{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:34.280451", "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": "2015-Jul-30_to_2015-Aug-04_294.0_59.5"}, "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": 2015070003198}, "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 30 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 04 2015"}, "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": 60596.091074793876}, "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": ["Davis Strait", "Hudson Strait"]}, "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": 59.5}, "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": 294.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "294.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 290.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 298.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 58.25}, "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": {"2015-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.25, 59.0], [-70.03, 59.53], [-69.5, 59.75], [-68.97, 59.53], [-68.82, 59.18], [-68.75, 59.15], [-68.68, 59.18], [-68.65, 59.25], [-68.75, 59.5], [-68.53, 60.03], [-68.0, 60.25], [-67.75, 60.15], [-67.68, 60.18], [-67.53, 60.53], [-67.18, 60.68], [-67.03, 61.03], [-66.5, 61.25], [-66.25, 61.15], [-66.0, 61.25], [-65.75, 61.15], [-65.5, 61.25], [-65.25, 61.15], [-65.0, 61.25], [-64.47, 61.03], [-64.25, 60.5], [-64.46, 60.0], [-64.32, 59.68], [-63.97, 59.53], [-63.75, 59.0], [-63.97, 58.47], [-64.5, 58.25], [-64.75, 58.35], [-65.0, 58.25], [-65.25, 58.35], [-65.5, 58.25], [-65.75, 58.35], [-66.0, 58.25], [-66.25, 58.35], [-66.5, 58.25], [-66.75, 58.35], [-66.82, 58.32], [-66.97, 57.97], [-67.5, 57.75], [-67.75, 57.85], [-68.0, 57.75], [-68.25, 57.85], [-68.5, 57.75], [-68.75, 57.85], [-69.0, 57.75], [-69.53, 57.97], [-69.68, 58.32], [-70.03, 58.47], [-70.25, 59.0]]]]}, "2015-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.25, 59.0], [-70.03, 59.53], [-69.5, 59.75], [-68.97, 59.53], [-68.82, 59.18], [-68.75, 59.15], [-68.68, 59.18], [-68.65, 59.25], [-68.75, 59.5], [-68.53, 60.03], [-68.0, 60.25], [-67.75, 60.15], [-67.68, 60.18], [-67.53, 60.53], [-67.18, 60.68], [-67.03, 61.03], [-66.68, 61.18], [-66.53, 61.53], [-66.0, 61.75], [-65.75, 61.65], [-65.5, 61.75], [-65.25, 61.65], [-65.0, 61.75], [-64.75, 61.65], [-64.5, 61.75], [-64.25, 61.65], [-64.0, 61.75], [-63.75, 61.65], [-63.5, 61.75], [-63.25, 61.65], [-63.0, 61.75], [-62.75, 61.65], [-62.5, 61.75], [-61.97, 61.53], [-61.82, 61.18], [-61.47, 61.03], [-61.25, 60.5], [-61.47, 59.97], [-62.0, 59.75], [-62.25, 59.85], [-62.5, 59.75], [-62.75, 59.85], [-63.0, 59.75], [-63.53, 59.97], [-63.68, 60.32], [-63.75, 60.35], [-64.0, 60.25], [-64.25, 60.35], [-64.32, 60.32], [-64.46, 60.0], [-64.32, 59.68], [-63.97, 59.53], [-63.75, 59.0], [-63.97, 58.47], [-64.5, 58.25], [-64.75, 58.35], [-65.0, 58.25], [-65.25, 58.35], [-65.5, 58.25], [-65.75, 58.35], [-66.0, 58.25], [-66.25, 58.35], [-66.5, 58.25], [-66.75, 58.35], [-66.82, 58.32], [-66.97, 57.97], [-67.5, 57.75], [-67.75, 57.85], [-68.0, 57.75], [-68.25, 57.85], [-68.5, 57.75], [-68.75, 57.85], [-69.0, 57.75], [-69.53, 57.97], [-69.68, 58.32], [-70.03, 58.47], [-70.25, 59.0]]]]}, "2015-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.25, 59.0], [-70.03, 59.53], [-69.5, 59.75], [-68.97, 59.53], [-68.82, 59.18], [-68.75, 59.15], [-68.68, 59.18], [-68.65, 59.25], [-68.75, 59.5], [-68.53, 60.03], [-68.0, 60.25], [-67.75, 60.15], [-67.68, 60.18], [-67.53, 60.53], [-67.18, 60.68], [-67.03, 61.03], [-66.68, 61.18], [-66.53, 61.53], [-66.0, 61.75], [-65.75, 61.65], [-65.5, 61.75], [-65.25, 61.65], [-65.0, 61.75], [-64.75, 61.65], [-64.5, 61.75], [-64.25, 61.65], [-64.0, 61.75], [-63.75, 61.65], [-63.5, 61.75], [-63.25, 61.65], [-63.0, 61.75], [-62.75, 61.65], [-62.5, 61.75], [-61.97, 