{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:07.678374", "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": "2015-Jun-02_to_2015-Jun-04_315.0_67.5"}, "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": 2015060000140}, "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 02 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 04 2015"}, "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": 56450.961838605646}, "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": ["Greenland"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Greenland/Iceland"]}, "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": 67.5}, "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": 315.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "315.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 311.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 317.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 63.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 69.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.53, 68.47], [-48.75, 69.0], [-48.53, 69.53], [-48.0, 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67.32], [-46.25, 67.35], [-46.5, 67.25], [-47.03, 67.47], [-47.18, 67.82], [-47.53, 67.97], [-47.68, 68.32], [-47.75, 68.35], [-48.0, 68.25], [-48.53, 68.47]]]]}, "2015-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.53, 68.47], [-48.75, 69.0], [-48.53, 69.53], [-48.0, 69.75], [-47.75, 69.65], [-47.5, 69.75], [-47.25, 69.65], [-47.0, 69.75], [-46.75, 69.65], [-46.5, 69.75], [-46.25, 69.65], [-46.0, 69.75], [-45.47, 69.53], [-45.32, 69.18], [-45.25, 69.15], [-45.0, 69.25], [-44.75, 69.15], [-44.5, 69.25], [-44.25, 69.15], [-44.0, 69.25], [-43.47, 69.03], [-43.32, 68.68], [-42.97, 68.53], [-42.75, 68.0], [-42.85, 67.75], [-42.82, 67.68], [-42.47, 67.53], [-42.32, 67.18], [-41.97, 67.03], [-41.75, 66.5], [-41.85, 66.25], [-41.75, 66.0], [-41.97, 65.47], [-42.32, 65.32], [-42.35, 65.25], [-42.25, 65.0], [-42.35, 64.75], [-42.25, 64.5], [-42.35, 64.25], [-42.25, 64.0], [-42.35, 63.75], [-42.25, 63.5], [-42.47, 62.97], [-43.0, 62.75], [-43.53, 62.97], [-43.75, 63.5], [-43.65, 63.75], [-43.75, 64.0], [-43.65, 64.25], [-43.68, 64.32], [-44.03, 64.47], [-44.25, 65.0], [-44.15, 65.25], [-44.18, 65.32], [-44.25, 65.35], [-44.5, 65.25], [-45.03, 65.47], [-45.18, 65.82], [-45.53, 65.97], [-45.75, 66.5], [-45.65, 66.75], [-45.68, 66.82], [-46.03, 66.97], [-46.18, 67.32], [-46.25, 67.35], [-46.5, 67.25], [-47.03, 67.47], [-47.18, 67.82], [-47.53, 67.97], [-47.68, 68.32], [-47.75, 68.35], [-48.0, 68.25], [-48.53, 68.47]]]]}, "2015-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.53, 68.47], [-48.75, 69.0], [-48.53, 69.53], [-48.0, 69.75], [-47.75, 69.65], [-47.5, 69.75], [-47.25, 69.65], [-47.0, 69.75], [-46.75, 69.65], [-46.5, 69.75], [-46.25, 69.65], [-46.0, 69.75], [-45.47, 69.53], [-45.32, 69.18], [-45.25, 69.15], [-45.0, 69.25], [-44.75, 69.15], [-44.5, 69.25], [-44.25, 69.15], [-44.0, 69.25], [-43.47, 69.03], [-43.32, 68.68], [-42.97, 68.53], [-42.75, 68.0], [-42.85, 67.75], [-42.82, 67.68], [-42.47, 67.53], [-42.32, 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entire duration", "value": -5.936546064535742}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-15.522944147726037, -16.151325525296897, -15.553257221954425]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-17.631908010661135, -18.64443593494596, -17.802124319192473]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.302450668803716, -6.373152050060591, -6.134035474742923]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.409627722188645, -8.136424900388079, -7.228414815096301]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.446146194949185, -1.7378512679227964, -1.6899946896206102]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.707862765990583, -2.1390576923899247, -1.9168651949574196]}}