{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:13.016745", "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": "2012-Apr-02_to_2012-Apr-09_296.0_64.5"}, "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": 2012040001728}, "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": "April 02 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 09 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 51071.56738799393}, "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"]}, "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": 64.5}, "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": 296.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "296.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 292.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 298.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 63.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 67.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.53, 66.47], [-67.75, 67.0], [-67.53, 67.53], [-67.0, 67.75], [-66.75, 67.65], [-66.5, 67.75], [-66.25, 67.65], [-66.0, 67.75], [-65.47, 67.53], [-65.32, 67.18], [-65.25, 67.15], [-65.0, 67.25], [-64.75, 67.15], [-64.5, 67.25], [-64.25, 67.15], [-64.0, 67.25], [-63.47, 67.03], [-63.32, 66.68], [-63.25, 66.65], [-63.0, 66.75], [-62.75, 66.65], [-62.5, 66.75], [-62.25, 66.65], [-62.0, 66.75], [-61.75, 66.65], [-61.5, 66.75], [-60.97, 66.53], [-60.75, 66.0], [-60.97, 65.47], [-61.5, 65.25], [-61.75, 65.35], [-62.0, 65.25], [-62.25, 65.35], [-62.5, 65.25], [-62.75, 65.35], [-62.87, 65.3], [-62.75, 65.0], [-62.97, 64.47], [-63.32, 64.32], [-63.47, 63.97], [-64.0, 63.75], [-64.53, 63.97], [-64.68, 64.32], [-65.03, 64.47], [-65.25, 65.0], [-65.15, 65.25], [-65.18, 65.32], [-65.53, 65.47], [-65.68, 65.82], [-65.75, 65.85], [-66.0, 65.75], [-66.53, 65.97], [-66.68, 66.32], [-66.75, 66.35], [-67.0, 66.25], [-67.53, 66.47]]]]}, "2012-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.53, 66.47], [-67.75, 67.0], [-67.53, 67.53], [-67.0, 67.75], [-66.75, 67.65], [-66.5, 67.75], [-66.25, 67.65], [-66.0, 67.75], [-65.47, 67.53], [-65.32, 67.18], [-65.25, 67.15], [-65.0, 67.25], [-64.75, 67.15], [-64.5, 67.25], [-64.25, 67.15], [-64.0, 67.25], [-63.47, 67.03], [-63.32, 66.68], [-63.25, 66.65], [-63.0, 66.75], [-62.75, 66.65], [-62.5, 66.75], [-62.25, 66.65], [-62.0, 66.75], [-61.75, 66.65], [-61.5, 66.75], [-60.97, 66.53], [-60.75, 66.0], [-60.85, 65.75], [-60.75, 65.5], [-60.97, 64.97], [-61.32, 64.82], [-61.47, 64.47], [-62.0, 64.25], [-62.25, 64.35], [-62.5, 64.25], [-62.75, 64.35], [-62.82, 64.32], [-62.97, 63.97], [-63.5, 63.75], [-63.75, 63.85], [-64.0, 63.75], [-64.53, 63.97], [-64.68, 64.32], [-65.03, 64.47], [-65.25, 65.0], [-65.15, 65.25], [-65.18, 65.32], [-65.53, 65.47], [-65.68, 65.82], [-65.75, 65.85], [-66.0, 65.75], [-66.53, 65.97], [-66.68, 66.32], [-66.75, 66.35], [-67.0, 66.25], [-67.53, 66.47]]]]}, "2012-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.53, 66.47], [-67.75, 67.0], [-67.53, 67.53], [-67.0, 67.75], [-66.75, 67.65], [-66.5, 67.75], [-66.25, 67.65], [-66.0, 