{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:13.536215", "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-06_to_2012-Apr-08_267.5_61.5"}, "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": 2012040001887}, "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 06 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 08 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 81582.44864000774}, "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"]}, "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": 61.5}, "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": 267.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "267.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 265.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 270.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 64.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.25, 62.5], [-95.03, 63.03], [-94.5, 63.25], [-94.25, 63.15], [-94.0, 63.25], [-93.75, 63.15], [-93.68, 63.18], [-93.53, 63.53], [-93.0, 63.75], [-92.75, 63.65], [-92.68, 63.68], [-92.53, 64.03], [-92.18, 64.18], [-92.03, 64.53], [-91.5, 64.75], [-91.25, 64.65], [-91.0, 64.75], [-90.47, 64.53], [-90.32, 64.18], [-89.97, 64.03], [-89.82, 63.68], [-89.75, 63.65], [-89.5, 63.75], [-88.97, 63.53], [-88.75, 63.0], [-88.97, 62.47], [-89.32, 62.32], [-89.47, 61.97], [-89.82, 61.82], [-89.85, 61.75], [-89.75, 61.5], [-89.97, 60.97], [-90.5, 60.75], [-90.75, 60.85], [-90.82, 60.82], [-90.97, 60.47], [-91.32, 60.32], [-91.47, 59.97], [-91.82, 59.82], [-91.97, 59.47], [-92.5, 59.25], [-92.75, 59.35], [-92.82, 59.32], [-92.97, 58.97], [-93.5, 58.75], [-93.75, 58.85], [-94.0, 58.75], [-94.53, 58.97], [-94.75, 59.5], [-94.65, 59.75], [-94.75, 60.0], [-94.65, 60.25], [-94.75, 60.5], [-94.65, 60.75], [-94.75, 61.0], [-94.54, 61.5], [-94.68, 61.82], [-95.03, 61.97], [-95.25, 62.5]]]]}, "2012-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.25, 62.5], [-95.03, 63.03], [-94.5, 63.25], [-94.25, 63.15], [-94.0, 63.25], [-93.75, 63.15], [-93.68, 63.18], [-93.53, 63.53], [-93.0, 63.75], [-92.75, 63.65], [-92.68, 63.68], [-92.53, 64.03], [-92.18, 64.18], [-92.03, 64.53], [-91.5, 64.75], [-91.25, 64.65], [-91.0, 64.75], [-90.47, 64.53], [-90.32, 64.18], [-89.97, 64.03], [-89.82, 63.68], [-89.75, 63.65], [-89.5, 63.75], [-88.97, 63.53], [-88.75, 63.0], [-88.97, 62.47], [-89.32, 62.32], [-89.47, 61.97], [-89.82, 61.82], [-89.85, 61.75], [-89.75, 61.5], [-89.97, 60.97], [-90.5, 60.75], [-90.75, 60.85], [-90.82, 60.82], [-90.97, 60.47], [-91.32, 60.32], [-91.47, 59.97], [-91.82, 59.82], [-91.97, 59.47], [-92.5, 59.25], [-92.75, 59.35], [-92.82, 59.32], [-92.97, 58.97], [-93.5, 58.75], [-93.75, 58.85], [-94.0, 58.75], [-94.53, 58.97], [-94.75, 59.5], [-94.65, 59.75], [-94.75, 60.0], [-94.65, 60.25], [-94.75, 60.5], [-94.65, 60.75], [-94.75, 61.0], [-94.54, 61.5], [-94.68, 61.82], [-95.03, 61.97], [-95.25, 62.5]]]]}, "2012-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.25, 62.5], [-95.03, 63.03], [-94.5, 63.25], [-94.25, 63.15], [-94.0, 63.25], [-93.75, 63.15], [-93.68, 63.18], [-93.53, 63.53], [-93.0, 63.75], [-92.75, 63.65], [-92.68, 63.68], [-92.53, 64.03], [-92.18, 64.18], [-92.03, 64.53], [-91.5, 64.75], [-91.25, 64.65], [-91.0, 64.75], [-90.47, 64.53], [-90.32, 64.18], [-89.97, 64.03], [-89.82, 63.68], [-89.75, 63.65], [-89.5, 63.75], [-88.97, 63.53], [-88.75, 63.0], [-88.97, 62.47], [-89.32, 62.32], [-89.47, 61.97], [-89.82, 61.82], [-89.85, 61.75], [-89.75, 61.5], [-89.97, 60.97], [-90.5, 60.75], [-90.75, 60.85], [-90.82, 60.82], [-90.97, 60.47], [-91.32, 60.32], [-91.47, 59.97], [-91.82, 59.82], [-91.97, 59.47], [-92.5, 59.25], [-92.75, 59.35], [-92.82, 59.32], [-92.97, 58.97], [-93.5, 58.75], [-93.75, 58.85], [-94.0, 58.75], [-94.53, 58.97], [-94.75, 59.5], [-94.65, 59.75], [-94.75, 60.0], [-94.65, 60.25], [-94.75, 60.5], [-94.65, 60.75], [-94.75, 61.0], [-94.54, 61.5], [-94.68, 61.82], [-95.03, 61.97], [-95.25, 62.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.952947343504718}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.05615206172698}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-7.720996469954343, -5.089731716594827, -6.9715044363429115]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-5.114314994761287, -2.2030646341635247, -4.038363837395366]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.21070880871754, 9.526605516286436, 7.431141860176956]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.9593970968277, 12.952947343504718, 8.351514617704652]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5152423656820098, 2.002286941663295, 1.5729219016359495]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7131024561816866, 2.2323542326093295, 1.822763340378772]}}