{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:28.575659", "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-03_to_2024-Apr-05_254.0_45.5"}, "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": 2024040000986}, "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 03 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 05 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": 53867.273429008106}, "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": ["United States"]}, "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": 45.5}, "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": 254.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "254.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 250.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 254.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-108.75, 46.15], [-108.5, 46.25], [-108.0, 46.04], [-107.68, 46.18], [-107.65, 46.25], [-107.75, 46.5], [-107.65, 46.75], [-107.75, 47.0], [-107.65, 47.25], [-107.75, 47.5], [-107.65, 47.75], [-107.75, 48.0], [-107.53, 48.53], [-107.0, 48.75], [-106.47, 48.53], [-106.32, 48.18], [-105.97, 48.03], [-105.75, 47.5], [-105.85, 47.25], [-105.75, 47.0], [-105.85, 46.75], [-105.82, 46.68], [-105.47, 46.53], [-105.25, 46.0], [-105.35, 45.75], [-105.25, 45.5], [-105.35, 45.25], [-105.25, 45.0], [-105.47, 44.47], [-105.82, 44.32], [-105.97, 43.97], [-106.5, 43.75], [-106.75, 43.85], [-107.0, 43.75], [-107.53, 43.97], [-107.68, 44.32], [-107.75, 44.35], [-108.0, 44.25], [-108.25, 44.35], [-108.5, 44.25], [-109.0, 44.46], [-109.5, 44.25], [-110.03, 44.47], [-110.25, 45.0], [-110.03, 45.53], [-109.68, 45.68], [-109.53, 46.03], [-109.0, 46.25], [-108.75, 46.15]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.53, 46.03], [-109.0, 46.25], [-108.75, 46.15], [-108.5, 46.25], [-108.0, 46.04], [-107.68, 46.18], [-107.65, 46.25], [-107.75, 46.5], [-107.65, 46.75], [-107.75, 47.0], [-107.65, 47.25], [-107.75, 47.5], [-107.65, 47.75], [-107.75, 48.0], [-107.53, 48.53], [-107.0, 48.75], [-106.47, 48.53], [-106.32, 48.18], [-105.97, 48.03], [-105.75, 47.5], [-105.85, 47.25], [-105.75, 47.0], [-105.85, 46.75], [-105.82, 46.68], [-105.47, 46.53], [-105.25, 46.0], [-105.35, 45.75], [-105.25, 45.5], [-105.35, 45.25], [-105.25, 45.0], [-105.47, 44.47], [-105.82, 44.32], [-105.97, 43.97], [-106.5, 43.75], [-106.75, 43.85], [-107.0, 43.75], [-107.53, 43.97], [-107.68, 44.32], [-107.75, 44.35], [-108.0, 44.25], [-108.25, 44.35], [-108.5, 44.25], [-109.0, 44.46], [-109.5, 44.25], [-110.03, 44.47], [-110.25, 45.0], [-110.03, 45.53], [-109.68, 45.68], [-109.53, 46.03]]]]}, "2024-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.53, 46.03], [-109.0, 46.25], [-108.75, 46.15], [-108.5, 46.25], [-108.0, 46.04], [-107.68, 46.18], [-107.65, 46.25], [-107.75, 46.5], [-107.65, 46.75], [-107.75, 47.0], [-107.65, 47.25], [-107.75, 47.5], [-107.65, 47.75], [-107.75, 48.0], [-107.53, 48.53], [-107.0, 48.75], [-106.47, 48.53], [-106.32, 48.18], [-105.97, 48.03], [-105.75, 47.5], [-105.85, 47.25], [-105.75, 47.0], [-105.85, 46.75], [-105.82, 46.68], [-105.47, 46.53], [-105.25, 46.0], [-105.35, 45.75], [-105.25, 45.5], [-105.35, 45.25], [-105.25, 45.0], [-105.47, 44.47], [-105.82, 44.32], [-105.97, 43.97], [-106.5, 43.75], [-106.75, 43.85], [-107.0, 43.75], [-107.53, 43.97], [-107.68, 44.32], [-107.75, 44.35], [-108.0, 44.25], [-108.25, 44.35], [-108.5, 44.25], [-109.0, 44.46], [-109.5, 44.25], [-110.03, 44.47], [-110.25, 45.0], [-110.03, 45.53], [-109.68, 45.68], [-109.53, 46.03]]]]}, "2024-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.53, 46.03], [-109.0, 46.25], [-108.75, 46.15], [-108.5, 46.25], [-108.0, 46.04], [-107.68, 46.18], [-107.65, 46.25], [-107.75, 46.5], [-107.65, 46.75], [-107.75, 47.0], [-107.65, 47.25], [-107.75, 47.5], [-107.65, 47.75], [-107.75, 48.0], [-107.53, 48.53], [-107.0, 48.75], [-106.47, 48.53], [-106.32, 48.18], [-105.97, 48.03], [-105.75, 47.5], [-105.85, 47.25], [-105.75, 47.0], [-105.85, 46.75], [-105.82, 46.68], [-105.47, 46.53], [-105.25, 46.0], [-105.35, 45.75], [-105.25, 45.5], [-105.35, 45.25], [-105.25, 45.0], [-105.47, 44.47], [-105.82, 44.32], [-105.97, 43.97], [-106.5, 43.75], [-106.75, 43.85], [-107.0, 43.75], [-107.53, 43.97], [-107.68, 44.32], [-107.75, 44.35], [-108.0, 44.25], [-108.25, 44.35], [-108.5, 44.25], [-109.0, 44.46], [-109.5, 44.25], [-110.03, 44.47], [-110.25, 45.0], [-110.03, 45.53], [-109.68, 45.68], [-109.53, 46.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.60958626727222}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.71235615697828}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.788012487208334, 13.304199866086094, 13.985243515492698]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.219256479381102, 17.032751803301892, 18.526808292494366]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.654523711943154, 8.998117478970647, 9.484427280021034]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.724474514358803, 11.28239358981125, 12.60958626727222]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3812138297609353, 1.630383489942538, 1.764223340518847]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5198936142528472, 1.878085093576068, 2.1721611171008144]}}