{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:43.693238", "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": "2022-Aug-27_to_2022-Aug-29_268.5_56.0"}, "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": 2022080002898}, "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": "August 27 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 29 2022"}, "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": 53602.7244556406}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 56.0}, "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": 268.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "268.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 267.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 270.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 53.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-92.25, 56.65], [-92.0, 56.75], [-91.75, 56.65], [-91.5, 56.75], [-90.97, 56.53], [-90.82, 56.18], [-90.75, 56.15], [-90.5, 56.25], [-89.97, 56.03], [-89.82, 55.68], [-89.47, 55.53], [-89.25, 55.0], [-89.35, 54.75], [-89.25, 54.5], [-89.35, 54.25], [-89.25, 54.0], [-89.47, 53.47], [-90.0, 53.25], [-90.25, 53.35], [-90.32, 53.32], [-90.47, 52.97], [-90.82, 52.82], [-90.97, 52.47], [-91.5, 52.25], [-92.03, 52.47], [-92.18, 52.82], [-92.53, 52.97], [-92.68, 53.32], [-93.03, 53.47], [-93.25, 54.0], [-93.15, 54.25], [-93.25, 54.5], [-93.12, 54.8], [-93.53, 54.97], [-93.75, 55.5], [-93.53, 56.03], [-93.18, 56.18], [-93.03, 56.53], [-92.5, 56.75], [-92.25, 56.65]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.02999999999997, 56.53], [-92.5, 56.75], [-92.25, 56.65], [-92.0, 56.75], [-91.75, 56.65], [-91.5, 56.75], [-90.97000000000003, 56.53], [-90.82, 56.18], [-90.75, 56.15], [-90.5, 56.25], [-89.97000000000003, 56.03], [-89.82, 55.68], [-89.47000000000003, 55.53], [-89.25, 55.0], [-89.35000000000002, 54.75], [-89.25, 54.5], [-89.35000000000002, 54.25], [-89.25, 54.0], [-89.47000000000003, 53.47], [-90.0, 53.25], [-90.25, 53.35], [-90.32, 53.32], [-90.47000000000003, 52.97], [-90.82, 52.82], [-90.97000000000003, 52.47], [-91.5, 52.25], [-92.02999999999997, 52.47], [-92.18, 52.82], [-92.52999999999997, 52.97], [-92.68, 53.32], [-93.02999999999997, 53.47], [-93.25, 54.0], [-93.14999999999998, 54.25], [-93.25, 54.5], [-93.12, 54.8], [-93.52999999999997, 54.97], [-93.75, 55.5], [-93.52999999999997, 56.03], [-93.18, 56.18], [-93.02999999999997, 56.53]]]]}, "2022-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.02999999999997, 56.53], [-92.5, 56.75], [-92.25, 56.65], [-92.0, 56.75], [-91.75, 56.65], [-91.5, 56.75], [-90.97000000000003, 56.53], [-90.82, 56.18], [-90.75, 56.15], [-90.5, 56.25], [-89.97000000000003, 56.03], [-89.82, 55.68], [-89.47000000000003, 55.53], [-89.25, 55.0], [-89.35000000000002, 54.75], [-89.25, 54.5], [-89.35000000000002, 54.25], [-89.25, 54.0], [-89.47000000000003, 53.47], [-90.0, 53.25], [-90.25, 53.35], [-90.32, 53.32], [-90.47000000000003, 52.97], [-90.82, 52.82], [-90.97000000000003, 52.47], [-91.5, 52.25], [-92.02999999999997, 52.47], [-92.18, 52.82], [-92.52999999999997, 52.97], [-92.68, 53.32], [-93.02999999999997, 53.47], [-93.25, 54.0], [-93.14999999999998, 54.25], [-93.25, 54.5], [-93.12, 54.8], [-93.52999999999997, 54.97], [-93.75, 55.5], [-93.52999999999997, 56.03], [-93.18, 56.18], [-93.02999999999997, 56.53]]]]}, "2022-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.02999999999997, 56.53], [-92.5, 56.75], [-92.25, 56.65], [-92.0, 56.75], [-91.75, 56.65], [-91.5, 56.75], [-90.97000000000003, 56.53], [-90.82, 56.18], [-90.75, 56.15], [-90.5, 56.25], [-89.97000000000003, 56.03], [-89.82, 55.68], [-89.47000000000003, 55.53], [-89.25, 55.0], [-89.35000000000002, 54.75], [-89.25, 54.5], [-89.35000000000002, 54.25], [-89.25, 54.0], [-89.47000000000003, 53.47], [-90.0, 53.25], [-90.25, 53.35], [-90.32, 53.32], [-90.47000000000003, 52.97], [-90.82, 52.82], [-90.97000000000003, 52.47], [-91.5, 52.25], [-92.02999999999997, 52.47], [-92.18, 52.82], [-92.52999999999997, 52.97], [-92.68, 53.32], [-93.02999999999997, 53.47], [-93.25, 54.0], [-93.14999999999998, 54.25], [-93.25, 54.5], [-93.12, 54.8], [-93.52999999999997, 54.97], [-93.75, 55.5], [-93.52999999999997, 56.03], [-93.18, 56.18], [-93.02999999999997, 56.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.079130474264161}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.5078206453180885}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.892258631795414, 19.911147566372733, 18.679164949196263]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.69789339653795, 20.765846811737845, 19.73786357491781]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.817630749489704, 5.8726997171045445, 4.833131469360016]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.7966700820736605, 7.079130474264161, 5.280856333139013]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.739433966089022, 1.7438138408817223, 1.4472139910944155]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.997258420054364, 1.990899474231264, 1.5872406057216863]}}