{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:03.795598", "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": "2017-May-08_to_2017-May-12_262.5_66.5"}, "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": 2017050001522}, "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": "May 08 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 12 2017"}, "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": 129993.72949483633}, "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", "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": ["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": 66.5}, "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": 262.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "262.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 253.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 265.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 64.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 68.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.25, 66.0], [-107.03, 66.53], [-106.5, 66.75], [-106.25, 66.65], [-106.0, 66.75], [-105.75, 66.65], [-105.5, 66.75], [-105.25, 66.65], [-105.0, 66.75], [-104.75, 66.65], [-104.5, 66.75], [-104.25, 66.65], [-104.0, 66.75], [-103.75, 66.65], [-103.5, 66.75], [-102.97, 66.53], [-102.75, 66.0], [-102.85, 65.75], [-102.82, 65.68], [-102.75, 65.65], [-102.5, 65.75], [-101.97, 65.53], [-101.75, 65.0], [-101.97, 64.47], [-102.32, 64.32], [-102.47, 63.97], [-103.0, 63.75], [-103.53, 63.97], [-103.68, 64.32], [-103.75, 64.35], [-104.0, 64.25], [-104.25, 64.35], [-104.5, 64.25], [-104.75, 64.35], [-105.0, 64.25], [-105.25, 64.35], [-105.5, 64.25], [-106.03, 64.47], [-106.18, 64.82], [-106.53, 64.97], [-106.68, 65.32], [-107.03, 65.47], [-107.25, 66.0]]]]}, "2017-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.25, 66.0], [-107.03, 66.53], [-106.5, 66.75], [-106.25, 66.65], [-106.0, 66.75], [-105.75, 66.65], [-105.5, 66.75], [-105.25, 66.65], [-105.0, 66.75], [-104.75, 66.65], [-104.5, 66.75], [-104.25, 66.65], [-104.18, 66.68], [-104.03, 67.03], [-103.5, 67.25], [-103.25, 67.15], [-103.0, 67.25], [-102.75, 67.15], [-102.5, 67.25], [-102.25, 67.15], [-102.18, 67.18], [-102.03, 67.53], [-101.5, 67.75], [-101.25, 67.65], [-101.0, 67.75], [-100.75, 67.65], [-100.68, 67.68], [-100.53, 68.03], [-100.0, 68.25], [-99.75, 68.15], [-99.5, 68.25], [-99.25, 68.15], [-99.0, 68.25], [-98.75, 68.15], [-98.68, 68.18], [-98.53, 68.53], [-98.18, 68.68], [-98.03, 69.03], [-97.5, 69.25], [-97.25, 69.15], [-97.0, 69.25], [-96.5, 69.04], [-96.0, 69.25], [-95.75, 69.15], [-95.5, 69.25], [-95.25, 69.15], [-95.0, 69.25], [-94.47, 69.03], [-94.25, 68.5], [-94.47, 67.97], [-95.0, 67.75], [-95.25, 67.85], [-95.32, 67.82], [-95.35, 67.75], [-95.25, 67.5], [-95.47, 66.97], [-95.82, 66.82], [-95.97, 66.47], [-96.5, 66.25], [-96.75, 66.35], [-96.82, 66.32], [-96.85, 66.25], [-96.75, 66.0], [-96.97, 65.47], [-97.5, 65.25], [-97.75, 65.35], [-97.82, 65.32], [-97.97, 64.97], [-98.5, 64.75], [-98.75, 64.85], [-98.82, 64.82], [-98.97, 64.47], [-99.5, 64.25], [-99.75, 64.35], [-100.0, 64.25], [-100.25, 64.35], [-100.5, 64.25], [-100.75, 64.35], [-101.0, 64.25], [-101.25, 