{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:25.706263", "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-07_to_2025-Oct-09_203.5_56.0"}, "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": 2025100001374}, "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 07 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 09 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": 64436.83578467627}, "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": ["Pacific Ocean"]}, "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": 56.0}, "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": 203.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "203.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 202.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 207.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 53.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-157.75, 55.0], [-157.53, 55.53], [-157.18, 55.68], [-157.15, 55.75], [-157.18, 55.82], [-157.25, 55.85], [-157.5, 55.75], [-158.03, 55.97], [-158.25, 56.5], [-158.03, 57.03], [-157.5, 57.25], [-157.25, 57.15], [-157.18, 57.18], [-157.03, 57.53], [-156.5, 57.75], [-156.25, 57.65], [-156.0, 57.75], [-155.47, 57.53], [-155.32, 57.18], [-155.25, 57.15], [-155.0, 57.25], [-154.75, 57.15], [-154.5, 57.25], [-154.25, 57.15], [-154.18, 57.18], [-154.03, 57.53], [-153.5, 57.75], [-153.25, 57.65], [-153.0, 57.75], [-152.75, 57.65], [-152.5, 57.75], [-151.97, 57.53], [-151.75, 57.0], [-151.97, 56.47], [-152.5, 56.25], [-152.75, 56.35], [-152.82, 56.32], [-152.97, 55.97], [-153.37, 55.8], [-153.25, 55.5], [-153.47, 54.97], [-153.82, 54.82], [-153.97, 54.47], [-154.5, 54.25], [-154.75, 54.35], [-154.82, 54.32], [-154.97, 53.97], [-155.5, 53.75], [-155.8, 53.88], [-155.97, 53.47], [-156.5, 53.25], [-156.75, 53.35], [-157.0, 53.25], [-157.25, 53.35], [-157.32, 53.32], [-157.47, 52.97], [-158.0, 52.75], [-158.53, 52.97], [-158.75, 53.5], [-158.53, 54.03], [-158.18, 54.18], [-158.03, 54.53], [-157.62, 54.7], [-157.75, 55.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America", "N.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-158.03, 54.53], [-157.62, 54.7], [-157.75, 55.0], [-157.53, 55.53], [-157.18, 55.68], [-157.15, 55.75], [-157.18, 55.82], [-157.25, 55.85], [-157.5, 55.75], [-158.03, 55.97], [-158.25, 56.5], [-158.03, 57.03], [-157.5, 57.25], [-157.25, 57.15], [-157.18, 57.18], [-157.03, 57.53], [-156.5, 57.75], [-156.25, 57.65], [-156.0, 57.75], [-155.47, 57.53], [-155.32, 57.18], [-155.25, 57.15], [-155.0, 57.25], [-154.75, 57.15], [-154.5, 57.25], [-154.25, 57.15], [-154.18, 57.18], [-154.03, 57.53], [-153.5, 57.75], [-153.25, 57.65], [-153.0, 57.75], [-152.75, 57.65], [-152.5, 57.75], [-151.97, 57.53], [-151.75, 57.0], [-151.97, 56.47], [-152.5, 56.25], [-152.75, 56.35], [-152.82, 56.32], [-152.97, 55.97], [-153.37, 55.8], [-153.25, 55.5], [-153.47, 54.97], [-153.82, 54.82], [-153.97, 54.47], [-154.5, 54.25], [-154.75, 54.35], [-154.82, 54.32], [-154.97, 53.97], [-155.5, 53.75], [-155.8, 53.88], [-155.97, 53.47], [-156.5, 53.25], [-156.75, 53.35], [-157.0, 53.25], [-157.25, 53.35], [-157.32, 53.32], [-157.47, 52.97], [-158.0, 52.75], [-158.53, 52.97], [-158.75, 53.5], [-158.53, 