67.75], [-65.47, 67.53], [-65.32, 67.18], [-65.25, 67.15], [-65.0, 67.25], [-64.75, 67.15], [-64.5, 67.25], [-64.25, 67.15], [-64.0, 67.25], [-63.47, 67.03], [-63.32, 66.68], [-63.25, 66.65], [-63.0, 66.75], [-62.75, 66.65], [-62.5, 66.75], [-62.25, 66.65], [-62.0, 66.75], [-61.75, 66.65], [-61.5, 66.75], [-60.97, 66.53], [-60.75, 66.0], [-60.85, 65.75], [-60.75, 65.5], [-60.97, 64.97], [-61.32, 64.82], [-61.47, 64.47], [-62.0, 64.25], [-62.25, 64.35], [-62.5, 64.25], [-62.75, 64.35], [-62.82, 64.32], [-62.97, 63.97], [-63.5, 63.75], [-63.75, 63.85], [-64.0, 63.75], [-64.53, 63.97], [-64.68, 64.32], [-65.03, 64.47], [-65.25, 65.0], [-65.15, 65.25], [-65.18, 65.32], [-65.53, 65.47], [-65.68, 65.82], [-65.75, 65.85], [-66.0, 65.75], [-66.53, 65.97], [-66.68, 66.32], [-66.75, 66.35], [-67.0, 66.25], [-67.53, 66.47]]]]}, "2012-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.53, 65.53], [-64.18, 65.68], [-64.03, 66.03], [-63.5, 66.25], [-63.75, 66.35], [-64.0, 66.25], [-64.53, 66.47], [-64.75, 67.0], [-64.53, 67.53], [-64.0, 67.75], [-63.75, 67.65], [-63.5, 67.75], [-62.97, 67.53], [-62.75, 67.0], [-62.93, 66.57], [-62.5, 66.75], [-62.25, 66.65], [-62.0, 66.75], [-61.75, 66.65], [-61.5, 66.75], [-60.97, 66.53], [-60.75, 66.0], [-60.85, 65.75], [-60.75, 65.5], [-60.97, 64.97], [-61.32, 64.82], [-61.47, 64.47], [-62.0, 64.25], [-62.25, 64.35], [-62.5, 64.25], [-62.75, 64.35], [-62.82, 64.32], [-62.97, 63.97], [-63.5, 63.75], [-63.75, 63.85], [-64.0, 63.75], [-64.53, 63.97], [-64.75, 64.5], [-64.65, 64.75], [-64.75, 65.0], [-64.53, 65.53]], [[-63.25, 66.15], [-63.18, 66.18], [-63.07, 66.43], [-63.5, 66.25], [-63.25, 66.15]]]]}, "2012-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.53, 64.47], [-66.75, 65.0], [-66.53, 65.53], [-66.0, 65.75], [-65.75, 65.65], [-65.5, 65.75], [-64.97, 65.53], [-64.82, 65.18], [-64.75, 65.15], [-64.68, 65.18], [-64.53, 65.53], [-64.18, 65.68], [-64.03, 66.03], [-63.5, 66.25], [-63.75, 66.35], [-64.0, 66.25], [-64.53, 66.47], [-64.75, 67.0], [-64.53, 67.53], [-64.0, 67.75], [-63.75, 67.65], [-63.5, 67.75], [-62.97, 67.53], [-62.75, 67.0], [-62.93, 66.57], [-62.5, 66.75], [-62.25, 66.65], [-62.0, 66.75], [-61.75, 66.65], [-61.5, 66.75], [-60.97, 66.53], [-60.75, 66.0], [-60.85, 65.75], [-60.75, 65.5], [-60.97, 64.97], [-61.32, 64.82], [-61.47, 64.47], [-62.0, 64.25], [-62.25, 64.35], [-62.5, 64.25], [-62.75, 64.35], [-62.82, 64.32], [-62.97, 63.97], [-63.32, 63.82], [-63.47, 63.47], [-64.0, 63.25], [-64.25, 63.35], [-64.5, 63.25], [-64.75, 63.35], [-65.0, 63.25], [-65.53, 63.47], [-65.75, 64.0], [-65.65, 64.25], [-65.68, 64.32], [-65.75, 64.35], [-66.0, 64.25], [-66.53, 64.47]], [[-63.25, 66.15], [-63.18, 66.18], [-63.07, 66.43], [-63.5, 66.25], [-63.25, 66.15]]]]}, "2012-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.53, 64.47], [-66.75, 65.0], [-66.53, 65.53], [-66.0, 65.75], [-65.75, 65.65], [-65.5, 65.75], [-64.97, 65.53], [-64.82, 65.18], [-64.75, 65.15], [-64.5, 65.25], [-64.25, 65.15], [-64.0, 65.25], [-63.75, 65.15], [-63.68, 65.18], [-63.65, 65.25], [-63.75, 65.5], [-63.53, 