{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:27.589088", "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": "2024-Apr-01_to_2024-Apr-03_245.5_57.0"}, "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": 2024040000901}, "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": "April 01 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 03 2024"}, "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": 96876.06299677056}, "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": 57.0}, "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": 245.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "245.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 241.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 247.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-119.0, 57.25], [-118.75, 57.15], [-118.68, 57.18], [-118.53, 57.53], [-118.0, 57.75], [-117.75, 57.65], [-117.5, 57.75], [-117.25, 57.65], [-117.0, 57.75], [-116.75, 57.65], [-116.68, 57.68], [-116.53, 58.03], [-116.0, 58.25], [-115.75, 58.15], [-115.5, 58.25], [-115.25, 58.15], [-115.0, 58.25], [-114.47, 58.03], [-114.32, 57.68], [-113.97, 57.53], [-113.82, 57.18], [-113.47, 57.03], [-113.32, 56.68], [-112.97, 56.53], [-112.82, 56.18], [-112.47, 56.03], [-112.32, 55.68], [-111.97, 55.53], [-111.75, 55.0], [-111.97, 54.47], [-112.32, 54.32], [-112.47, 53.97], [-113.0, 53.75], [-113.25, 53.85], [-113.5, 53.75], [-114.03, 53.97], [-114.18, 54.32], [-114.25, 54.35], [-114.32, 54.32], [-114.47, 53.97], [-115.0, 53.75], [-115.25, 53.85], [-115.5, 53.75], [-115.75, 53.85], [-116.0, 53.75], [-116.53, 53.97], [-116.75, 54.5], [-116.62, 54.8], [-116.75, 54.85], [-117.0, 54.75], [-117.25, 54.85], [-117.5, 54.75], [-117.75, 54.85], [-118.0, 54.75], [-118.25, 54.85], [-118.5, 54.75], [-119.03, 54.97], [-119.18, 55.32], [-119.53, 55.47], [-119.75, 56.0], [-119.65, 56.25], [-119.75, 56.5], [-119.53, 57.03], [-119.0, 57.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.75, 56.5], [-119.53, 57.03], [-119.0, 57.25], [-118.75, 57.15], [-118.68, 57.18], [-118.53, 57.53], [-118.0, 57.75], [-117.75, 57.65], [-117.5, 57.75], [-117.25, 57.65], [-117.0, 57.75], [-116.75, 57.65], [-116.68, 57.68], [-116.53, 58.03], [-116.0, 58.25], [-115.75, 58.15], [-115.5, 58.25], [-115.25, 58.15], [-115.0, 58.25], [-114.47, 58.03], [-114.32, 57.68], [-113.97, 57.53], [-113.82, 57.18], [-113.47, 57.03], [-113.32, 56.68], [-112.97, 56.53], [-112.82, 56.18], [-112.47, 56.03], [-112.32, 55.68], [-111.97, 55.53], [-111.75, 55.0], [-111.97, 54.47], [-112.32, 54.32], [-112.47, 53.97], [-113.0, 53.75], [-113.25, 53.85], [-113.5, 53.75], [-114.03, 53.97], [-114.18, 54.32], [-114.25, 54.35], [-114.32, 54.32], [-114.47, 53.97], [-115.0, 53.75], [-115.25, 53.85], [-115.5, 53.75], [-115.75, 53.85], [-116.0, 53.75], [-116.53, 53.97], [-116.75, 54.5], [-116.62, 54.8], [-116.75, 54.85], [-117.0, 54.75], [-117.25, 54.85], [-117.5, 54.75], [-117.75, 54.85], [-118.0, 54.75], [-118.25, 54.85], [-118.5, 54.75], [-119.03, 54.97], [-119.18, 55.32], [-119.53, 55.47], [-119.75, 56.0], [-119.65, 56.25], [-119.75, 