{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:57.534353", "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": "2019-Jan-04_to_2019-Jan-07_257.0_42.0"}, "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": 2019010001506}, "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": "January 04 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 07 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 72805.15821473824}, "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": 42.0}, "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": 257.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "257.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 254.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 258.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.25, 39.0], [-105.03, 39.53], [-104.5, 39.75], [-104.25, 39.65], [-104.0, 39.75], [-103.47, 39.53], [-103.25, 39.0], [-103.47, 38.47], [-104.0, 38.25], [-104.25, 38.35], [-104.5, 38.25], [-105.03, 38.47], [-105.25, 39.0]]], [[[-105.18, 41.68], [-105.03, 42.03], [-104.68, 42.18], [-104.53, 42.53], [-104.18, 42.68], [-104.03, 43.03], [-103.5, 43.25], [-103.25, 43.15], [-103.0, 43.25], [-102.75, 43.15], [-102.5, 43.25], [-101.97, 43.03], [-101.75, 42.5], [-101.85, 42.25], [-101.75, 42.0], [-101.97, 41.47], [-102.5, 41.25], [-102.75, 41.35], [-103.0, 41.25], [-103.25, 41.35], [-103.32, 41.32], [-103.47, 40.97], [-103.82, 40.82], [-103.97, 40.47], [-104.32, 40.32], [-104.47, 39.97], [-105.0, 39.75], [-105.53, 39.97], [-105.75, 40.5], [-105.65, 40.75], [-105.75, 41.0], [-105.53, 41.53], [-105.18, 41.68]]]]}, "2019-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 41.53], [-105.18, 41.68], [-105.03, 42.03], [-104.68, 42.18], [-104.53, 42.53], [-104.18, 42.68], [-104.03, 43.03], [-103.68, 43.18], [-103.53, 43.53], [-103.0, 43.75], [-102.75, 43.65], [-102.5, 43.75], [-101.97, 43.53], [-101.75, 43.0], [-101.85, 42.75], [-101.75, 42.5], [-101.85, 42.25], [-101.75, 42.0], [-101.97, 41.47], [-102.5, 41.25], [-102.75, 41.35], [-103.0, 41.25], [-102.47, 41.03], [-102.25, 40.5], [-102.47, 39.97], [-102.82, 39.82], [-102.96, 39.5], [-102.82, 39.18], [-102.75, 39.15], [-102.5, 39.25], [-102.25, 39.15], [-102.0, 39.25], [-101.47, 39.03], [-101.25, 38.5], [-101.47, 37.97], [-102.0, 37.75], [-102.25, 37.85], [-102.5, 37.75], [-102.75, 37.85], [-103.0, 37.75], [-103.25, 37.85], [-103.5, 37.75], [-103.75, 37.85], [-104.0, 37.75], [-104.25, 37.85], [-104.5, 37.75], [-105.03, 37.97], [-105.25, 38.5], [-105.15, 38.75], [-105.25, 39.0], [-105.04, 39.5], [-105.18, 39.82], [-105.53, 39.97], [-105.75, 40.5], [-105.65, 40.75], [-105.75, 41.0], [-105.53, 41.53]], [[-103.25, 41.35], [-103.32, 41.32], [-103.37, 41.2], [-103.25, 41.15], [-103.0, 41.25], [-103.25, 41.35]]]]}, "2019-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 41.53], [-105.18, 41.68], [-105.03, 42.03], [-104.68, 42.18], [-104.53, 42.53], [-104.18, 42.68], [-104.03, 43.03], [-103.68, 43.18], [-103.53, 43.53], [-103.0, 43.75], [-102.75, 43.65], [-102.5, 43.75], [-101.97, 43.53], [-101.75, 43.0], [-101.85, 42.75], [-101.75, 42.5], [-101.85, 42.25], [-101.75, 42.0], [-101.97, 41.47], [-102.5, 41.25], [-102.75, 41.35], [-103.0, 41.25], [-102.47, 41.03], [-102.25, 40.5], [-102.47, 39.97], [-102.82, 39.82], [-102.96, 39.5], [-102.82, 39.18], [-102.75, 39.15], [-102.5, 39.25], [-102.25, 39.15], [-102.0, 39.25], [-101.47, 39.03], [-101.25, 38.5], [-101.47, 37.97], [-102.0, 37.75], [-102.25, 37.85], [-102.5, 37.75], [-102.75, 37.85], [-103.0, 37.75], [-103.25, 37.85], [-103.5, 37.75], [-103.75, 37.85], [-104.0, 37.75], [-104.25, 37.85], [-104.5, 37.75], [-105.03, 37.97], [-105.25, 38.5], [-105.15, 38.75], [-105.25, 39.0], [-105.04, 39.5], [-105.18, 39.82], [-105.53, 39.97], [-105.75, 40.5], [-105.65, 40.75], [-105.75, 41.0], [-105.53, 41.53]], [[-103.25, 41.35], [-103.32, 41.32], [-103.37, 41.2], [-103.25, 41.15], [-103.0, 41.25], [-103.25, 41.35]]]]}, "2019-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.5, 41.25], [-104.25, 41.15], [-104.0, 41.25], [-103.75, 41.15], [-103.5, 41.25], [-103.25, 41.15], [-103.0, 41.25], [-102.47, 41.03], [-102.25, 40.5], [-102.47, 39.97], [-102.82, 39.82], [-102.96, 39.5], [-102.82, 39.18], [-102.75, 39.15], [-102.5, 39.25], [-102.25, 39.15], [-102.0, 39.25], [-101.47, 39.03], [-101.25, 38.5], [-101.47, 37.97], [-102.0, 37.75], [-102.25, 37.85], [-102.5, 37.75], [-102.75, 37.85], [-103.0, 37.75], [-103.25, 37.85], [-103.5, 37.75], [-103.75, 37.85], [-104.0, 37.75], [-104.25, 37.85], [-104.5, 37.75], [-105.03, 37.97], [-105.25, 38.5], [-105.03, 39.03], [-104.62, 39.2], [-104.68, 39.32], [-105.03, 39.47], [-105.25, 40.0], [-105.15, 40.25], [-105.25, 40.5], [-105.03, 41.03], [-104.5, 41.25]]], [[[-103.54, 42.5], [-103.75, 43.0], [-103.53, 43.53], [-103.0, 43.75], [-102.75, 43.65], [-102.5, 43.75], [-101.97, 43.53], [-101.75, 43.0], [-101.85, 42.75], [-101.75, 42.5], [-101.85, 42.25], [-101.75, 42.0], [-101.97, 41.47], [-102.5, 41.25], [-102.75, 41.35], [-103.0, 41.25], [-103.53, 41.47], [-103.75, 42.0], [-103.54, 42.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.561197161719349}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.9101117605260205}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.85859152821746, 5.826506126083132, 5.821587739893971, 5.290129138257498]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.588716765268259, 7.691005204045837, 7.361519010979293, 7.210127995130904]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.172318725852222, 8.2268011491035, 7.96902561655181, 7.144381855662604]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.056986261895076, 9.561197161719349, 9.554357427980335, 8.302743007407344]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2909413213121845, 1.4350526727248727, 1.4410283614151285, 1.2813571118006957]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4221373785365703, 1.872131668369999, 1.8530366020647162, 1.524193040646906]}}