{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:26:51.948855", "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": "2021-Aug-04_to_2021-Aug-06_260.0_61.5"}, "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": 2021080000331}, "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": "August 04 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 06 2021"}, "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": 65221.88787965628}, "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": []}, "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": 61.5}, "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": 260.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "260.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 258.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 263.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-102.03, 62.53], [-101.5, 62.75], [-101.25, 62.646], [-101.177, 62.677], [-101.03, 63.03], [-100.5, 63.25], [-100.25, 63.146], 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"description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-04T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-102.14644660940672, 61.75], [-102.25, 62.0], [-102.03033008588989, 62.53033008588991], [-101.5, 62.75], [-101.25, 62.64644660940672], [-101.17677669529661, 62.67677669529664], [-101.03033008588989, 63.03033008588991], [-100.5, 63.25], [-100.25, 63.14644660940672], [-100.0, 63.25], [-99.46966991411011, 63.03033008588991], [-99.32322330470339, 62.67677669529664], [-99.25, 62.64644660940672], [-99.17677669529661, 62.67677669529664], [-99.03033008588989, 63.03033008588991], [-98.67677669529661, 63.17677669529664], [-98.53033008588989, 63.53033008588991], [-98.0, 63.75], [-97.46966991411011, 63.53033008588991], [-97.32322330470339, 63.17677669529664], [-96.96966991411011, 63.03033008588991], [-96.75, 62.5], [-96.85355339059328, 62.25], [-96.82322330470339, 62.17677669529664], [-96.46966991411011, 62.03033008588991], 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8.137833533628282]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.883074621698571, -4.981374109597652, -4.90445267471106]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.820218980136815, -5.65141750886454, -5.6250141683185575]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.823200910679939, -1.5152081100125372, -1.4656929449362237]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.154604041933078, -1.7414133925246202, -1.693129205415782]}}