{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:00.910081", "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-Jan-23_to_2010-Jan-25_274.5_58.5"}, "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": 2010010002380}, "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 23 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 25 2010"}, "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": 72321.91143392051}, "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": 58.5}, "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": 274.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "274.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 272.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 276.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 53.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.65, 57.25], [-87.75, 57.5], [-87.53, 58.03], [-87.0, 58.25], [-86.75, 58.15], [-86.5, 58.25], [-86.25, 58.15], [-86.12, 58.2], [-86.25, 58.5], [-86.03, 59.03], [-85.68, 59.18], [-85.53, 59.53], [-85.0, 59.75], [-84.75, 59.65], [-84.5, 59.75], [-83.97, 59.53], [-83.75, 59.0], [-83.85, 58.75], [-83.75, 58.5], [-83.85, 58.25], [-83.75, 58.0], [-83.97, 57.47], [-84.32, 57.32], [-84.35, 57.25], [-84.25, 57.0], [-84.37, 56.7], [-83.97, 56.53], [-83.75, 56.0], [-83.97, 55.47], [-84.32, 55.32], [-84.35, 55.25], [-84.32, 55.18], [-84.25, 55.15], [-84.0, 55.25], [-83.47, 55.03], [-83.32, 54.68], [-82.97, 54.53], [-82.75, 54.0], [-82.85, 53.75], [-82.75, 53.5], [-82.97, 52.97], [-83.5, 52.75], [-83.75, 52.85], [-84.0, 52.75], [-84.5, 52.96], [-85.0, 52.75], [-85.53, 52.97], [-85.68, 53.32], [-86.03, 53.47], [-86.25, 54.0], [-86.15, 54.25], [-86.25, 54.5], [-86.15, 54.75], [-86.25, 55.0], [-86.15, 55.25], [-86.18, 55.32], [-86.25, 55.35], [-86.5, 55.25], [-87.03, 55.47], [-87.18, 55.82], [-87.53, 55.97], [-87.75, 56.5], [-87.65, 56.75], [-87.75, 57.0], [-87.65, 57.25]]]]}, "2010-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.65, 57.25], [-87.75, 57.5], [-87.53, 58.03], [-87.0, 58.25], [-86.75, 58.15], [-86.5, 58.25], [-86.25, 58.15], [-86.12, 58.2], [-86.25, 58.5], [-86.03, 59.03], [-85.68, 59.18], [-85.53, 59.53], [-85.0, 59.75], [-84.75, 59.65], [-84.5, 59.75], [-83.97, 59.53], [-83.75, 59.0], [-83.85, 58.75], [-83.75, 58.5], [-83.85, 58.25], [-83.75, 58.0], [-83.97, 57.47], [-84.32, 57.32], [-84.35, 57.25], [-84.25, 57.0], [-84.37, 56.7], [-83.97, 56.53], [-83.75, 56.0], [-83.97, 55.47], [-84.32, 55.32], [-84.35, 55.25], [-84.32, 55.18], [-84.25, 55.15], [-84.0, 55.25], [-83.47, 55.03], [-83.32, 54.68], [-82.97, 54.53], [-82.75, 54.0], [-82.85, 53.75], [-82.75, 53.5], [-82.97, 52.97], [-83.5, 52.75], [-83.75, 52.85], [-84.0, 52.75], [-84.5, 52.96], [-85.0, 52.75], [-85.53, 52.97], [-85.68, 53.32], [-86.03, 53.47], [-86.25, 54.0], [-86.15, 54.25], [-86.25, 54.5], [-86.15, 54.75], [-86.25, 55.0], [-86.15, 55.25], [-86.18, 55.32], [-86.25, 55.35], [-86.5, 55.25], [-87.03, 55.47], [-87.18, 55.82], [-87.53, 55.97], [-87.75, 56.5], [-87.65, 56.75], [-87.75, 57.0], [-87.65, 57.25]]]]}, "2010-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.65, 57.25], [-87.75, 57.5], [-87.53, 58.03], [-87.0, 58.25], [-86.75, 58.15], [-86.5, 58.25], [-86.25, 58.15], [-86.12, 58.2], [-86.25, 58.5], [-86.03, 59.03], [-85.68, 59.18], [-85.53, 59.53], [-85.0, 59.75], [-84.75, 59.65], [-84.5, 59.75], [-83.97, 59.53], [-83.75, 59.0], [-83.85, 58.75], [-83.75, 58.5], [-83.85, 58.25], [-83.75, 58.0], [-83.97, 57.47], [-84.32, 57.32], [-84.35, 57.25], [-84.25, 57.0], [-84.37, 56.7], [-83.97, 56.53], [-83.75, 56.0], [-83.97, 55.47], [-84.32, 55.32], [-84.35, 55.25], [-84.32, 55.18], [-84.25, 55.15], [-84.0, 55.25], [-83.47, 55.03], [-83.32, 54.68], [-82.97, 54.53], [-82.75, 54.0], [-82.85, 53.75], [-82.75, 53.5], [-82.97, 52.97], [-83.5, 52.75], [-83.75, 52.85], [-84.0, 52.75], [-84.5, 52.96], [-85.0, 52.75], [-85.53, 52.97], [-85.68, 53.32], [-86.03, 53.47], [-86.25, 54.0], [-86.15, 54.25], [-86.25, 54.5], [-86.15, 54.75], [-86.25, 55.0], [-86.15, 55.25], [-86.18, 55.32], [-86.25, 55.35], [-86.5, 55.25], [-87.03, 55.47], [-87.18, 55.82], [-87.53, 55.97], [-87.75, 56.5], [-87.65, 56.75], [-87.75, 57.0], [-87.65, 57.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 14.582196597613574}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 10.038566631074172}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-13.881582566235807, -12.15355054114491, -14.245907836544973]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-9.713288401347995, -8.799741181827642, -8.908698846041773]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.612132658480238, 11.326312264901741, 9.177254969840543]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [13.437331636040284, 14.582196597613574, 13.423507608888514]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4803154998021522, 1.7888312581266388, 1.4222345841396378]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.727873749438721, 2.2404170880550764, 1.7069039825387746]}}