{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:49.266759", "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-Jun-06_to_2022-Jun-09_306.5_52.5"}, "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": 2022060000364}, "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": "June 06 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 09 2022"}, "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": "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": 95859.58386529608}, "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": ["Atlantic Ocean", "Labrador Sea"]}, "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": 52.5}, "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": 306.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 306.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 310.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-53.75, 53.65], [-53.5, 53.75], [-53.25, 53.65], [-53.0, 53.75], [-52.75, 53.65], [-52.5, 53.75], [-51.97, 53.53], [-51.75, 53.0], [-51.85, 52.75], [-51.8, 52.62], [-51.5, 52.75], [-50.97, 52.53], [-50.75, 52.0], [-50.85, 51.75], [-50.82, 51.68], [-50.47, 51.53], [-50.32, 51.18], [-50.25, 51.15], [-50.0, 51.25], [-49.47, 51.03], [-49.25, 50.5], [-49.47, 49.97], [-49.82, 49.82], [-49.85, 49.75], [-49.75, 49.5], [-49.85, 49.25], [-49.82, 49.18], [-49.47, 49.03], [-49.25, 48.5], [-49.47, 47.97], [-50.0, 47.75], [-50.53, 47.97], [-50.68, 48.32], [-50.75, 48.35], [-50.82, 48.32], [-50.97, 47.97], [-51.5, 47.75], [-52.03, 47.97], [-52.18, 48.32], [-52.25, 48.35], [-52.5, 48.25], [-53.03, 48.47], [-53.18, 48.82], [-53.53, 48.97], [-53.75, 49.5], [-53.65, 49.75], [-53.68, 49.82], [-54.03, 49.97], [-54.25, 50.5], [-54.04, 51.0], [-54.25, 51.5], [-54.15, 51.75], [-54.18, 51.82], [-54.53, 51.97], [-54.75, 52.5], [-54.65, 52.75], [-54.75, 53.0], [-54.53, 53.53], [-54.0, 53.75], [-53.75, 53.65]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America", "E.North-America", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.75, 53.0], [-54.52999999999997, 53.53], [-54.0, 53.75], [-53.47000000000003, 53.53], [-53.31999999999999, 53.18], [-53.25, 53.15], [-53.0, 53.25], [-52.47000000000003, 53.03], [-52.31999999999999, 52.68], [-51.97000000000003, 52.53], [-51.75, 52.0], [-51.85000000000002, 51.75], [-51.81999999999999, 51.68], [-51.75, 51.65], [-51.5, 51.75], [-50.97000000000003, 51.53], [-50.81999999999999, 51.18], [-50.75, 51.15], [-50.5, 51.25], [-50.25, 51.15], [-50.0, 51.25], [-49.47000000000003, 51.03], [-49.25, 50.5], [-49.47000000000003, 49.97], [-49.81999999999999, 49.82], [-49.85000000000002, 49.75], [-49.75, 49.5], [-49.97000000000003, 48.97], [-50.5, 48.75], [-51.02999999999997, 48.97], [-51.18000000000001, 49.32], [-51.25, 49.35], [-51.5, 49.25], [-51.75, 49.35], [-52.0, 49.25], [-52.52999999999997, 49.47], [-52.68000000000001, 49.82], [-53.02999999999997, 49.97], [-53.25, 50.5], [-53.14999999999998, 50.75], [-53.25, 51.0], [-53.14999999999998, 51.25], [-53.18000000000001, 51.32], [-53.52999999999997, 51.47], [-53.68000000000001, 51.82], [-53.75, 51.85], [-54.0, 51.75], [-54.52999999999997, 51.97], [-54.75, 52.5], [-54.64999999999998, 52.75], [-54.75, 53.0]]]]}, "2022-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.75, 53.0], [-54.52999999999997, 53.53], [-54.0, 53.75], [-53.75, 53.65], [-53.5, 53.75], [-53.25, 53.65], [-53.0, 53.75], [-52.75, 53.65], [-52.5, 53.75], [-51.97000000000003, 53.53], [-51.75, 53.0], [-51.85000000000002, 52.75], [-51.80000000000001, 52.62], [-51.5, 52.75], [-50.97000000000003, 52.53], [-50.75, 52.0], [-50.85000000000002, 51.75], [-50.81999999999999, 51.68], [-50.47000000000003, 51.53], [-50.31999999999999, 51.18], [-50.25, 51.15], [-50.0, 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anomaly recorded over entire duration", "value": -2.689927543206977}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.903236916595533}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.0045049629573555, 1.9885231241487986, 1.8860579526420906, 2.156579905579349]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.4246629614932544, 1.2602028186097982, 1.1207861794576388, 1.325815238042935]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.652074278302553, -1.8608357241528535, -2.059005893016426, -1.8967111954146045]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.84767461719008, -2.4615696418245534, -2.689927543206977, -2.359490662708083]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.31795235487583, -1.4336066045736782, -1.5385322096475238, -1.3985764413277721]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.417634961509331, -1.6274911310939424, -1.730281398306071, -1.67717988083953]}}