{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:28.341891", "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-May-10_to_2012-May-13_268.0_57.5"}, "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": 2012050002204}, "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 10 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 13 2012"}, "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": 63085.37652454056}, "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": 57.5}, "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": 268.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "268.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 266.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 272.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.03, 56.97], [-94.25, 57.5], [-94.03, 58.03], [-93.5, 58.25], [-93.25, 58.15], [-93.0, 58.25], [-92.75, 58.15], [-92.5, 58.25], [-92.25, 58.15], [-92.0, 58.25], [-91.75, 58.15], [-91.5, 58.25], [-90.97, 58.03], [-90.82, 57.68], [-90.47, 57.53], [-90.25, 57.0], [-90.47, 56.47], [-91.0, 56.25], [-91.25, 56.35], [-91.5, 56.25], [-91.75, 56.35], [-92.0, 56.25], [-92.25, 56.35], [-92.5, 56.25], [-93.03, 56.47], [-93.18, 56.82], [-93.25, 56.85], [-93.5, 56.75], [-94.03, 56.97]]]]}, "2012-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.03, 56.97], [-94.25, 57.5], [-94.03, 58.03], [-93.5, 58.25], [-93.25, 58.15], [-93.0, 58.25], [-92.75, 58.15], [-92.62, 58.2], [-92.75, 58.5], [-92.53, 59.03], [-92.0, 59.25], [-91.75, 59.15], [-91.5, 59.25], [-91.25, 59.15], [-91.0, 59.25], [-90.75, 59.15], [-90.5, 59.25], [-90.25, 59.15], [-90.0, 59.25], [-89.75, 59.15], [-89.5, 59.25], [-88.97, 59.03], [-88.82, 58.68], [-88.75, 58.65], [-88.5, 58.75], [-87.97, 58.53], [-87.75, 58.0], [-87.85, 57.75], [-87.82, 57.68], [-87.47, 57.53], [-87.25, 57.0], [-87.35, 56.75], [-87.25, 56.5], [-87.47, 55.97], [-88.0, 55.75], [-88.25, 55.85], [-88.5, 55.75], [-88.75, 55.85], [-89.0, 55.75], [-89.5, 55.96], [-90.0, 55.75], [-90.53, 55.97], [-90.68, 56.32], [-90.75, 56.35], [-91.0, 56.25], [-91.25, 56.35], [-91.5, 56.25], [-91.75, 56.35], [-92.0, 56.25], [-92.25, 56.35], [-92.5, 56.25], [-93.03, 56.47], [-93.18, 56.82], [-93.25, 56.85], [-93.5, 56.75], [-94.03, 56.97]]]]}, "2012-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.03, 56.97], [-94.25, 57.5], [-94.03, 58.03], [-93.5, 58.25], [-93.25, 58.15], [-93.0, 58.25], [-92.75, 58.15], [-92.62, 58.2], [-92.75, 58.5], [-92.53, 59.03], [-92.0, 59.25], [-91.75, 59.15], [-91.5, 59.25], [-91.25, 59.15], [-91.0, 59.25], [-90.75, 59.15], [-90.5, 59.25], [-90.25, 59.15], [-90.0, 59.25], [-89.75, 59.15], [-89.5, 59.25], [-88.97, 59.03], [-88.82, 58.68], [-88.75, 58.65], [-88.5, 58.75], [-87.97, 58.53], [-87.75, 58.0], [-87.85, 57.75], [-87.82, 57.68], [-87.47, 57.53], [-87.25, 57.0], [-87.35, 56.75], [-87.25, 56.5], [-87.47, 55.97], [-88.0, 55.75], [-88.25, 55.85], [-88.5, 55.75], [-88.75, 55.85], [-89.0, 55.75], [-89.5, 55.96], [-90.0, 55.75], [-90.53, 55.97], [-90.68, 56.32], [-90.75, 56.35], [-91.0, 56.25], [-91.25, 56.35], [-91.5, 56.25], [-91.75, 56.35], [-92.0, 56.25], [-92.25, 56.35], [-92.5, 56.25], [-93.03, 56.47], [-93.18, 56.82], [-93.25, 56.85], [-93.5, 56.75], [-94.03, 56.97]]]]}, "2012-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.53, 59.03], [-92.0, 59.25], [-91.75, 59.15], [-91.5, 59.25], [-91.25, 59.15], [-91.0, 59.25], [-90.75, 59.15], [-90.5, 59.25], [-90.25, 59.15], [-90.0, 59.25], [-89.75, 59.15], [-89.5, 59.25], [-88.97, 59.03], [-88.82, 58.68], [-88.75, 58.65], [-88.5, 58.75], [-87.97, 58.53], [-87.75, 58.0], [-87.85, 57.75], [-87.82, 57.68], [-87.47, 57.53], [-87.25, 57.0], [-87.35, 56.75], [-87.25, 56.5], [-87.47, 55.97], [-88.0, 55.75], [-88.25, 55.85], [-88.5, 55.75], [-88.75, 55.85], [-89.0, 55.75], [-89.5, 55.96], [-90.0, 55.75], [-90.53, 55.97], [-90.68, 56.32], [-91.03, 56.47], [-91.18, 56.82], [-91.25, 56.85], [-91.5, 56.75], [-91.75, 56.85], [-92.0, 56.75], [-92.53, 56.97], [-92.75, 57.5], [-92.54, 58.0], [-92.75, 58.5], [-92.53, 59.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.411827625530975}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.964232912977762}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.734539054388904, 5.799734015724084, 4.068398180462566, 3.185215927999252]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.731278163017066, 11.944609408515191, 9.40913221475006, 8.93411678332086]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.157591996956613, 8.314095895508183, 6.265422345357135, 5.529386992900928]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [11.828208922492536, 12.411827625530975, 9.464739221616753, 8.8324452601031]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.798790888705557, 2.1006029625802234, 1.5594210083949438, 1.5155734967492696]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.046406875978877, 2.287292815186021, 1.7562416794378268, 1.774313433400904]}}