{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:40.553373", "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": "2024-Dec-17_to_2024-Dec-19_301.0_49.0"}, "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": 2024120001784}, "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 17 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 19 2024"}, "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": 90242.97126481784}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 49.0}, "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": 301.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 297.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 304.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-63.53, 50.53], [-63.0, 50.75], [-62.75, 50.65], [-62.5, 50.75], [-62.25, 50.65], [-62.0, 50.75], [-61.5, 50.54], [-61.0, 50.75], [-60.75, 50.65], [-60.5, 50.75], [-59.97, 50.53], [-59.8, 50.12], [-59.5, 50.25], [-59.25, 50.15], [-59.18, 50.18], [-59.03, 50.53], [-58.68, 50.68], [-58.53, 51.03], [-58.18, 51.18], [-58.03, 51.53], [-57.68, 51.68], [-57.53, 52.03], [-57.0, 52.25], [-56.47, 52.03], [-56.32, 51.68], [-56.25, 51.65], [-56.0, 51.75], [-55.47, 51.53], [-55.32, 51.18], [-54.97, 51.03], [-54.75, 50.5], [-54.85, 50.25], [-54.75, 50.0], [-54.97, 49.47], [-55.5, 49.25], [-55.75, 49.35], [-56.0, 49.25], [-56.25, 49.35], [-56.5, 49.25], [-57.03, 49.47], [-57.2, 49.88], [-57.32, 49.82], [-57.47, 49.47], [-57.82, 49.32], [-57.85, 49.25], [-57.75, 49.0], [-57.97, 48.47], [-58.32, 48.32], [-58.47, 47.97], [-58.82, 47.82], [-58.85, 47.75], [-58.75, 47.5], [-58.97, 46.97], [-59.5, 46.75], [-59.75, 46.85], [-60.0, 46.75], [-60.53, 46.97], [-60.75, 47.5], [-60.65, 47.75], [-60.75, 48.0], [-60.65, 48.25], [-60.68, 48.32], [-60.75, 48.35], [-60.82, 48.32], [-60.97, 47.97], [-61.5, 47.75], [-61.75, 47.85], [-62.0, 47.75], [-62.53, 47.97], [-62.68, 48.32], [-63.03, 48.47], [-63.25, 49.0], [-63.15, 49.25], [-63.18, 49.32], [-63.53, 49.47], [-63.75, 50.0], [-63.53, 50.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America", "E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.52999999999997, 49.47], [-63.75, 50.0], [-63.52999999999997, 50.53], [-63.0, 50.75], [-62.75, 50.65], [-62.5, 50.75], [-62.25, 50.65], [-62.0, 50.75], [-61.5, 50.54], [-61.0, 50.75], [-60.75, 50.65], [-60.5, 50.75], [-59.97000000000003, 50.53], [-59.80000000000001, 50.12], [-59.5, 50.25], [-59.25, 50.15], [-59.18000000000001, 50.18], [-59.02999999999997, 50.53], [-58.68000000000001, 50.68], [-58.52999999999997, 51.03], [-58.18000000000001, 51.18], [-58.02999999999997, 51.53], [-57.68000000000001, 51.68], [-57.52999999999997, 52.03], [-57.0, 52.25], [-56.47000000000003, 52.03], [-56.31999999999999, 51.68], [-56.25, 51.65], [-56.0, 51.75], [-55.47000000000003, 51.53], [-55.31999999999999, 51.18], [-54.97000000000003, 51.03], [-54.75, 50.5], [-54.85000000000002, 50.25], [-54.75, 50.0], [-54.97000000000003, 49.47], [-55.5, 49.25], [-55.75, 49.35], [-56.0, 49.25], [-56.25, 49.35], [-56.5, 49.25], [-57.02999999999997, 49.47], [-57.19999999999999, 49.88], [-57.31999999999999, 49.82], [-57.47000000000003, 49.47], [-57.81999999999999, 49.32], [-57.85000000000002, 49.25], [-57.75, 49.0], [-57.97000000000003, 48.47], [-58.31999999999999, 48.32], [-58.47000000000003, 47.97], [-58.81999999999999, 47.82], [-58.85000000000002, 47.75], [-58.75, 47.5], [-58.97000000000003, 46.97], [-59.5, 46.75], [-59.75, 46.85], [-60.0, 46.75], [-60.52999999999997, 46.97], [-60.75, 47.5], [-60.64999999999998, 47.75], [-60.75, 48.0], [-60.64999999999998, 48.25], [-60.68000000000001, 48.32], [-60.75, 48.35], [-60.81999999999999, 48.32], [-60.97000000000003, 47.97], [-61.5, 47.75], [-61.75, 47.85], [-62.0, 47.75], [-62.52999999999997, 47.97], [-62.68000000000001, 48.32], [-63.02999999999997, 48.47], [-63.25, 49.0], [-63.14999999999998, 49.25], [-63.18000000000001, 49.32], [-63.52999999999997, 49.47]]]]}, "2024-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.52999999999997, 49.47], [-63.75, 50.0], [-63.52999999999997, 50.53], [-63.0, 50.75], [-62.75, 50.65], [-62.5, 50.75], [-62.25, 50.65], [-62.0, 50.75], [-61.5, 50.54], [-61.0, 50.75], [-60.75, 50.65], [-60.5, 50.75], [-59.97000000000003, 