{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:46.570870", "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": "2017-Dec-19_to_2017-Dec-21_263.5_36.5"}, "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": 2017120002179}, "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": "December 19 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 21 2017"}, "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": 195872.53519035253}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": 36.5}, "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": 263.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "263.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 260.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 268.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.53, 36.53], [-99.18, 36.68], [-99.15, 36.75], [-99.25, 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34.25], [-96.75, 34.35], [-97.0, 34.25], [-97.25, 34.35], [-97.5, 34.25], [-97.75, 34.35], [-98.0, 34.25], [-98.53, 34.47], [-98.68, 34.82], [-98.75, 34.85], [-99.0, 34.75], [-99.53, 34.97], [-99.75, 35.5], [-99.65, 35.75], [-99.75, 36.0], [-99.53, 36.53]]]]}, "2017-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.53, 36.53], [-99.18, 36.68], [-99.15, 36.75], [-99.25, 37.0], [-99.15, 37.25], [-99.25, 37.5], [-99.03, 38.03], [-98.68, 38.18], [-98.53, 38.53], [-98.0, 38.75], [-97.75, 38.65], [-97.5, 38.75], [-97.25, 38.65], [-97.0, 38.75], [-96.75, 38.65], [-96.5, 38.75], [-96.25, 38.65], [-96.0, 38.75], [-95.75, 38.65], [-95.5, 38.75], [-94.97, 38.53], [-94.82, 38.18], [-94.75, 38.15], [-94.68, 38.18], [-94.53, 38.53], [-94.0, 38.75], [-93.75, 38.65], [-93.5, 38.75], [-93.25, 38.65], [-93.0, 38.75], [-92.47, 38.53], [-92.32, 38.18], [-92.25, 38.15], [-92.0, 38.25], [-91.75, 38.15], [-91.5, 38.25], [-90.97, 38.03], [-90.75, 37.5], [-90.85, 37.25], [-90.75, 37.0], [-90.97, 36.47], [-91.32, 36.32], [-91.47, 35.97], [-92.0, 35.75], [-92.25, 35.85], [-92.32, 35.82], [-92.47, 35.47], [-93.0, 35.25], [-93.25, 35.35], [-93.5, 35.25], [-94.03, 35.47], [-94.18, 35.82], [-94.25, 35.85], [-94.32, 35.82], [-94.35, 35.75], [-94.25, 35.5], [-94.47, 34.97], [-94.82, 34.82], [-94.97, 34.47], [-95.5, 34.25], [-95.75, 34.35], [-96.0, 34.25], [-96.25, 34.35], [-96.5, 34.25], [-96.75, 34.35], [-97.0, 34.25], [-97.25, 34.35], [-97.5, 34.25], [-97.75, 34.35], [-98.0, 34.25], [-98.53, 34.47], [-98.68, 34.82], [-98.75, 34.85], [-99.0, 34.75], [-99.53, 34.97], [-99.75, 35.5], [-99.65, 35.75], [-99.75, 36.0], [-99.53, 36.53]]]]}, "2017-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.53, 36.53], [-99.18, 36.68], [-99.15, 36.75], [-99.25, 37.0], [-99.15, 37.25], [-99.25, 37.5], [-99.03, 38.03], [-98.68, 38.18], [-98.53, 38.53], [-98.0, 38.75], [-97.75, 38.65], [-97.5, 38.75], [-97.25, 38.65], [-97.0, 38.75], [-96.75, 38.65], [-96.5, 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35.5], [-99.65, 35.75], [-99.75, 36.0], [-99.53, 36.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.396393655695817}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.123865984751035}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.627075168451825, 9.957756812079765, 11.105553627614256]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.682798103612356, 12.881993115752095, 14.13237807675938]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.3034876888941085, 6.842948537599522, 8.225161727759478]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.236539136147769, 7.988513890036927, 10.396393655695817]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3170045836655166, 1.3992523428605328, 1.6386703949277646]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5751909701356959, 1.679713839753613, 1.9382245042750117]}}