{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:58.804013", "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": "2025-Nov-10_to_2025-Nov-12_247.0_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": 2025110001611}, "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": "November 10 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 12 2025"}, "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": 67559.2050591898}, "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": 247.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "247.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 246.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 251.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.0}, "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": [[[[-113.5, 57.75], [-113.25, 57.65], [-113.18, 57.68], [-113.03, 58.03], [-112.5, 58.25], [-112.25, 58.15], [-112.0, 58.25], [-111.47, 58.03], [-111.32, 57.68], [-111.25, 57.65], [-111.0, 57.75], [-110.75, 57.65], [-110.5, 57.75], [-109.97, 57.53], [-109.82, 57.18], [-109.75, 57.15], [-109.5, 57.25], [-108.97, 57.03], [-108.82, 56.68], [-108.47, 56.53], [-108.25, 56.0], [-108.35, 55.75], [-108.25, 55.5], [-108.35, 55.25], [-108.25, 55.0], [-108.47, 54.47], [-109.0, 54.25], [-109.25, 54.35], [-109.37, 54.3], [-109.25, 54.0], [-109.47, 53.47], [-110.0, 53.25], [-110.53, 53.47], [-110.68, 53.82], [-110.75, 53.85], [-111.0, 53.75], [-111.25, 53.85], [-111.5, 53.75], [-111.75, 53.85], [-112.0, 53.75], [-112.53, 53.97], [-112.75, 54.5], [-112.65, 54.75], [-112.75, 55.0], [-112.53, 55.53], [-112.0, 55.75], [-112.25, 55.85], [-112.5, 55.75], [-112.75, 55.85], [-113.0, 55.75], [-113.25, 55.85], [-113.5, 55.75], [-114.03, 55.97], [-114.25, 56.5], [-114.15, 56.75], [-114.25, 57.0], [-114.03, 57.53], [-113.5, 57.75]], [[-111.75, 55.65], [-111.68, 55.68], [-111.65, 55.75], [-111.7, 55.88], [-112.0, 55.75], [-111.75, 55.65]]]]}}, "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": {"2025-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.25, 57.0], [-114.03, 57.53], [-113.5, 57.75], [-113.25, 57.65], [-113.18, 57.68], [-113.03, 58.03], [-112.5, 58.25], [-112.25, 58.15], [-112.0, 58.25], [-111.47, 58.03], [-111.32, 57.68], [-111.25, 57.65], [-111.0, 57.75], [-110.75, 57.65], [-110.5, 57.75], [-109.97, 57.53], [-109.82, 57.18], [-109.75, 57.15], [-109.5, 57.25], [-108.97, 57.03], [-108.82, 56.68], [-108.47, 56.53], [-108.25, 56.0], [-108.35, 55.75], [-108.25, 55.5], [-108.35, 55.25], [-108.25, 55.0], [-108.47, 54.47], [-109.0, 54.25], [-109.25, 54.35], [-109.37, 54.3], [-109.25, 54.0], [-109.47, 53.47], [-110.0, 53.25], [-110.53, 53.47], [-110.68, 53.82], [-110.75, 53.85], [-111.0, 53.75], [-111.25, 53.85], [-111.5, 53.75], [-111.75, 53.85], [-112.0, 53.75], [-112.53, 53.97], [-112.75, 54.5], [-112.65, 54.75], [-112.75, 55.0], [-112.53, 55.53], [-112.0, 55.75], [-112.25, 55.85], [-112.5, 55.75], [-112.75, 55.85], [-113.0, 55.75], [-113.25, 55.85], [-113.5, 55.75], [-114.03, 55.97], [-114.25, 56.5], [-114.15, 56.75], [-114.25, 57.0]], [[-111.75, 55.65], [-111.68, 55.68], [-111.65, 55.75], [-111.69999999999999, 55.88], [-112.0, 55.75], [-111.75, 