{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:32.910687", "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-Apr-05_to_2019-Apr-10_255.5_38.0"}, "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": 2019040001302}, "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": "April 05 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 10 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 339821.2674788514}, "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": 38.0}, "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": 255.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.5\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": 265.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.03, 37.47], [-105.25, 38.0], [-105.03, 38.53], [-104.5, 38.75], [-103.97, 38.53], [-103.75, 38.0], [-103.97, 37.47], [-104.5, 37.25], [-105.03, 37.47]]], [[[-102.25, 40.65], [-102.0, 40.75], [-101.75, 40.65], [-101.5, 40.75], [-100.97, 40.53], [-100.75, 40.0], [-100.97, 39.47], [-101.32, 39.32], [-101.47, 38.97], [-102.0, 38.75], [-102.25, 38.85], [-102.5, 38.75], [-103.03, 38.97], [-103.25, 39.5], [-103.15, 39.75], [-103.25, 40.0], [-103.03, 40.53], [-102.5, 40.75], [-102.25, 40.65]]], [[[-105.53, 41.03], [-105.0, 41.25], [-104.75, 41.15], [-104.5, 41.25], [-103.97, 41.03], [-103.75, 40.5], [-103.97, 39.97], [-104.5, 39.75], [-104.75, 39.85], [-105.0, 39.75], [-105.53, 39.97], [-105.75, 40.5], [-105.53, 41.03]]]]}, "2019-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 39.03], [-105.0, 39.25], [-104.75, 39.15], [-104.5, 39.25], [-103.97, 39.03], [-103.75, 38.5], [-103.85, 38.25], [-103.75, 38.0], [-103.97, 37.47], [-104.5, 37.25], [-105.03, 37.47], [-105.18, 37.82], [-105.53, 37.97], [-105.75, 38.5], [-105.53, 39.03]]], [[[-105.75, 40.5], [-105.53, 41.03], [-105.0, 41.25], [-104.75, 41.15], [-104.5, 41.25], [-104.25, 41.15], [-104.18, 41.18], [-104.04, 41.5], [-104.25, 42.0], [-104.03, 42.53], [-103.5, 42.75], [-103.25, 42.65], [-103.0, 42.75], [-102.75, 42.65], [-102.5, 42.75], [-102.25, 42.65], [-102.18, 42.68], [-102.03, 43.03], [-101.5, 43.25], [-100.97, 43.03], [-100.8, 42.62], [-100.68, 42.68], [-100.53, 43.03], [-100.18, 43.18], [-100.03, 43.53], [-99.68, 43.68], [-99.65, 43.75], [-99.75, 44.0], [-99.53, 44.53], [-99.12, 44.7], [-99.25, 45.0], [-99.03, 45.53], [-98.5, 45.75], [-98.25, 45.65], [-98.0, 45.75], [-97.75, 45.65], [-97.5, 45.75], [-96.97, 45.53], [-96.82, 45.18], [-96.75, 45.15], [-96.5, 45.25], [-96.25, 45.15], [-96.0, 45.25], [-95.75, 45.15], [-95.5, 45.25], [-94.97, 45.03], [-94.82, 44.68], [-94.47, 44.53], [-94.32, 44.18], [-93.97, 44.03], [-93.75, 43.5], [-93.85, 43.25], [-93.75, 43.0], [-93.97, 42.47], [-94.32, 42.32], [-94.47, 41.97], [-94.82, 41.82], [-94.85, 41.75], [-94.75, 41.5], [-94.97, 40.97], [-95.32, 40.82], [-95.47, 40.47], [-96.0, 40.25], [-96.25, 40.35], [-96.32, 40.32], [-96.47, 39.97], [-97.0, 39.75], [-97.25, 39.85], [-97.5, 39.75], [-97.75, 39.85], [-98.0, 39.75], [-98.25, 39.85], [-98.5, 39.75], [-98.75, 39.85], [-98.82, 39.82], [-98.97, 39.47], [-99.32, 39.32], [-99.47, 38.97], [-100.0, 38.75], [-100.25, 