50.53], [-59.80000000000001, 50.12], [-59.5, 50.25], [-59.25, 50.15], [-59.18000000000001, 50.18], [-59.02999999999997, 50.53], [-58.68000000000001, 50.68], [-58.52999999999997, 51.03], [-58.18000000000001, 51.18], [-58.02999999999997, 51.53], [-57.68000000000001, 51.68], [-57.52999999999997, 52.03], [-57.0, 52.25], [-56.47000000000003, 52.03], [-56.31999999999999, 51.68], [-56.25, 51.65], [-56.0, 51.75], [-55.47000000000003, 51.53], [-55.31999999999999, 51.18], [-54.97000000000003, 51.03], [-54.75, 50.5], [-54.85000000000002, 50.25], [-54.75, 50.0], [-54.97000000000003, 49.47], [-55.5, 49.25], [-55.75, 49.35], [-56.0, 49.25], [-56.25, 49.35], [-56.5, 49.25], [-57.02999999999997, 49.47], [-57.19999999999999, 49.88], [-57.31999999999999, 49.82], [-57.47000000000003, 49.47], [-57.81999999999999, 49.32], [-57.85000000000002, 49.25], [-57.75, 49.0], [-57.97000000000003, 48.47], [-58.31999999999999, 48.32], [-58.47000000000003, 47.97], [-58.81999999999999, 47.82], [-58.85000000000002, 47.75], [-58.75, 47.5], [-58.97000000000003, 46.97], [-59.5, 46.75], [-59.75, 46.85], [-60.0, 46.75], [-60.52999999999997, 46.97], [-60.75, 47.5], [-60.64999999999998, 47.75], [-60.75, 48.0], [-60.64999999999998, 48.25], [-60.68000000000001, 48.32], [-60.75, 48.35], [-60.81999999999999, 48.32], [-60.97000000000003, 47.97], [-61.5, 47.75], [-61.75, 47.85], [-62.0, 47.75], [-62.52999999999997, 47.97], [-62.68000000000001, 48.32], [-63.02999999999997, 48.47], [-63.25, 49.0], [-63.14999999999998, 49.25], [-63.18000000000001, 49.32], [-63.52999999999997, 49.47]]]]}, "2024-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.52999999999997, 49.47], [-63.75, 50.0], [-63.52999999999997, 50.53], [-63.0, 50.75], [-62.75, 50.65], [-62.5, 50.75], [-62.25, 50.65], [-62.0, 50.75], [-61.5, 50.54], [-61.0, 50.75], [-60.75, 50.65], [-60.5, 50.75], [-59.97000000000003, 50.53], [-59.80000000000001, 50.12], [-59.5, 50.25], [-59.25, 50.15], [-59.18000000000001, 50.18], [-59.02999999999997, 50.53], [-58.68000000000001, 50.68], [-58.52999999999997, 51.03], [-58.18000000000001, 51.18], [-58.02999999999997, 51.53], [-57.68000000000001, 51.68], [-57.52999999999997, 52.03], [-57.0, 52.25], [-56.47000000000003, 52.03], [-56.31999999999999, 51.68], [-56.25, 51.65], [-56.0, 51.75], [-55.47000000000003, 51.53], [-55.31999999999999, 51.18], [-54.97000000000003, 51.03], [-54.75, 50.5], [-54.85000000000002, 50.25], [-54.75, 50.0], [-54.97000000000003, 49.47], [-55.5, 49.25], [-55.75, 49.35], [-56.0, 49.25], [-56.25, 49.35], [-56.5, 49.25], [-57.02999999999997, 49.47], [-57.19999999999999, 49.88], [-57.31999999999999, 49.82], [-57.47000000000003, 49.47], [-57.81999999999999, 49.32], [-57.85000000000002, 49.25], [-57.75, 49.0], [-57.97000000000003, 48.47], [-58.31999999999999, 48.32], [-58.47000000000003, 47.97], [-58.81999999999999, 47.82], [-58.85000000000002, 47.75], [-58.75, 47.5], [-58.97000000000003, 46.97], [-59.5, 46.75], [-59.75, 46.85], [-60.0, 46.75], [-60.52999999999997, 46.97], [-60.75, 47.5], [-60.64999999999998, 47.75], [-60.75, 48.0], [-60.64999999999998, 48.25], [-60.68000000000001, 48.32], [-60.75, 48.35], [-60.81999999999999, 48.32], [-60.97000000000003, 47.97], [-61.5, 47.75], [-61.75, 47.85], [-62.0, 47.75], [-62.52999999999997, 47.97], [-62.68000000000001, 48.32], [-63.02999999999997, 48.47], [-63.25, 49.0], [-63.14999999999998, 49.25], [-63.18000000000001, 49.32], [-63.52999999999997, 49.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.637420617643329}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.580575971791526}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.306989655671316, 3.852357398139077, 1.9291364599157532]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.5279785156250227, 5.019534047444665, 3.673078155517601]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.1894839015358345, 6.727615400734323, 4.824628613104423]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.1918416472084346, 9.637420617643329, 7.598536442286502]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4167938809428064, 1.8226205985208468, 1.2875836316819367]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6429034656105659, 2.0295395476103866, 1.4281818715053833]}}