{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:17.805053", "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-Jul-08_to_2025-Jul-13_278.5_65.0"}, "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": 2025070001731}, "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": "July 08 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 13 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 102932.06665161782}, "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", "Hudson Strait", "The Northwestern Passages"]}, "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": 65.0}, "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": 278.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "278.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 273.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 281.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 62.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 67.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.75, 66.0], [-86.53, 66.53], [-86.0, 66.75], [-85.75, 66.65], [-85.5, 66.75], [-85.25, 66.65], [-85.0, 66.75], [-84.75, 66.65], [-84.5, 66.75], [-84.25, 66.65], [-84.0, 66.75], [-83.75, 66.65], [-83.5, 66.75], [-83.25, 66.65], [-83.0, 66.75], [-82.75, 66.65], [-82.5, 66.75], [-82.25, 66.65], [-82.18, 66.68], [-82.03, 67.03], [-81.5, 67.25], [-81.25, 67.15], [-81.0, 67.25], [-80.47, 67.03], [-80.25, 66.5], [-80.35, 66.25], [-80.32, 66.18], [-80.25, 66.15], [-80.0, 66.25], [-79.75, 66.15], [-79.5, 66.25], [-78.97, 66.03], [-78.75, 65.5], [-78.85, 65.25], [-78.82, 65.18], [-78.47, 65.03], [-78.32, 64.68], [-77.97, 64.53], [-77.75, 64.0], [-77.97, 63.47], [-78.32, 63.32], [-78.35, 63.25], [-78.25, 63.0], [-78.47, 62.47], [-78.82, 62.32], [-78.97, 61.97], [-79.5, 61.75], [-80.03, 61.97], [-80.18, 62.32], [-80.5, 62.46], [-81.0, 62.25], [-81.25, 62.35], [-81.5, 62.25], [-81.75, 62.35], [-82.0, 62.25], [-82.25, 62.35], [-82.5, 62.25], [-83.03, 62.47], [-83.18, 62.82], [-83.25, 62.85], [-83.5, 62.75], [-83.75, 62.85], [-84.0, 62.75], [-84.53, 62.97], [-84.75, 63.5], [-84.53, 64.03], [-84.0, 64.25], [-83.75, 64.15], [-83.5, 64.25], [-83.25, 64.15], [-83.0, 64.25], [-83.53, 64.47], [-83.68, 64.82], [-83.75, 64.85], [-84.0, 64.75], [-84.25, 64.85], [-84.5, 64.75], [-85.03, 64.97], [-85.18, 65.32], [-85.25, 65.35], [-85.32, 65.32], [-85.47, 64.97], [-85.82, 64.82], [-85.97, 64.47], [-86.5, 64.25], [-87.03, 64.47], [-87.25, 65.0], [-87.03, 65.53], [-86.68, 65.68], [-86.65, 65.75], [-86.75, 66.0]], [[-82.75, 64.15], [-82.5, 64.25], [-82.75, 64.35], [-83.0, 64.25], [-82.75, 64.15]], [[-82.25, 64.15], [-82.12, 64.2], [-82.18, 64.32], [-82.25, 64.35], [-82.5, 64.25], [-82.25, 64.15]]]]}, "2025-07-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.75, 66.0], [-86.53, 66.53], [-86.0, 66.75], [-85.75, 66.65], [-85.5, 66.75], [-85.25, 66.65], [-85.0, 66.75], [-84.75, 66.65], [-84.5, 66.75], [-84.25, 66.65], [-84.0, 66.75], [-83.75, 66.65], [-83.5, 66.75], [-83.25, 66.65], [-83.0, 66.75], [-82.75, 66.65], [-82.5, 66.75], [-82.25, 66.65], [-82.18, 66.68], [-82.03, 67.03], [-81.5, 67.25], [-81.25, 67.15], [-81.18, 67.18], [-81.03, 67.53], [-80.68, 67.68], [-80.53, 68.03], [-80.0, 68.25], [-79.75, 68.15], [-79.5, 68.25], [-78.97, 68.03], [-78.82, 67.68], [-78.47, 67.53], [-78.32, 67.18], [-77.97, 67.03], [-77.75, 66.5], [-77.85, 66.25], [-77.75, 66.0], [-77.97, 65.47], [-78.32, 65.32], [-78.46, 65.0], [-78.32, 64.68], [-77.97, 64.53], [-77.75, 64.0], [-77.97, 63.47], [-78.32, 63.32], [-78.35, 63.25], [-78.25, 63.0], [-78.47, 62.47], [-78.82, 