{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:52.594713", "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-May-02_to_2022-May-04_264.5_55.0"}, "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": 2022050000167}, "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 02 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 04 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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 62138.5315148765}, "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": []}, "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": 55.0}, "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": 264.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "264.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 262.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 266.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 53.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.03, 55.53], [-97.68, 55.68], [-97.53, 56.03], [-97.0, 56.25], [-96.75, 56.15], [-96.5, 56.25], [-96.25, 56.15], [-96.0, 56.25], [-95.75, 56.15], [-95.68, 56.18], [-95.53, 56.53], [-95.0, 56.75], [-94.75, 56.65], [-94.5, 56.75], [-94.25, 56.65], [-94.0, 56.75], [-93.75, 56.65], [-93.5, 56.75], [-92.97, 56.53], [-92.75, 56.0], [-92.85, 55.75], [-92.75, 55.5], [-92.85, 55.25], [-92.75, 55.0], [-92.97, 54.47], [-93.32, 54.32], [-93.47, 53.97], [-93.82, 53.82], [-93.97, 53.47], [-94.5, 53.25], [-94.75, 53.35], [-95.0, 53.25], [-95.25, 53.35], [-95.5, 53.25], [-95.75, 53.35], [-96.0, 53.25], [-96.25, 53.35], [-96.5, 53.25], [-96.75, 53.35], [-97.0, 53.25], [-97.53, 53.47], [-97.68, 53.82], [-98.03, 53.97], [-98.25, 54.5], [-98.15, 54.75], [-98.25, 55.0], [-98.03, 55.53]]]]}, "2022-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.03, 55.53], [-97.68, 55.68], [-97.53, 56.03], [-97.0, 56.25], [-96.75, 56.15], [-96.5, 56.25], [-96.25, 56.15], [-96.0, 56.25], [-95.75, 56.15], [-95.68, 56.18], [-95.53, 56.53], [-95.0, 56.75], [-94.75, 56.65], [-94.5, 56.75], [-94.25, 56.65], [-94.0, 56.75], [-93.75, 56.65], [-93.5, 56.75], [-92.97, 56.53], [-92.75, 56.0], [-92.85, 55.75], [-92.75, 55.5], [-92.85, 55.25], [-92.75, 55.0], [-92.97, 54.47], [-93.32, 54.32], [-93.47, 53.97], [-93.82, 53.82], [-93.97, 53.47], [-94.5, 53.25], [-94.75, 53.35], [-95.0, 53.25], [-95.25, 53.35], [-95.5, 53.25], [-95.75, 53.35], [-96.0, 53.25], [-96.25, 53.35], [-96.5, 53.25], [-96.75, 53.35], [-97.0, 53.25], [-97.53, 53.47], [-97.68, 53.82], [-98.03, 53.97], [-98.25, 54.5], [-98.15, 54.75], [-98.25, 55.0], [-98.03, 55.53]]]]}, "2022-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.03, 55.53], [-97.68, 55.68], [-97.53, 56.03], [-97.0, 56.25], [-96.75, 56.15], [-96.5, 56.25], [-96.25, 56.15], [-96.0, 56.25], [-95.75, 56.15], [-95.68, 56.18], [-95.53, 56.53], [-95.0, 56.75], [-94.75, 56.65], [-94.5, 56.75], [-94.25, 56.65], [-94.0, 56.75], [-93.75, 56.65], [-93.5, 56.75], [-92.97, 56.53], [-92.75, 56.0], [-92.85, 55.75], [-92.75, 55.5], [-92.85, 55.25], [-92.75, 55.0], [-92.97, 54.47], [-93.32, 54.32], [-93.47, 53.97], [-93.82, 53.82], [-93.97, 53.47], [-94.5, 53.25], [-94.75, 53.35], [-95.0, 53.25], [-95.25, 53.35], [-95.5, 53.25], [-95.75, 53.35], [-96.0, 53.25], [-96.25, 53.35], [-96.5, 53.25], [-96.75, 53.35], [-97.0, 53.25], [-97.53, 53.47], [-97.68, 53.82], [-98.03, 53.97], [-98.25, 54.5], [-98.15, 54.75], [-98.25, 55.0], [-98.03, 55.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.05381953324951}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.98508582885701}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-4.196471152849938, -4.201456219207785, -3.927204124717889]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-5.954517232032686, -7.144851009736158, -6.578281693084534]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.835062783365229, -7.083027338699896, -7.037167364505907]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.910724620552685, -9.05381953324951, -8.668867403489912]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4011614942205848, -1.445891763911005, -1.4298351273243846]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5299604037399546, -1.6075396133723194, -1.6133101242902177]}}