{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:26.892442", "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-Oct-09_to_2025-Oct-11_248.0_41.0"}, "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": 2025100001463}, "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": "October 09 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 11 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": 51353.66602164489}, "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": 41.0}, "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": 248.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "248.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 247.5}, "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": 40.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-112.03, 42.03], [-111.5, 42.25], [-110.97, 42.03], [-110.82, 41.68], [-110.75, 41.65], [-110.5, 41.75], [-110.25, 41.65], [-110.18, 41.68], [-110.04, 42.0], [-110.18, 42.32], [-110.53, 42.47], [-110.75, 43.0], [-110.53, 43.53], [-110.0, 43.75], [-109.47, 43.53], [-109.32, 43.18], [-108.97, 43.03], [-108.82, 42.68], [-108.47, 42.53], [-108.25, 42.0], [-108.35, 41.75], [-108.25, 41.5], [-108.47, 40.97], [-108.82, 40.82], [-108.85, 40.75], [-108.82, 40.68], [-108.47, 40.53], [-108.25, 40.0], [-108.47, 39.47], [-109.0, 39.25], [-109.25, 39.35], [-109.5, 39.25], [-110.03, 39.47], [-110.18, 39.82], [-110.3, 39.88], [-110.47, 39.47], [-111.0, 39.25], [-111.25, 39.35], [-111.5, 39.25], [-112.03, 39.47], [-112.18, 39.82], [-112.25, 39.85], [-112.5, 39.75], [-113.03, 39.97], [-113.25, 40.5], [-113.03, 41.03], [-112.68, 41.18], [-112.53, 41.53], [-112.18, 41.68], [-112.03, 42.03]]]]}}, "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": {"2025-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.53, 41.53], [-112.18, 41.68], [-112.03, 42.03], [-111.5, 42.25], [-110.97, 42.03], [-110.82, 41.68], [-110.75, 41.65], [-110.5, 41.75], [-110.25, 41.65], [-110.18, 41.68], [-110.03999999999999, 42.0], [-110.18, 42.32], [-110.53, 42.47], [-110.75, 43.0], [-110.53, 43.53], [-110.0, 43.75], [-109.47, 43.53], [-109.32, 43.18], [-108.97, 43.03], [-108.82, 42.68], [-108.47, 42.53], [-108.25, 42.0], [-108.35, 41.75], [-108.25, 41.5], [-108.47, 40.97], [-108.82, 40.82], [-108.85, 40.75], [-108.82, 40.68], [-108.47, 40.53], [-108.25, 40.0], [-108.47, 39.47], [-109.0, 39.25], [-109.25, 39.35], [-109.5, 39.25], [-110.03, 39.47], [-110.18, 39.82], [-110.30000000000001, 39.88], [-110.47, 39.47], [-111.0, 39.25], [-111.25, 39.35], [-111.5, 39.25], [-112.03, 39.47], [-112.18, 39.82], [-112.25, 39.85], [-112.5, 39.75], [-113.03, 39.97], [-113.25, 40.5], [-113.03, 41.03], [-112.68, 41.18], [-112.53, 41.53]]]]}, "2025-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.53, 41.53], [-112.18, 41.68], [-112.03, 42.03], [-111.5, 42.25], [-110.97, 42.03], [-110.82, 41.68], [-110.75, 41.65], [-110.5, 41.75], [-110.25, 41.65], [-110.18, 41.68], [-110.03999999999999, 42.0], [-110.18, 42.32], [-110.53, 42.47], [-110.75, 43.0], [-110.53, 43.53], [-110.0, 43.75], [-109.47, 43.53], [-109.32, 43.18], [-108.97, 43.03], [-108.82, 42.68], [-108.47, 42.53], [-108.25, 42.0], [-108.35, 41.75], [-108.25, 41.5], [-108.47, 40.97], [-108.82, 40.82], [-108.85, 40.75], [-108.82, 40.68], [-108.47, 40.53], [-108.25, 40.0], [-108.47, 39.47], [-109.0, 39.25], [-109.25, 39.35], [-109.5, 39.25], [-110.03, 39.47], [-110.18, 39.82], [-110.30000000000001, 39.88], [-110.47, 39.47], [-111.0, 39.25], [-111.25, 39.35], [-111.5, 39.25], [-112.03, 39.47], [-112.18, 39.82], [-112.25, 39.85], [-112.5, 39.75], [-113.03, 39.97], [-113.25, 40.5], [-113.03, 41.03], [-112.68, 41.18], [-112.53, 41.53]]]]}, "2025-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.53, 41.53], [-112.18, 41.68], [-112.03, 42.03], [-111.5, 42.25], [-110.97, 42.03], [-110.82, 41.68], [-110.75, 41.65], [-110.5, 41.75], [-110.25, 41.65], [-110.18, 41.68], [-110.03999999999999, 42.0], [-110.18, 42.32], [-110.53, 42.47], [-110.75, 43.0], [-110.53, 43.53], [-110.0, 43.75], [-109.47, 43.53], [-109.32, 43.18], [-108.97, 43.03], [-108.82, 42.68], [-108.47, 42.53], [-108.25, 42.0], [-108.35, 41.75], [-108.25, 41.5], [-108.47, 40.97], [-108.82, 40.82], [-108.85, 40.75], [-108.82, 40.68], [-108.47, 40.53], [-108.25, 40.0], [-108.47, 39.47], [-109.0, 39.25], [-109.25, 39.35], [-109.5, 39.25], [-110.03, 39.47], [-110.18, 39.82], [-110.30000000000001, 39.88], [-110.47, 39.47], [-111.0, 39.25], [-111.25, 39.35], [-111.5, 39.25], [-112.03, 39.47], [-112.18, 39.82], [-112.25, 39.85], [-112.5, 39.75], [-113.03, 39.97], [-113.25, 40.5], [-113.03, 41.03], [-112.68, 41.18], [-112.53, 41.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.845431054330902}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.112613644346384}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.601084414395416, 13.807472830107713, 14.095479121352696]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.15763626098635, 18.817371622721396, 18.88981653849288]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.753146496028574, 6.105875236844389, 6.478819200166191]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.841316985021081, 7.340581649212027, 7.845431054330902]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.435307207135252, 1.5144524398428443, 1.583973208437129]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6035929320843618, 1.9543167394598966, 1.9138022219611361]}}