{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:55.199940", "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-Sep-06_to_2017-Sep-09_256.5_58.5"}, "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": 2017090001393}, "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 06 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 09 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 65467.69901221931}, "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": []}, "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": 58.5}, "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": 256.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "256.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 253.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 259.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.5, 59.25], [-102.97, 59.03], [-102.75, 58.5], [-102.97, 57.97], [-103.5, 57.75], [-104.03, 57.97], [-104.25, 58.5], [-104.03, 59.03], [-103.5, 59.25]]]]}, "2017-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.75, 60.0], [-106.53, 60.53], [-106.0, 60.75], [-105.75, 60.65], [-105.68, 60.68], [-105.53, 61.03], [-105.0, 61.25], [-104.75, 61.15], [-104.5, 61.25], [-104.25, 61.15], [-104.0, 61.25], [-103.75, 61.15], [-103.5, 61.25], [-103.25, 61.15], [-103.0, 61.25], [-102.75, 61.15], [-102.5, 61.25], [-102.25, 61.15], [-102.0, 61.25], [-101.75, 61.15], [-101.68, 61.18], [-101.53, 61.53], [-101.0, 61.75], [-100.47, 61.53], [-100.25, 61.0], [-100.35, 60.75], [-100.32, 60.68], [-99.97, 60.53], [-99.75, 60.0], [-99.85, 59.75], [-99.75, 59.5], [-99.97, 58.97], [-100.5, 58.75], [-100.75, 58.85], [-100.82, 58.82], [-100.97, 58.47], [-101.5, 58.25], [-101.75, 58.35], [-102.0, 58.25], [-102.25, 58.35], [-102.32, 58.32], [-102.47, 57.97], [-102.82, 57.82], [-102.97, 57.47], [-103.5, 57.25], [-103.75, 57.35], [-104.0, 57.25], [-104.53, 57.47], [-104.75, 58.0], [-104.53, 58.53], [-104.18, 58.68], [-104.15, 58.75], [-104.18, 58.82], [-104.25, 58.85], [-104.5, 58.75], [-104.75, 58.85], [-105.0, 58.75], [-105.25, 58.85], [-105.5, 58.75], [-106.03, 58.97], [-106.18, 59.32], [-106.53, 59.47], [-106.75, 60.0]]]]}, "2017-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.75, 60.0], [-106.53, 60.53], [-106.0, 60.75], [-105.75, 60.65], [-105.68, 60.68], [-105.53, 61.03], [-105.0, 61.25], [-104.75, 61.15], [-104.5, 61.25], [-104.25, 61.15], [-104.0, 61.25], [-103.75, 61.15], [-103.5, 61.25], [-103.25, 61.15], [-103.0, 61.25], [-102.75, 61.15], [-102.5, 61.25], [-102.25, 61.15], [-102.0, 61.25], [-101.75, 61.15], [-101.68, 61.18], [-101.53, 61.53], [-101.0, 61.75], [-100.47, 61.53], [-100.25, 61.0], [-100.35, 60.75], [-100.32, 60.68], [-99.97, 60.53], [-99.75, 60.0], [-99.85, 59.75], [-99.75, 59.5], [-99.97, 58.97], [-100.5, 58.75], [-100.75, 58.85], [-100.82, 58.82], [-100.97, 58.47], [-101.5, 58.25], [-101.75, 58.35], [-102.0, 58.25], [-102.25, 58.35], [-102.32, 58.32], [-102.47, 57.97], [-102.82, 57.82], [-102.97, 57.47], [-103.5, 57.25], [-103.75, 57.35], [-104.0, 57.25], [-104.53, 57.47], [-104.75, 58.0], [-104.53, 58.53], [-104.18, 58.68], [-104.15, 58.75], [-104.18, 58.82], [-104.25, 58.85], [-104.5, 58.75], [-104.75, 58.85], [-105.0, 58.75], [-105.25, 58.85], [-105.5, 58.75], [-106.03, 58.97], [-106.18, 59.32], [-106.53, 59.47], [-106.75, 60.0]]]]}, "2017-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.75, 60.0], [-106.53, 60.53], [-106.0, 60.75], [-105.75, 60.65], [-105.68, 60.68], [-105.53, 61.03], [-105.0, 61.25], [-104.75, 61.15], [-104.5, 61.25], [-104.25, 61.15], [-104.0, 61.25], [-103.75, 61.15], [-103.5, 61.25], [-103.25, 61.15], [-103.0, 61.25], [-102.75, 61.15], [-102.5, 61.25], [-102.25, 61.15], [-102.0, 61.25], [-101.75, 61.15], [-101.68, 61.18], [-101.53, 61.53], [-101.0, 61.75], [-100.47, 61.53], [-100.25, 61.0], [-100.35, 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"description": "The daily evolution of mean t2m.", "value": [14.812446107902701, 13.968598767195033, 18.315937708244803, 13.693230918179609]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.812446107902701, 15.955356187179973, 19.146000328446405, 16.206431731914563]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.531629915137842, 5.22637879341652, 9.81129760673523, 5.465536434115749]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.531629915137842, 5.896639202623021, 11.075306041364229, 7.543445770492838]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3922920521549889, 1.4912860485674062, 2.7723348493518873, 1.5253314710302202]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3922920521549889, 1.7720543671532953, 3.01032792837273, 2.06555564939641]}}