18, 57.32], [-123.25, 57.35], [-123.5, 57.25], [-123.75, 57.35], [-124.0, 57.25], [-124.53, 57.47], [-124.68, 57.82], [-125.03, 57.97], [-125.25, 58.5]]]]}, "2023-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-125.25, 58.5], [-125.03, 59.03], [-124.68, 59.18], [-124.53, 59.53], [-124.0, 59.75], [-123.75, 59.65], [-123.5, 59.75], [-123.25, 59.65], [-123.18, 59.68], [-123.03, 60.03], [-122.68, 60.18], [-122.53, 60.53], [-122.18, 60.68], [-122.03, 61.03], [-121.68, 61.18], [-121.65, 61.25], [-121.75, 61.5], [-121.53, 62.03], [-121.0, 62.25], [-120.75, 62.15], [-120.5, 62.25], [-120.25, 62.15], [-120.0, 62.25], [-119.75, 62.15], [-119.5, 62.25], [-119.25, 62.15], [-119.0, 62.25], [-118.75, 62.15], [-118.5, 62.25], [-118.25, 62.15], [-118.0, 62.25], [-117.47, 62.03], [-117.32, 61.68], [-116.97, 61.53], [-116.75, 61.0], [-116.97, 60.47], [-117.32, 60.32], [-117.47, 59.97], [-118.0, 59.75], [-118.25, 59.85], [-118.5, 59.75], [-118.75, 59.85], [-119.0, 59.75], [-119.25, 59.85], [-119.5, 59.75], [-119.8, 59.88], [-119.97, 59.47], [-120.5, 59.25], [-120.75, 59.35], [-120.82, 59.32], [-120.97, 58.97], [-121.37, 58.8], [-121.25, 58.5], [-121.35, 58.25], [-121.25, 58.0], [-121.47, 57.47], [-121.82, 57.32], [-121.97, 56.97], [-122.5, 56.75], [-123.03, 56.97], [-123.18, 57.32], [-123.25, 57.35], [-123.5, 57.25], [-123.75, 57.35], [-124.0, 57.25], [-124.53, 57.47], [-124.68, 57.82], [-125.03, 57.97], [-125.25, 58.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.647960959710304}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.7239485063850175}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.748910110228792, 15.513216264912558, 13.273033684708025]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.26765621413432, 18.406430668223777, 16.071594182653655]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.421551511345055, 8.38101141808295, 6.369282589727047]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.536735864128559, 9.647960959710304, 8.569835264763014]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3837835048422609, 2.1405033905103723, 1.628133705845349]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5821379546983194, 2.4462888968516565, 2.186687843992881]}}