55.65]]]]}, "2025-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.25, 57.0], [-114.03, 57.53], [-113.5, 57.75], [-113.25, 57.65], [-113.18, 57.68], [-113.03, 58.03], [-112.5, 58.25], [-112.25, 58.15], [-112.0, 58.25], [-111.47, 58.03], [-111.32, 57.68], [-111.25, 57.65], [-111.0, 57.75], [-110.75, 57.65], [-110.5, 57.75], [-109.97, 57.53], [-109.82, 57.18], [-109.75, 57.15], [-109.5, 57.25], [-108.97, 57.03], [-108.82, 56.68], [-108.47, 56.53], [-108.25, 56.0], [-108.35, 55.75], [-108.25, 55.5], [-108.35, 55.25], [-108.25, 55.0], [-108.47, 54.47], [-109.0, 54.25], [-109.25, 54.35], [-109.37, 54.3], [-109.25, 54.0], [-109.47, 53.47], [-110.0, 53.25], [-110.53, 53.47], [-110.68, 53.82], [-110.75, 53.85], [-111.0, 53.75], [-111.25, 53.85], [-111.5, 53.75], [-111.75, 53.85], [-112.0, 53.75], [-112.53, 53.97], [-112.75, 54.5], [-112.65, 54.75], [-112.75, 55.0], [-112.53, 55.53], [-112.0, 55.75], [-112.25, 55.85], [-112.5, 55.75], [-112.75, 55.85], [-113.0, 55.75], [-113.25, 55.85], [-113.5, 55.75], [-114.03, 55.97], [-114.25, 56.5], [-114.15, 56.75], [-114.25, 57.0]], [[-111.75, 55.65], [-111.68, 55.68], [-111.65, 55.75], [-111.69999999999999, 55.88], [-112.0, 55.75], [-111.75, 55.65]]]]}, "2025-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.25, 57.0], [-114.03, 57.53], [-113.5, 57.75], [-113.25, 57.65], [-113.18, 57.68], [-113.03, 58.03], [-112.5, 58.25], [-112.25, 58.15], [-112.0, 58.25], [-111.47, 58.03], [-111.32, 57.68], [-111.25, 57.65], [-111.0, 57.75], [-110.75, 57.65], [-110.5, 57.75], [-109.97, 57.53], [-109.82, 57.18], [-109.75, 57.15], [-109.5, 57.25], [-108.97, 57.03], [-108.82, 56.68], [-108.47, 56.53], [-108.25, 56.0], [-108.35, 55.75], [-108.25, 55.5], [-108.35, 55.25], [-108.25, 55.0], [-108.47, 54.47], [-109.0, 54.25], [-109.25, 54.35], [-109.37, 54.3], [-109.25, 54.0], [-109.47, 53.47], [-110.0, 53.25], [-110.53, 53.47], [-110.68, 53.82], [-110.75, 53.85], [-111.0, 53.75], [-111.25, 53.85], [-111.5, 53.75], [-111.75, 53.85], [-112.0, 53.75], [-112.53, 53.97], [-112.75, 54.5], [-112.65, 54.75], [-112.75, 55.0], [-112.53, 55.53], [-112.0, 55.75], [-112.25, 55.85], [-112.5, 55.75], [-112.75, 55.85], [-113.0, 55.75], [-113.25, 55.85], [-113.5, 55.75], [-114.03, 55.97], [-114.25, 56.5], [-114.15, 56.75], [-114.25, 57.0]], [[-111.75, 55.65], [-111.68, 55.68], [-111.65, 55.75], [-111.69999999999999, 55.88], [-112.0, 55.75], [-111.75, 55.65]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.58840817164878}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.660492202877681}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.7381230476575524, 2.3409681336492554, 0.440987409281945]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.5937858581543196, 4.117556508382165, 1.6875485738118527]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.763732351973065, 8.520440076428741, 6.697304180231236]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.58840817164878, 9.38786309284194, 7.2735916924557955]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4039214459851193, 1.5359172127072107, 1.1997572093939401]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.737528325383416, 1.6703040222058678, 1.2666857401181977]}}