62.32], [-78.97, 61.97], [-79.5, 61.75], [-80.03, 61.97], [-80.18, 62.32], [-80.5, 62.46], [-81.0, 62.25], [-81.25, 62.35], [-81.5, 62.25], [-81.75, 62.35], [-82.0, 62.25], [-82.25, 62.35], [-82.5, 62.25], [-83.03, 62.47], [-83.18, 62.82], [-83.25, 62.85], [-83.5, 62.75], [-83.75, 62.85], [-84.0, 62.75], [-84.53, 62.97], [-84.75, 63.5], [-84.53, 64.03], [-84.0, 64.25], [-83.75, 64.15], [-83.5, 64.25], [-83.25, 64.15], [-83.0, 64.25], [-83.53, 64.47], [-83.68, 64.82], [-83.75, 64.85], [-84.0, 64.75], [-84.25, 64.85], [-84.5, 64.75], [-85.03, 64.97], [-85.18, 65.32], [-85.25, 65.35], [-85.32, 65.32], [-85.47, 64.97], [-85.82, 64.82], [-85.97, 64.47], [-86.5, 64.25], [-87.03, 64.47], [-87.25, 65.0], [-87.03, 65.53], [-86.68, 65.68], [-86.65, 65.75], [-86.75, 66.0]], [[-82.75, 64.15], [-82.5, 64.25], [-82.75, 64.35], [-83.0, 64.25], [-82.75, 64.15]], [[-82.25, 64.15], [-82.12, 64.2], [-82.18, 64.32], [-82.25, 64.35], [-82.5, 64.25], [-82.25, 64.15]]]]}, "2025-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.75, 66.0], [-86.53, 66.53], [-86.0, 66.75], [-85.75, 66.65], [-85.5, 66.75], [-85.25, 66.65], [-85.0, 66.75], [-84.75, 66.65], [-84.5, 66.75], [-84.25, 66.65], [-84.0, 66.75], [-83.75, 66.65], [-83.5, 66.75], [-83.25, 66.65], [-83.0, 66.75], [-82.75, 66.65], [-82.5, 66.75], [-82.25, 66.65], [-82.18, 66.68], [-82.03, 67.03], [-81.5, 67.25], [-81.25, 67.15], [-81.18, 67.18], [-81.03, 67.53], [-80.68, 67.68], [-80.53, 68.03], [-80.0, 68.25], [-79.75, 68.15], [-79.5, 68.25], [-78.97, 68.03], [-78.82, 67.68], [-78.47, 67.53], [-78.32, 67.18], [-77.97, 67.03], [-77.75, 66.5], [-77.85, 66.25], [-77.75, 66.0], [-77.97, 65.47], [-78.32, 65.32], [-78.46, 65.0], [-78.32, 64.68], [-77.97, 64.53], [-77.75, 64.0], [-77.97, 63.47], [-78.32, 63.32], [-78.35, 63.25], [-78.25, 63.0], [-78.47, 62.47], [-78.82, 62.32], [-78.97, 61.97], [-79.5, 61.75], [-80.03, 61.97], [-80.18, 62.32], [-80.5, 62.46], [-81.0, 62.25], [-81.25, 62.35], [-81.5, 62.25], [-81.75, 62.35], [-82.0, 62.25], [-82.25, 62.35], [-82.5, 62.25], [-83.03, 62.47], [-83.18, 62.82], [-83.25, 62.85], [-83.5, 62.75], [-83.75, 62.85], [-84.0, 62.75], [-84.53, 62.97], [-84.75, 63.5], [-84.53, 64.03], [-84.0, 64.25], [-83.75, 64.15], [-83.5, 64.25], [-83.25, 64.15], [-83.0, 64.25], [-83.53, 64.47], [-83.68, 64.82], [-83.75, 64.85], [-84.0, 64.75], [-84.25, 64.85], [-84.5, 64.75], [-85.03, 64.97], [-85.18, 65.32], [-85.25, 65.35], [-85.32, 65.32], [-85.47, 64.97], [-85.82, 64.82], [-85.97, 64.47], [-86.5, 64.25], [-87.03, 64.47], [-87.25, 65.0], [-87.03, 65.53], [-86.68, 65.68], [-86.65, 65.75], [-86.75, 66.0]], [[-82.75, 64.15], [-82.5, 64.25], [-82.75, 64.35], [-83.0, 64.25], [-82.75, 64.15]], [[-82.25, 64.15], [-82.12, 64.2], [-82.18, 64.32], [-82.25, 64.35], [-82.5, 64.25], [-82.25, 64.15]]]]}, "2025-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-84.75, 63.5], [-84.53, 64.03], [-84.0, 64.25], [-83.75, 64.15], [-83.5, 64.25], [-83.25, 64.15], [-83.0, 64.25], [-82.75, 64.15], [-82.5, 64.25], [-83.03, 64.47], [-83.18, 64.82], [-83.25, 64.85], [-83.5, 64.75], [-84.03, 64.97], [-84.25, 65.5], [-84.03, 66.03], [-83.5, 66.25], [-83.25, 66.15], [-83.0, 66.25], [-82.75, 66.15], [-82.68, 66.18], [-82.53, 66.53], [-82.0, 66.75], [-81.75, 66.65], [-81.5, 66.75], [-81.25, 66.65], [-81.12, 66.7], [-81.25, 67.0], [-81.03, 67.53], [-80.68, 67.68], [-80.53, 68.03], [-80.0, 68.25], [-79.75, 68.15], [-79.5, 68.25], [-78.97, 68.03], [-78.82, 67.68], [-78.47, 67.53], [-78.32, 67.18], [-77.97, 67.03], [-77.75, 66.5], [-77.85, 66.25], [-77.75, 66.0], [-77.97, 65.47], [-78.32, 