66.03], [-63.18, 66.18], [-63.07, 66.43], [-63.5, 66.25], [-63.75, 66.35], [-64.0, 66.25], [-64.53, 66.47], [-64.75, 67.0], [-64.53, 67.53], [-64.0, 67.75], [-63.75, 67.65], [-63.5, 67.75], [-62.97, 67.53], [-62.75, 67.0], [-62.93, 66.57], [-62.5, 66.75], [-62.25, 66.65], [-62.0, 66.75], [-61.75, 66.65], [-61.5, 66.75], [-60.97, 66.53], [-60.75, 66.0], [-60.85, 65.75], [-60.75, 65.5], [-60.97, 64.97], [-61.5, 64.75], [-61.75, 64.85], [-62.0, 64.75], [-62.25, 64.85], [-62.32, 64.82], [-62.47, 64.47], [-62.82, 64.32], [-62.97, 63.97], [-63.32, 63.82], [-63.47, 63.47], [-64.0, 63.25], [-64.25, 63.35], [-64.5, 63.25], [-64.75, 63.35], [-65.0, 63.25], [-65.53, 63.47], [-65.75, 64.0], [-65.65, 64.25], [-65.68, 64.32], [-65.75, 64.35], [-66.0, 64.25], [-66.53, 64.47]]]]}, "2012-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.53, 64.47], [-66.75, 65.0], [-66.53, 65.53], [-66.0, 65.75], [-65.75, 65.65], [-65.5, 65.75], [-64.97, 65.53], [-64.82, 65.18], [-64.75, 65.15], [-64.5, 65.25], [-64.25, 65.15], [-64.0, 65.25], [-63.75, 65.15], [-63.68, 65.18], [-63.53, 65.53], [-63.0, 65.75], [-62.47, 65.53], [-62.25, 65.0], [-62.47, 64.47], [-62.82, 64.32], [-62.97, 63.97], [-63.32, 63.82], [-63.47, 63.47], [-64.0, 63.25], [-64.25, 63.35], [-64.5, 63.25], [-64.75, 63.35], [-65.0, 63.25], [-65.53, 63.47], [-65.75, 64.0], [-65.65, 64.25], [-65.68, 64.32], [-65.75, 64.35], [-66.0, 64.25], [-66.53, 64.47]]]]}, "2012-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.53, 63.47], [-65.75, 64.0], [-65.53, 64.53], [-65.0, 64.75], [-64.75, 64.65], [-64.5, 64.75], [-63.97, 64.53], [-63.75, 64.0], [-63.97, 63.47], [-64.5, 63.25], [-64.75, 63.35], [-65.0, 63.25], [-65.53, 63.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.511662822116818}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.724955746044615}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-9.656438722843461, -8.637059344581473, -9.043580174204749, -8.575690413752568, -7.226323476141943, -8.754884375101653, -7.571992049756261, -7.664846657337989]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-7.826250681436818, -7.13712435819815, -7.50533438223232, -6.946890079443051, -5.686455560261322, -7.565794680054637, -7.038980420431415, -7.65236111398292]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.879365897772873, 8.76670312322268, 8.009806933898835, 6.877378933748374, 7.755778204095798, 5.977535858690282, 6.147017205756072, 6.309755046835136]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.631037580786654, 12.511662822116818, 10.860344659802195, 8.915169922379675, 10.40505689837488, 7.534519538209679, 7.372708004073161, 6.905141325053023]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6316565006534263, 1.6687445541964423, 1.505114375498325, 1.4659815068738564, 1.706871777988292, 1.3398662017938252, 1.4500976470068632, 1.43940721638322]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9601286103540887, 2.3682911461564835, 1.791060074010212, 1.6654963020640174, 2.008588211536029, 1.4546018204821183, 1.6094179070670018, 1.5159517010784511]}}