64.35], [-101.5, 64.25], [-101.75, 64.35], [-102.0, 64.25], [-102.25, 64.35], [-102.32, 64.32], [-102.47, 63.97], [-103.0, 63.75], [-103.53, 63.97], [-103.68, 64.32], [-103.75, 64.35], [-104.0, 64.25], [-104.25, 64.35], [-104.5, 64.25], [-104.75, 64.35], [-105.0, 64.25], [-105.25, 64.35], [-105.5, 64.25], [-106.03, 64.47], [-106.18, 64.82], [-106.53, 64.97], [-106.68, 65.32], [-107.03, 65.47], [-107.25, 66.0]]]]}, "2017-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.25, 66.0], [-107.03, 66.53], [-106.5, 66.75], [-106.25, 66.65], [-106.0, 66.75], [-105.75, 66.65], [-105.5, 66.75], [-105.25, 66.65], [-105.0, 66.75], [-104.75, 66.65], [-104.5, 66.75], [-104.25, 66.65], [-104.18, 66.68], [-104.03, 67.03], [-103.5, 67.25], [-103.25, 67.15], [-103.0, 67.25], [-102.75, 67.15], [-102.5, 67.25], [-102.25, 67.15], [-102.18, 67.18], [-102.03, 67.53], [-101.5, 67.75], [-101.25, 67.65], [-101.0, 67.75], [-100.75, 67.65], [-100.68, 67.68], [-100.53, 68.03], [-100.0, 68.25], [-99.75, 68.15], [-99.5, 68.25], [-99.25, 68.15], [-99.0, 68.25], [-98.75, 68.15], [-98.68, 68.18], [-98.53, 68.53], [-98.18, 68.68], [-98.03, 69.03], [-97.5, 69.25], [-97.25, 69.15], [-97.0, 69.25], [-96.5, 69.04], [-96.0, 69.25], [-95.75, 69.15], [-95.5, 69.25], [-95.25, 69.15], [-95.0, 69.25], [-94.47, 69.03], [-94.25, 68.5], [-94.37, 68.2], [-93.97, 68.03], [-93.75, 67.5], [-93.85, 67.25], [-93.75, 67.0], [-93.97, 66.47], [-94.5, 66.25], [-94.75, 66.35], [-95.0, 66.25], [-95.25, 66.35], [-95.32, 66.32], [-95.47, 65.97], [-95.82, 65.82], [-95.97, 65.47], [-96.5, 65.25], [-96.75, 65.35], [-97.0, 65.25], [-97.25, 65.35], [-97.32, 65.32], [-97.47, 64.97], [-98.0, 64.75], [-98.25, 64.85], [-98.5, 64.75], [-98.75, 64.85], [-98.82, 64.82], [-98.97, 64.47], [-99.5, 64.25], [-99.75, 64.35], [-100.0, 64.25], [-100.25, 64.35], [-100.5, 64.25], [-100.75, 64.35], [-101.0, 64.25], [-101.25, 64.35], [-101.5, 64.25], [-101.75, 64.35], [-102.0, 64.25], [-102.25, 64.35], [-102.32, 64.32], [-102.47, 63.97], [-103.0, 63.75], [-103.53, 63.97], [-103.68, 64.32], [-103.75, 64.35], [-104.0, 64.25], [-104.25, 64.35], [-104.5, 64.25], [-104.75, 64.35], [-105.0, 64.25], [-105.25, 64.35], [-105.5, 64.25], [-106.03, 64.47], [-106.18, 64.82], [-106.53, 64.97], [-106.68, 65.32], [-107.03, 65.47], [-107.25, 66.0]]]]}, "2017-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.25, 66.0], [-107.03, 66.53], [-106.5, 66.75], [-106.25, 66.65], [-106.0, 66.75], [-105.75, 66.65], [-105.5, 66.75], [-105.25, 66.65], [-105.0, 66.75], [-104.75, 66.65], [-104.5, 66.75], [-104.25, 66.65], [-104.18, 66.68], [-104.03, 67.03], [-103.5, 67.25], [-103.25, 67.15], [-103.0, 67.25], [-102.75, 67.15], [-102.5, 67.25], [-102.25, 67.15], [-102.18, 67.18], [-102.03, 67.53], [-101.5, 67.75], [-101.25, 67.65], [-101.0, 67.75], [-100.75, 67.65], [-100.68, 67.68], [-100.53, 68.03], [-100.0, 68.25], [-99.75, 68.15], [-99.5, 68.25], [-99.25, 68.15], [-99.0, 68.25], [-98.75, 68.15], [-98.68, 68.18], [-98.53, 68.53], [-98.18, 68.68], [-98.03, 69.03], [-97.5, 69.25], [-97.25, 69.15], [-97.0, 69.25], [-96.5, 69.04], [-96.0, 69.25], [-95.75, 69.15], [-95.5, 69.25], [-95.25, 69.15], [-95.0, 69.25], [-94.47, 69.03], [-94.25, 68.5], [-94.37, 