{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:49.156458", "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": "2014-Jul-12_to_2014-Jul-14_261.5_57.0"}, "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": 2014070000619}, "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": "July 12 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 14 2014"}, "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": 95779.50982085538}, "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": 57.0}, "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": 261.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "261.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 256.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 263.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.53, 57.53], [-103.18, 57.68], [-103.03, 58.03], [-102.5, 58.25], [-102.25, 58.15], [-102.0, 58.25], [-101.75, 58.15], [-101.5, 58.25], [-101.25, 58.15], [-101.0, 58.25], [-100.75, 58.15], [-100.5, 58.25], [-100.25, 58.15], [-100.0, 58.25], [-99.75, 58.15], [-99.5, 58.25], [-99.25, 58.15], [-99.0, 58.25], [-98.75, 58.15], [-98.5, 58.25], [-97.97, 58.03], [-97.82, 57.68], [-97.47, 57.53], [-97.32, 57.18], [-96.97, 57.03], [-96.82, 56.68], [-96.75, 56.65], [-96.5, 56.75], [-95.97, 56.53], [-95.75, 56.0], [-95.97, 55.47], [-96.32, 55.32], [-96.47, 54.97], [-97.0, 54.75], [-97.25, 54.85], [-97.5, 54.75], [-97.75, 54.85], [-97.87, 54.8], [-97.75, 54.5], [-97.97, 53.97], [-98.5, 53.75], [-99.03, 53.97], [-99.18, 54.32], [-99.25, 54.35], [-99.5, 54.25], [-100.03, 54.47], [-100.18, 54.82], [-100.25, 54.85], [-100.5, 54.75], [-100.75, 54.85], [-101.0, 54.75], [-101.53, 54.97], [-101.68, 55.32], [-101.75, 55.35], [-102.0, 55.25], [-102.25, 55.35], [-102.5, 55.25], [-103.03, 55.47], [-103.18, 55.82], [-103.53, 55.97], [-103.75, 56.5], [-103.65, 56.75], [-103.75, 57.0], [-103.53, 57.53]]]]}, "2014-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.53, 57.53], [-103.18, 57.68], [-103.03, 58.03], [-102.5, 58.25], [-102.25, 58.15], [-102.0, 58.25], [-101.75, 58.15], [-101.5, 58.25], [-101.25, 58.15], [-101.0, 58.25], [-100.75, 58.15], [-100.5, 58.25], [-100.25, 58.15], [-100.0, 58.25], [-99.75, 58.15], [-99.5, 58.25], [-99.25, 58.15], [-99.0, 58.25], [-98.75, 58.15], [-98.5, 58.25], [-97.97, 58.03], [-97.82, 57.68], [-97.47, 57.53], [-97.32, 57.18], [-96.97, 57.03], [-96.82, 56.68], [-96.75, 56.65], [-96.5, 56.75], [-95.97, 56.53], [-95.75, 56.0], [-95.97, 55.47], [-96.32, 55.32], [-96.47, 54.97], [-97.0, 54.75], [-97.25, 54.85], [-97.5, 54.75], [-97.75, 54.85], [-97.87, 54.8], [-97.75, 54.5], [-97.97, 53.97], [-98.5, 53.75], [-99.03, 53.97], [-99.18, 54.32], [-99.25, 54.35], [-99.5, 54.25], [-100.03, 54.47], [-100.18, 54.82], [-100.25, 54.85], [-100.5, 54.75], [-100.75, 54.85], [-101.0, 54.75], [-101.53, 54.97], [-101.68, 55.32], [-101.75, 55.35], [-102.0, 55.25], [-102.25, 55.35], [-102.5, 55.25], [-103.03, 55.47], [-103.18, 55.82], [-103.53, 55.97], [-103.75, 56.5], [-103.65, 56.75], [-103.75, 57.0], [-103.53, 57.53]]]]}, "2014-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.53, 57.53], [-103.18, 57.68], [-103.03, 58.03], [-102.5, 58.25], [-102.25, 58.15], [-102.0, 58.25], [-101.75, 58.15], [-101.5, 58.25], [-101.25, 58.15], [-101.0, 58.25], [-100.75, 58.15], [-100.5, 58.25], [-100.25, 58.15], [-100.0, 58.25], [-99.75, 58.15], [-99.5, 58.25], [-99.25, 58.15], [-99.0, 58.25], [-98.75, 58.15], [-98.5, 58.25], [-97.97, 58.03], [-97.82, 57.68], [-97.47, 57.53], [-97.32, 57.18], [-96.97, 57.03], [-96.82, 56.68], [-96.75, 56.65], [-96.5, 56.75], [-95.97, 56.53], [-95.75, 56.0], [-95.97, 55.47], [-96.32, 55.32], [-96.47, 54.97], [-97.0, 54.75], [-97.25, 54.85], [-97.5, 54.75], [-97.75, 54.85], [-97.87, 54.8], [-97.75, 54.5], [-97.97, 53.97], [-98.5, 53.75], [-99.03, 53.97], [-99.18, 54.32], [-99.25, 54.35], [-99.5, 54.25], [-100.03, 54.47], [-100.18, 54.82], [-100.25, 54.85], [-100.5, 54.75], [-100.75, 54.85], [-101.0, 54.75], [-101.53, 54.97], [-101.68, 55.32], [-101.75, 55.35], [-102.0, 55.25], [-102.25, 55.35], [-102.5, 55.25], [-103.03, 55.47], [-103.18, 55.82], [-103.53, 55.97], [-103.75, 56.5], [-103.65, 56.75], [-103.75, 57.0], [-103.53, 57.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.848898688878364}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.367250613095204}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.992334444877201, 10.77968435742099, 12.75550166645553]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.167400906481191, 9.02331224126732, 11.92657391295711]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.158138757705354, -6.447184040952672, -4.496429040627581]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.450559705606963, -8.848898688878364, -5.268275954571834]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7129202680556816, -2.149166250777605, -1.5692638703227255]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.257358332874413, -2.880855487484307, -1.8032978768794883]}}