{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:38.593508", "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": "2010-May-06_to_2010-May-09_276.0_49.5"}, "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": 2010050000220}, "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 06 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 09 2010"}, "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": 178527.82084676536}, "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": ["E.North-America", "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": 49.5}, "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": 276.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "276.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 270.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 279.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.04, 50.5], [-90.25, 51.0], [-90.15, 51.25], [-90.25, 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49.68]]]]}, "2010-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.04, 50.5], [-90.25, 51.0], [-90.15, 51.25], [-90.25, 51.5], [-90.03, 52.03], [-89.5, 52.25], [-89.0, 52.04], [-88.5, 52.25], [-88.25, 52.15], [-88.0, 52.25], [-87.75, 52.15], [-87.68, 52.18], [-87.53, 52.53], [-87.0, 52.75], [-86.47, 52.53], [-86.32, 52.18], [-85.97, 52.03], [-85.82, 51.68], [-85.47, 51.53], [-85.32, 51.18], [-84.97, 51.03], [-84.82, 50.68], [-84.47, 50.53], [-84.32, 50.18], [-84.25, 50.15], [-84.0, 50.25], [-83.75, 50.15], [-83.68, 50.18], [-83.53, 50.53], [-83.0, 50.75], [-82.75, 50.65], [-82.68, 50.68], [-82.53, 51.03], [-82.0, 51.25], [-81.75, 51.15], [-81.5, 51.25], [-80.97, 51.03], [-80.75, 50.5], [-80.85, 50.25], [-80.75, 50.0], [-80.87, 49.7], [-80.47, 49.53], [-80.32, 49.18], [-79.97, 49.03], [-79.75, 48.5], [-79.97, 47.97], [-80.5, 47.75], [-80.75, 47.85], [-81.0, 47.75], [-81.25, 47.85], [-81.5, 47.75], [-81.75, 47.85], [-81.82, 47.82], [-81.97, 47.47], [-82.32, 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[0.4600502320487294, 0.9704996333646818, 0.10438960966683908, 0.7662482580042251]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.7937744278311811, -0.7856186071145999, -2.9075324878827473, -0.6477110931803054]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.956588524436688, -6.134653042634051, -7.1302669775811625, -7.145210922281361]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.264500530655312, -7.098864329322396, -9.89685365589935, -8.984725794325414]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3514068822520728, -1.3245715108449085, -1.4884386935404594, -1.4310799033616783]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5399994449456356, -1.5100007853104243, -1.8401878234377658, -1.7729131416569177]}}