65.32], [-78.46, 65.0], [-78.32, 64.68], [-77.97, 64.53], [-77.75, 64.0], [-77.97, 63.47], [-78.5, 63.25], [-78.75, 63.35], [-78.82, 63.32], [-78.85, 63.25], [-78.75, 63.0], [-78.97, 62.47], [-79.5, 62.25], [-80.03, 62.47], [-80.18, 62.82], [-80.25, 62.85], [-80.32, 62.82], [-80.47, 62.47], [-81.0, 62.25], [-81.25, 62.35], [-81.5, 62.25], [-81.75, 62.35], [-82.0, 62.25], [-82.53, 62.47], [-82.68, 62.82], [-82.75, 62.85], [-83.0, 62.75], [-83.25, 62.85], [-83.5, 62.75], [-83.75, 62.85], [-84.0, 62.75], [-84.53, 62.97], [-84.75, 63.5]], [[-81.97, 64.03], [-81.82, 63.68], [-81.75, 63.65], [-81.5, 63.75], [-81.25, 63.65], [-81.18, 63.68], [-81.15, 63.75], [-81.18, 63.82], [-81.53, 63.97], [-81.68, 64.32], [-81.75, 64.35], [-82.0, 64.25], [-82.25, 64.35], [-82.5, 64.25], [-81.97, 64.03]]], [[[-86.75, 66.0], [-86.53, 66.53], [-86.0, 66.75], [-85.75, 66.65], [-85.5, 66.75], [-85.25, 66.65], [-85.0, 66.75], [-84.47, 66.53], [-84.25, 66.0], [-84.47, 65.47], [-85.0, 65.25], [-85.25, 65.35], [-85.5, 65.25], [-85.75, 65.35], [-86.0, 65.25], [-86.53, 65.47], [-86.75, 66.0]]]]}, "2025-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-84.25, 65.5], [-84.03, 66.03], [-83.5, 66.25], [-83.25, 66.15], [-83.0, 66.25], [-82.75, 66.15], [-82.5, 66.25], [-82.25, 66.15], [-82.0, 66.25], [-81.75, 66.15], [-81.5, 66.25], [-81.25, 66.15], [-81.18, 66.18], [-81.03, 66.53], [-80.5, 66.75], [-80.25, 66.65], [-80.0, 66.75], [-79.75, 66.65], [-79.5, 66.75], [-78.97, 66.53], [-78.75, 66.0], [-78.85, 65.75], [-78.75, 65.5], [-78.97, 64.97], [-79.37, 64.8], [-79.25, 64.5], [-79.47, 63.97], [-80.0, 63.75], [-80.25, 63.85], [-80.5, 63.75], [-80.75, 63.85], [-81.0, 63.75], [-81.53, 63.97], [-81.68, 64.32], [-81.75, 64.35], [-82.0, 64.25], [-82.25, 64.35], [-82.5, 64.25], [-83.03, 64.47], [-83.18, 64.82], [-83.25, 64.85], [-83.5, 64.75], [-84.03, 64.97], [-84.25, 65.5]]], [[[-86.25, 66.0], [-86.03, 66.53], [-85.5, 66.75], [-85.25, 66.65], [-85.0, 66.75], [-84.47, 66.53], [-84.25, 66.0], [-84.47, 65.47], [-85.0, 65.25], [-85.25, 65.35], [-85.5, 65.25], [-86.03, 65.47], [-86.25, 66.0]]]]}, "2025-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.0, 66.25], [-80.75, 66.15], [-80.5, 66.25], [-79.97, 66.03], [-79.75, 65.5], [-79.97, 64.97], [-80.32, 64.82], [-80.47, 64.47], [-81.0, 64.25], [-81.25, 64.35], [-81.5, 64.25], [-82.03, 64.47], [-82.25, 65.0], [-82.03, 65.53], [-81.68, 65.68], [-81.53, 66.03], [-81.0, 66.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.687484128737083}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.328250643488887}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.925705977343966, 7.257243366482896, 6.64484443825512, 5.21700932993059, 4.9941574096679915, 4.479675547281943]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.472613271077478, 14.1873769124349, 11.511940256754599, 8.60441360473635, 6.2783370971679915, 5.023580169677757]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.504392300734928, 4.095157718340994, 3.411150782001081, 2.4103178201793463, 2.4379296897230707, 2.2066014674466317]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.273971161572604, 7.687484128737083, 6.007895356604024, 3.6680338970128332, 3.4337012506801443, 2.5219056726029976]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.270790624708489, 2.882264520373761, 2.396479790618288, 1.8105234260655634, 1.7943261008547111, 1.6968936754038275]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [3.550221547020198, 4.940337122759957, 4.238336746018508, 2.597744809940626, 2.367522920577478, 1.7658796353431372]}}