68.2], [-93.97, 68.03], [-93.75, 67.5], [-93.85, 67.25], [-93.75, 67.0], [-93.97, 66.47], [-94.5, 66.25], [-94.75, 66.35], [-95.0, 66.25], [-95.25, 66.35], [-95.32, 66.32], [-95.47, 65.97], [-95.82, 65.82], [-95.97, 65.47], [-96.5, 65.25], [-96.75, 65.35], [-97.0, 65.25], [-97.25, 65.35], [-97.32, 65.32], [-97.47, 64.97], [-98.0, 64.75], [-98.25, 64.85], [-98.5, 64.75], [-98.75, 64.85], [-98.82, 64.82], [-98.97, 64.47], [-99.5, 64.25], [-99.75, 64.35], [-100.0, 64.25], [-100.25, 64.35], [-100.5, 64.25], [-100.75, 64.35], [-101.0, 64.25], [-101.25, 64.35], [-101.5, 64.25], [-101.75, 64.35], [-102.0, 64.25], [-102.25, 64.35], [-102.32, 64.32], [-102.47, 63.97], [-103.0, 63.75], [-103.53, 63.97], [-103.68, 64.32], [-103.75, 64.35], [-104.0, 64.25], [-104.25, 64.35], [-104.5, 64.25], [-104.75, 64.35], [-105.0, 64.25], [-105.25, 64.35], [-105.5, 64.25], [-106.03, 64.47], [-106.18, 64.82], [-106.53, 64.97], [-106.68, 65.32], [-107.03, 65.47], [-107.25, 66.0]]]]}, "2017-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.03, 64.47], [-102.25, 65.0], [-102.03, 65.53], [-101.5, 65.75], [-101.25, 65.65], [-101.0, 65.75], [-100.75, 65.65], [-100.5, 65.75], [-100.25, 65.65], [-100.18, 65.68], [-100.03, 66.03], [-99.68, 66.18], [-99.53, 66.53], [-99.0, 66.75], [-98.75, 66.65], [-98.68, 66.68], [-98.53, 67.03], [-98.0, 67.25], [-97.75, 67.15], [-97.5, 67.25], [-97.25, 67.15], [-97.18, 67.18], [-97.03, 67.53], [-96.68, 67.68], [-96.53, 68.03], [-96.0, 68.25], [-95.75, 68.15], [-95.5, 68.25], [-95.25, 68.15], [-95.0, 68.25], [-94.75, 68.15], [-94.5, 68.25], [-93.97, 68.03], [-93.75, 67.5], [-93.85, 67.25], [-93.75, 67.0], [-93.97, 66.47], [-94.5, 66.25], [-94.75, 66.35], [-95.0, 66.25], [-95.25, 66.35], [-95.32, 66.32], [-95.47, 65.97], [-95.82, 65.82], [-95.97, 65.47], [-96.5, 65.25], [-96.75, 65.35], [-97.0, 65.25], [-97.25, 65.35], [-97.32, 65.32], [-97.47, 64.97], [-98.0, 64.75], [-98.25, 64.85], [-98.5, 64.75], [-98.75, 64.85], [-98.82, 64.82], [-98.97, 64.47], [-99.5, 64.25], [-99.75, 64.35], [-100.0, 64.25], [-100.25, 64.35], [-100.5, 64.25], [-100.75, 64.35], [-101.0, 64.25], [-101.25, 64.35], [-101.5, 64.25], [-102.03, 64.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.418878201309099}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.211792983129673}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.6359382501140658, -1.4872597827755385, -1.547413944051641, -1.0532102374981491, -1.6589853567996329]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.3026881029893502, 0.34810529246703936, -0.3649237760129722, 0.1839851103418937, -0.9174075574241556]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.606178350350333, 7.588308736111319, 7.20066973104432, 7.22980411300204, 6.430938874385406]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.012313057426979, 9.418878201309099, 8.31317851073203, 9.127735614656274, 7.8260403104515035]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4033281884909203, 1.7609400022074284, 1.6597810954322978, 1.6859622061656117, 1.5022387339320815]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4757878093973749, 2.1885302589749234, 1.868036705072174, 2.0070627776999794, 1.6925585490920114]}}