56.5]]]]}, "2024-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.75, 56.5], [-119.53, 57.03], [-119.0, 57.25], [-118.75, 57.15], [-118.68, 57.18], [-118.53, 57.53], [-118.0, 57.75], [-117.75, 57.65], [-117.5, 57.75], [-117.25, 57.65], [-117.0, 57.75], [-116.75, 57.65], [-116.68, 57.68], [-116.53, 58.03], [-116.0, 58.25], [-115.75, 58.15], [-115.5, 58.25], [-115.25, 58.15], [-115.0, 58.25], [-114.47, 58.03], [-114.32, 57.68], [-113.97, 57.53], [-113.82, 57.18], [-113.47, 57.03], [-113.32, 56.68], [-112.97, 56.53], [-112.82, 56.18], [-112.47, 56.03], [-112.32, 55.68], [-111.97, 55.53], [-111.75, 55.0], [-111.97, 54.47], [-112.32, 54.32], [-112.47, 53.97], [-113.0, 53.75], [-113.25, 53.85], [-113.5, 53.75], [-114.03, 53.97], [-114.18, 54.32], [-114.25, 54.35], [-114.32, 54.32], [-114.47, 53.97], [-115.0, 53.75], [-115.25, 53.85], [-115.5, 53.75], [-115.75, 53.85], [-116.0, 53.75], [-116.53, 53.97], [-116.75, 54.5], [-116.62, 54.8], [-116.75, 54.85], [-117.0, 54.75], [-117.25, 54.85], [-117.5, 54.75], [-117.75, 54.85], [-118.0, 54.75], [-118.25, 54.85], [-118.5, 54.75], [-119.03, 54.97], [-119.18, 55.32], [-119.53, 55.47], [-119.75, 56.0], [-119.65, 56.25], [-119.75, 56.5]]]]}, "2024-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.75, 56.5], [-119.53, 57.03], [-119.0, 57.25], [-118.75, 57.15], [-118.68, 57.18], [-118.53, 57.53], [-118.0, 57.75], [-117.75, 57.65], [-117.5, 57.75], [-117.25, 57.65], [-117.0, 57.75], [-116.75, 57.65], [-116.68, 57.68], [-116.53, 58.03], [-116.0, 58.25], [-115.75, 58.15], [-115.5, 58.25], [-115.25, 58.15], [-115.0, 58.25], [-114.47, 58.03], [-114.32, 57.68], [-113.97, 57.53], [-113.82, 57.18], [-113.47, 57.03], [-113.32, 56.68], [-112.97, 56.53], [-112.82, 56.18], [-112.47, 56.03], [-112.32, 55.68], [-111.97, 55.53], [-111.75, 55.0], [-111.97, 54.47], [-112.32, 54.32], [-112.47, 53.97], [-113.0, 53.75], [-113.25, 53.85], [-113.5, 53.75], [-114.03, 53.97], [-114.18, 54.32], [-114.25, 54.35], [-114.32, 54.32], [-114.47, 53.97], [-115.0, 53.75], [-115.25, 53.85], [-115.5, 53.75], [-115.75, 53.85], [-116.0, 53.75], [-116.53, 53.97], [-116.75, 54.5], [-116.62, 54.8], [-116.75, 54.85], [-117.0, 54.75], [-117.25, 54.85], [-117.5, 54.75], [-117.75, 54.85], [-118.0, 54.75], [-118.25, 54.85], [-118.5, 54.75], [-119.03, 54.97], [-119.18, 55.32], [-119.53, 55.47], [-119.75, 56.0], [-119.65, 56.25], [-119.75, 56.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.567072007071431}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.191835992207636}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.754166884623942, 6.5283590993904, 6.43224793131759]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.4391408225984605, 8.39249943879662, 8.347105175362572]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.761920516970398, 7.5197170629501, 7.293870396702409]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.974045530612955, 9.216681708910528, 9.567072007071431]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.0633171465540676, 1.1945533343142967, 1.1872909367286353]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1798808014929845, 1.4196542066696238, 1.4468152004656254]}}