{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:58.022581", "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": "2016-Dec-21_to_2016-Dec-25_253.0_37.5"}, "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": 2016120002368}, "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 21 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 25 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 60414.048793023096}, "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": ["W.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": 37.5}, "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": 253.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "253.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 251.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 254.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.0, 38.25], [-106.47, 38.03], [-106.25, 37.5], [-106.47, 36.97], [-107.0, 36.75], [-107.53, 36.97], [-107.75, 37.5], [-107.53, 38.03], [-107.0, 38.25]]]]}, "2016-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.25, 37.5], [-109.03, 38.03], [-108.68, 38.18], [-108.53, 38.53], [-108.0, 38.75], [-107.75, 38.65], [-107.5, 38.75], [-107.25, 38.65], [-107.0, 38.75], [-106.47, 38.53], [-106.32, 38.18], [-105.97, 38.03], [-105.75, 37.5], [-105.85, 37.25], [-105.75, 37.0], [-105.97, 36.47], [-106.5, 36.25], [-106.75, 36.35], [-107.0, 36.25], [-107.25, 36.35], [-107.5, 36.25], [-107.75, 36.35], [-108.0, 36.25], [-108.53, 36.47], [-108.68, 36.82], [-109.03, 36.97], [-109.25, 37.5]]]]}, "2016-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 40.03], [-108.68, 40.18], [-108.53, 40.53], [-108.18, 40.68], [-108.03, 41.03], [-107.5, 41.25], [-107.25, 41.15], [-107.0, 41.25], [-106.75, 41.15], [-106.5, 41.25], [-105.97, 41.03], [-105.82, 40.68], [-105.47, 40.53], [-105.25, 40.0], [-105.47, 39.47], [-106.0, 39.25], [-106.3, 39.38], [-106.46, 39.0], [-106.25, 38.5], [-106.35, 38.25], [-106.32, 38.18], [-105.97, 38.03], [-105.75, 37.5], [-105.85, 37.25], [-105.75, 37.0], [-105.97, 36.47], [-106.5, 36.25], [-106.75, 36.35], [-107.0, 36.25], [-107.25, 36.35], [-107.5, 36.25], [-107.75, 36.35], [-108.0, 36.25], [-108.53, 36.47], [-108.68, 36.82], [-109.03, 36.97], [-109.25, 37.5], [-109.03, 38.03], [-108.68, 38.18], [-108.62, 38.3], [-109.03, 38.47], [-109.25, 39.0], [-109.15, 39.25], [-109.25, 39.5], [-109.03, 40.03]]]]}, "2016-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 40.03], [-108.68, 40.18], [-108.53, 40.53], [-108.18, 40.68], [-108.03, 41.03], [-107.5, 41.25], [-107.25, 41.15], [-107.0, 41.25], [-106.75, 41.15], [-106.5, 41.25], [-105.97, 41.03], [-105.82, 40.68], [-105.47, 40.53], [-105.25, 40.0], [-105.47, 39.47], [-106.0, 39.25], [-106.3, 39.38], [-106.46, 39.0], [-106.25, 38.5], [-106.35, 38.25], [-106.32, 38.18], [-105.97, 38.03], [-105.75, 37.5], [-105.85, 37.25], [-105.75, 37.0], [-105.97, 36.47], [-106.5, 36.25], [-106.75, 36.35], [-107.0, 36.25], [-107.25, 36.35], [-107.5, 36.25], [-107.75, 36.35], [-108.0, 36.25], [-108.53, 36.47], [-108.68, 36.82], [-109.03, 36.97], [-109.25, 37.5], [-109.03, 38.03], [-108.68, 38.18], [-108.62, 38.3], [-109.03, 38.47], [-109.25, 39.0], [-109.15, 39.25], [-109.25, 39.5], [-109.03, 40.03]]]]}, "2016-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 40.03], [-108.68, 40.18], [-108.53, 40.53], [-108.18, 40.68], [-108.03, 41.03], [-107.5, 41.25], [-107.25, 41.15], [-107.0, 41.25], [-106.75, 41.15], [-106.5, 41.25], [-105.97, 41.03], [-105.82, 40.68], [-105.47, 40.53], [-105.25, 40.0], [-105.47, 39.47], [-106.0, 39.25], [-106.3, 39.38], [-106.46, 39.0], [-106.25, 38.5], [-106.47, 37.97], [-107.0, 37.75], [-107.25, 37.85], [-107.5, 37.75], [-108.03, 37.97], [-108.18, 38.32], [-108.25, 38.35], [-108.5, 38.25], [-109.03, 38.47], [-109.25, 39.0], [-109.15, 39.25], [-109.25, 39.5], [-109.03, 40.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.067214789435639}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.953625633928147}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-4.724827910695694, -2.378086095159915, -1.393914088830627, -1.8599903514941047, -2.4121395275831787]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-4.724827910695694, 1.391229007521872, 0.9773437798502869, 2.050319676066522, 0.48444042521606434]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.567969569763534, 6.228735083913132, 7.429656594031096, 7.103881890403502, 6.524945806996391]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.567969569763534, 6.827377466179655, 8.731093244117744, 10.067214789435639, 7.369033365563439]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3777524174726201, 1.5112389856708814, 1.7614223159267126, 1.6875275576158826, 1.5339724698843762]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3777524174726201, 1.663490778970097, 2.1169200235760237, 2.0758004218023163, 1.731792939920109]}}