{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:37.524672", "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": "2013-Feb-16_to_2013-Feb-19_268.0_63.5"}, "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": 2013020000639}, "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": "February 16 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 19 2013"}, "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": 61213.70635155438}, "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": ["Hudson Bay"]}, "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": 63.5}, "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": 268.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "268.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 262.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 270.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 61.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 64.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.0, 64.75], [-95.75, 64.65], [-95.5, 64.75], [-95.25, 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61.75], [-96.53, 61.97], [-96.68, 62.32], [-96.75, 62.35], [-97.0, 62.25], [-97.53, 62.47], [-97.75, 63.0], [-97.65, 63.25], [-97.75, 63.5], [-97.53, 64.03]]]]}, "2013-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-97.53, 64.03], [-97.0, 64.25], [-96.75, 64.15], [-96.68, 64.18], [-96.53, 64.53], [-96.0, 64.75], [-95.75, 64.65], [-95.5, 64.75], [-95.25, 64.65], [-95.0, 64.75], [-94.75, 64.65], [-94.5, 64.75], [-93.97, 64.53], [-93.82, 64.18], [-93.75, 64.15], [-93.5, 64.25], [-93.25, 64.15], [-93.18, 64.18], [-93.03, 64.53], [-92.5, 64.75], [-92.25, 64.65], [-92.0, 64.75], [-91.75, 64.65], [-91.5, 64.75], [-91.25, 64.65], [-91.0, 64.75], [-90.75, 64.65], [-90.5, 64.75], [-90.25, 64.65], [-90.0, 64.75], [-89.47, 64.53], [-89.25, 64.0], [-89.47, 63.47], [-90.0, 63.25], [-90.25, 63.35], [-90.32, 63.32], [-90.47, 62.97], [-90.82, 62.82], [-90.97, 62.47], [-91.5, 62.25], [-91.75, 62.35], [-92.0, 62.25], [-92.25, 62.35], [-92.32, 62.32], [-92.47, 61.97], [-93.0, 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"description": "The daily evolution of maximum t2m.", "value": [-42.659385637385896, -44.38437014467672, -43.59170620970917, -39.45030584914278]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.521699095978947, -8.653116976999472, -7.785440478108613, -7.564343004508403]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.20378561576922, -11.995827171323782, -11.083148760377412, -8.429560679739723]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.310438404682413, -1.3743919012135624, -1.244073800785585, -1.1734908575991891]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5303444623630673, -1.8628904846948582, -1.7058080917317426, -1.2966266909792965]}}