{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:33.276338", "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": "2012-Jan-27_to_2012-Jan-29_279.0_56.0"}, "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": 2012010002660}, "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": "January 27 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 29 2012"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 53779.12532115101}, "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": 56.0}, "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": 279.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "279.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 274.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 280.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.03, 58.53], [-85.5, 58.75], [-85.25, 58.65], [-85.0, 58.75], [-84.75, 58.65], [-84.5, 58.75], [-84.25, 58.65], [-84.0, 58.75], [-83.47, 58.53], [-83.32, 58.18], [-83.25, 58.15], [-83.0, 58.25], [-82.75, 58.15], [-82.5, 58.25], [-82.25, 58.15], [-82.0, 58.25], [-81.75, 58.15], [-81.5, 58.25], [-81.25, 58.15], [-81.0, 58.25], [-80.47, 58.03], [-80.32, 57.68], [-80.25, 57.65], [-80.0, 57.75], [-79.75, 57.65], [-79.5, 57.75], [-78.97, 57.53], [-78.75, 57.0], [-78.97, 56.47], [-79.32, 56.32], [-79.35, 56.25], [-79.25, 56.0], [-79.47, 55.47], [-80.0, 55.25], [-80.25, 55.35], [-80.5, 55.25], [-80.75, 55.35], [-81.0, 55.25], [-81.25, 55.35], [-81.5, 55.25], [-82.03, 55.47], [-82.18, 55.82], [-82.25, 55.85], [-82.5, 55.75], [-83.03, 55.97], [-83.18, 56.32], [-83.53, 56.47], [-83.68, 56.82], [-83.75, 56.85], [-84.0, 56.75], [-84.25, 56.85], [-84.5, 56.75], [-84.75, 56.85], [-85.0, 56.75], [-85.25, 56.85], [-85.5, 56.75], [-86.03, 56.97], [-86.25, 57.5], [-86.15, 57.75], [-86.25, 58.0], [-86.03, 58.53]]]]}, "2012-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.03, 58.53], [-85.5, 58.75], [-85.25, 58.65], [-85.0, 58.75], [-84.75, 58.65], [-84.5, 58.75], [-84.25, 58.65], [-84.0, 58.75], [-83.47, 58.53], [-83.32, 58.18], [-83.25, 58.15], [-83.0, 58.25], [-82.75, 58.15], [-82.5, 58.25], [-82.25, 58.15], [-82.0, 58.25], [-81.75, 58.15], [-81.5, 58.25], [-81.25, 58.15], [-81.0, 58.25], [-80.47, 58.03], [-80.32, 57.68], [-80.25, 57.65], [-80.0, 57.75], [-79.75, 57.65], [-79.5, 57.75], [-78.97, 57.53], [-78.75, 57.0], [-78.97, 56.47], [-79.32, 56.32], [-79.35, 56.25], [-79.25, 56.0], [-79.47, 55.47], [-80.0, 55.25], [-80.25, 55.35], [-80.5, 55.25], [-80.75, 55.35], [-81.0, 55.25], [-81.25, 55.35], [-81.5, 55.25], [-82.03, 55.47], [-82.18, 55.82], [-82.25, 55.85], [-82.5, 55.75], [-83.03, 55.97], [-83.18, 56.32], [-83.53, 56.47], [-83.68, 56.82], [-83.75, 56.85], [-84.0, 56.75], [-84.25, 56.85], [-84.5, 56.75], [-84.75, 56.85], [-85.0, 56.75], [-85.25, 56.85], [-85.5, 56.75], [-86.03, 56.97], [-86.25, 57.5], [-86.15, 57.75], [-86.25, 58.0], [-86.03, 58.53]]]]}, "2012-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.03, 58.53], [-85.5, 58.75], [-85.25, 58.65], [-85.0, 58.75], [-84.75, 58.65], [-84.5, 58.75], [-84.25, 58.65], [-84.0, 58.75], [-83.47, 58.53], [-83.32, 58.18], [-83.25, 58.15], [-83.0, 58.25], [-82.75, 58.15], [-82.5, 58.25], [-82.25, 58.15], [-82.0, 58.25], [-81.75, 58.15], [-81.5, 58.25], [-81.25, 58.15], [-81.0, 58.25], [-80.47, 58.03], [-80.32, 57.68], [-80.25, 57.65], [-80.0, 57.75], [-79.75, 57.65], [-79.5, 57.75], [-78.97, 57.53], [-78.75, 57.0], [-78.97, 56.47], [-79.32, 56.32], [-79.35, 56.25], [-79.25, 56.0], [-79.47, 55.47], [-80.0, 55.25], [-80.25, 55.35], [-80.5, 55.25], [-80.75, 55.35], [-81.0, 55.25], [-81.25, 55.35], [-81.5, 55.25], [-82.03, 55.47], [-82.18, 55.82], [-82.25, 55.85], [-82.5, 55.75], [-83.03, 55.97], [-83.18, 56.32], [-83.53, 56.47], [-83.68, 56.82], [-83.75, 56.85], [-84.0, 56.75], [-84.25, 56.85], [-84.5, 56.75], [-84.75, 56.85], [-85.0, 56.75], [-85.25, 56.85], [-85.5, 56.75], [-86.03, 56.97], [-86.25, 57.5], [-86.15, 57.75], [-86.25, 58.0], [-86.03, 58.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.785585218007014}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.068256218004306}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-14.761288335794916, -12.734557518551469, -15.967498740238852]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-10.67176938436694, -10.196896836031954, -14.469481307892408]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.816535712967667, 10.832903432397572, 7.555329508647684]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [12.392043647017971, 12.785585218007014, 8.8007826615939]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6672204587198287, 2.0335332259955567, 1.4510154985345511]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.231810896948444, 2.3142959392326783, 1.6048516311309586]}}