54.03], [-158.18, 54.18], [-158.03, 54.53]]]]}, "2025-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-158.03, 54.53], [-157.62, 54.7], [-157.75, 55.0], [-157.53, 55.53], [-157.18, 55.68], [-157.15, 55.75], [-157.18, 55.82], [-157.25, 55.85], [-157.5, 55.75], [-158.03, 55.97], [-158.25, 56.5], [-158.03, 57.03], [-157.5, 57.25], [-157.25, 57.15], [-157.18, 57.18], [-157.03, 57.53], [-156.5, 57.75], [-156.25, 57.65], [-156.0, 57.75], [-155.47, 57.53], [-155.32, 57.18], [-155.25, 57.15], [-155.0, 57.25], [-154.75, 57.15], [-154.5, 57.25], [-154.25, 57.15], [-154.18, 57.18], [-154.03, 57.53], [-153.5, 57.75], [-153.25, 57.65], [-153.0, 57.75], [-152.75, 57.65], [-152.5, 57.75], [-151.97, 57.53], [-151.75, 57.0], [-151.97, 56.47], [-152.5, 56.25], [-152.75, 56.35], [-152.82, 56.32], [-152.97, 55.97], [-153.37, 55.8], [-153.25, 55.5], [-153.47, 54.97], [-153.82, 54.82], [-153.97, 54.47], [-154.5, 54.25], [-154.75, 54.35], [-154.82, 54.32], [-154.97, 53.97], [-155.5, 53.75], [-155.8, 53.88], [-155.97, 53.47], [-156.5, 53.25], [-156.75, 53.35], [-157.0, 53.25], [-157.25, 53.35], [-157.32, 53.32], [-157.47, 52.97], [-158.0, 52.75], [-158.53, 52.97], [-158.75, 53.5], [-158.53, 54.03], [-158.18, 54.18], [-158.03, 54.53]]]]}, "2025-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-158.03, 54.53], [-157.62, 54.7], [-157.75, 55.0], [-157.53, 55.53], [-157.18, 55.68], [-157.15, 55.75], [-157.18, 55.82], [-157.25, 55.85], [-157.5, 55.75], [-158.03, 55.97], [-158.25, 56.5], [-158.03, 57.03], [-157.5, 57.25], [-157.25, 57.15], [-157.18, 57.18], [-157.03, 57.53], [-156.5, 57.75], [-156.25, 57.65], [-156.0, 57.75], [-155.47, 57.53], [-155.32, 57.18], [-155.25, 57.15], [-155.0, 57.25], [-154.75, 57.15], [-154.5, 57.25], [-154.25, 57.15], [-154.18, 57.18], [-154.03, 57.53], [-153.5, 57.75], [-153.25, 57.65], [-153.0, 57.75], [-152.75, 57.65], [-152.5, 57.75], [-151.97, 57.53], [-151.75, 57.0], [-151.97, 56.47], [-152.5, 56.25], [-152.75, 56.35], [-152.82, 56.32], [-152.97, 55.97], [-153.37, 55.8], [-153.25, 55.5], [-153.47, 54.97], [-153.82, 54.82], [-153.97, 54.47], [-154.5, 54.25], [-154.75, 54.35], [-154.82, 54.32], [-154.97, 53.97], [-155.5, 53.75], [-155.8, 53.88], [-155.97, 53.47], [-156.5, 53.25], [-156.75, 53.35], [-157.0, 53.25], [-157.25, 53.35], [-157.32, 53.32], [-157.47, 52.97], [-158.0, 52.75], [-158.53, 52.97], [-158.75, 53.5], [-158.53, 54.03], [-158.18, 54.18], [-158.03, 54.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.252018403603131}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.3876359514566823}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.436180094126144, 11.013417231929225, 10.31926395313161]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.87558263142904, 11.283441162109398, 11.00040969848635]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.1053568009982393, 2.812679843103286, 2.244871210268521]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.991267103636744, 4.252018403603131, 3.0105029561080983]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.360606292204382, 1.7562700372407807, 1.3754224277402087]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5311223308165864, 1.9674627472262716, 1.5393573800128617]}}