61.53], [-61.82, 61.18], [-61.47, 61.03], [-61.25, 60.5], [-61.47, 59.97], [-62.0, 59.75], [-62.25, 59.85], [-62.5, 59.75], [-62.75, 59.85], [-63.0, 59.75], [-63.53, 59.97], [-63.68, 60.32], [-63.75, 60.35], [-64.0, 60.25], [-64.25, 60.35], [-64.32, 60.32], [-64.46, 60.0], [-64.32, 59.68], [-63.97, 59.53], [-63.75, 59.0], [-63.97, 58.47], [-64.5, 58.25], [-64.75, 58.35], [-65.0, 58.25], [-65.25, 58.35], [-65.5, 58.25], [-65.75, 58.35], [-66.0, 58.25], [-66.25, 58.35], [-66.5, 58.25], [-66.75, 58.35], [-66.82, 58.32], [-66.97, 57.97], [-67.5, 57.75], [-67.75, 57.85], [-68.0, 57.75], [-68.25, 57.85], [-68.5, 57.75], [-68.75, 57.85], [-69.0, 57.75], [-69.53, 57.97], [-69.68, 58.32], [-70.03, 58.47], [-70.25, 59.0]]]]}, "2015-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.65, 59.75], [-66.75, 60.0], [-66.65, 60.25], [-66.75, 60.5], [-66.65, 60.75], [-66.75, 61.0], [-66.53, 61.53], [-66.0, 61.75], [-65.75, 61.65], [-65.5, 61.75], [-65.25, 61.65], [-65.0, 61.75], [-64.75, 61.65], [-64.5, 61.75], [-64.25, 61.65], [-64.0, 61.75], [-63.75, 61.65], [-63.5, 61.75], [-63.25, 61.65], [-63.0, 61.75], [-62.75, 61.65], [-62.5, 61.75], [-61.97, 61.53], [-61.82, 61.18], [-61.47, 61.03], [-61.25, 60.5], [-61.47, 59.97], [-62.0, 59.75], [-62.25, 59.85], [-62.5, 59.75], [-62.75, 59.85], [-63.0, 59.75], [-63.53, 59.97], [-63.68, 60.32], [-63.75, 60.35], [-64.0, 60.25], [-64.25, 60.35], [-64.5, 60.25], [-64.75, 60.35], [-64.82, 60.32], [-64.85, 60.25], [-64.75, 60.0], [-64.97, 59.47], [-65.32, 59.32], [-65.35, 59.25], [-65.25, 59.0], [-65.47, 58.47], [-66.0, 58.25], [-66.53, 58.47], [-66.75, 59.0], [-66.65, 59.25], [-66.75, 59.5], [-66.65, 59.75]]]]}, "2015-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.0, 60.25], [-65.47, 60.03], [-65.25, 59.5], [-65.35, 59.25], [-65.25, 59.0], [-65.47, 58.47], [-66.0, 58.25], [-66.53, 58.47], [-66.75, 59.0], [-66.65, 59.25], [-66.75, 59.5], [-66.53, 60.03], [-66.0, 60.25]]], [[[-66.25, 61.0], [-66.03, 61.53], [-65.5, 61.75], [-65.25, 61.65], [-65.0, 61.75], [-64.75, 61.65], [-64.5, 61.75], [-64.25, 61.65], [-64.0, 61.75], [-63.75, 61.65], [-63.5, 61.75], [-63.25, 61.65], [-63.0, 61.75], [-62.47, 61.53], [-62.32, 61.18], [-61.97, 61.03], [-61.75, 60.5], [-61.97, 59.97], [-62.5, 59.75], [-62.75, 59.85], [-63.0, 59.75], [-63.53, 59.97], [-63.68, 60.32], [-63.75, 60.35], [-64.0, 60.25], [-64.25, 60.35], [-64.5, 60.25], [-64.75, 60.35], [-65.0, 60.25], [-65.25, 60.35], [-65.5, 60.25], [-66.03, 60.47], [-66.25, 61.0]]]]}, "2015-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.0, 60.25], [-65.47, 60.03], [-65.25, 59.5], [-65.47, 58.97], [-66.0, 58.75], [-66.53, 58.97], [-66.75, 59.5], [-66.53, 60.03], [-66.0, 60.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.309510692330264}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.974065990156779}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.498792910141844, 11.139686525058039, 9.65394250897981, 6.4040668313112405, 6.3552285346544295, 8.77178848263344]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.51303913941541, 20.41117451781355, 18.569899319220667, 11.57922493778318, 11.129203470653351, 8.77178848263344]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.671317083105284, 5.132689291687975, 3.6762939622735846, 2.0449226472784736, 2.007999055204368, 3.3339418937820255]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.928044669254689, 9.309510692330264, 6.696041669681222, 4.595349352588869, 4.165444327337127, 3.3339418937820255]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8176046601872755, 2.491804159103329, 1.8691796166796502, 1.5332975600984644, 1.4584547848000666, 1.5022034479749764]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.5320980874155508, 3.7671668386068866, 2.454736151349118, 1.7064024765338728, 1.6392291407615507, 1.5022034479749764]}}