38.85], [-100.5, 38.75], [-100.75, 38.85], [-101.0, 38.75], [-101.25, 38.85], [-101.5, 38.75], [-101.75, 38.85], [-101.87, 38.8], [-101.75, 38.5], [-101.97, 37.97], [-102.5, 37.75], [-103.03, 37.97], [-103.25, 38.5], [-103.04, 39.0], [-103.18, 39.32], [-103.25, 39.35], [-103.5, 39.25], [-104.03, 39.47], [-104.18, 39.82], [-104.25, 39.85], [-104.5, 39.75], [-104.75, 39.85], [-105.0, 39.75], [-105.53, 39.97], [-105.75, 40.5]]]]}, "2019-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.0, 39.25], [-104.75, 39.15], [-104.5, 39.25], [-103.97, 39.03], [-103.75, 38.5], [-103.85, 38.25], [-103.75, 38.0], [-103.85, 37.75], [-103.75, 37.5], [-103.97, 36.97], [-104.5, 36.75], [-105.03, 36.97], [-105.18, 37.32], [-105.53, 37.47], [-105.75, 38.0], [-105.65, 38.25], [-105.75, 38.5], [-105.53, 39.03], [-105.0, 39.25]]], [[[-105.75, 40.5], [-105.53, 41.03], [-105.0, 41.25], [-104.75, 41.15], [-104.5, 41.25], [-104.25, 41.15], [-104.18, 41.18], [-104.12, 41.3], [-104.53, 41.47], [-104.75, 42.0], [-104.53, 42.53], [-104.0, 42.75], [-103.75, 42.65], [-103.5, 42.75], [-103.25, 42.65], [-103.0, 42.75], [-102.75, 42.65], [-102.5, 42.75], [-102.25, 42.65], [-102.18, 42.68], [-102.03, 43.03], [-101.5, 43.25], [-100.97, 43.03], [-100.8, 42.62], [-100.68, 42.68], [-100.53, 43.03], [-100.18, 43.18], [-100.03, 43.53], [-99.68, 43.68], [-99.65, 43.75], [-99.75, 44.0], [-99.53, 44.53], [-99.12, 44.7], [-99.25, 45.0], [-99.03, 45.53], [-98.5, 45.75], [-98.25, 45.65], [-98.0, 45.75], [-97.75, 45.65], [-97.5, 45.75], [-96.97, 45.53], [-96.82, 45.18], [-96.75, 45.15], [-96.5, 45.25], [-96.25, 45.15], [-96.0, 45.25], [-95.75, 45.15], [-95.5, 45.25], [-94.97, 45.03], [-94.82, 44.68], [-94.47, 44.53], [-94.32, 44.18], [-93.97, 44.03], [-93.75, 43.5], [-93.85, 43.25], [-93.75, 43.0], [-93.97, 42.47], [-94.32, 42.32], [-94.47, 41.97], [-94.82, 41.82], [-94.85, 41.75], [-94.75, 41.5], [-94.97, 40.97], [-95.32, 40.82], [-95.47, 40.47], [-96.0, 40.25], [-96.25, 40.35], [-96.32, 40.32], [-96.47, 39.97], [-97.0, 39.75], [-97.25, 39.85], [-97.5, 39.75], [-97.75, 39.85], [-98.0, 39.75], [-98.25, 39.85], [-98.5, 39.75], [-98.75, 39.85], [-98.82, 39.82], [-98.97, 39.47], [-99.32, 39.32], [-99.47, 38.97], [-100.0, 38.75], [-100.25, 38.85], [-100.5, 38.75], [-100.75, 38.85], [-101.0, 38.75], [-101.25, 38.85], [-101.5, 38.75], [-101.75, 38.85], [-101.87, 38.8], [-101.75, 38.5], [-101.97, 37.97], [-102.5, 37.75], [-103.03, 37.97], [-103.25, 38.5], [-103.04, 39.0], [-103.18, 39.32], [-103.25, 39.35], [-103.5, 39.25], [-104.03, 39.47], [-104.18, 39.82], [-104.25, 39.85], [-104.5, 39.75], [-104.75, 39.85], [-105.0, 39.75], [-105.53, 39.97], [-105.75, 40.5]]]]}, "2019-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 39.03], [-105.0, 39.25], [-104.75, 39.15], [-104.5, 39.25], [-104.0, 39.04], [-103.5, 39.25], [-104.03, 39.47], [-104.18, 39.82], [-104.25, 39.85], [-104.5, 39.75], [-104.75, 39.85], [-105.0, 39.75], [-105.53, 39.97], [-105.75, 40.5], [-105.53, 41.03], [-105.0, 41.25], [-104.75, 41.15], [-104.5, 41.25], [-104.25, 41.15], [-104.18, 41.18], [-104.12, 41.3], [-104.53, 41.47], [-104.75, 42.0], [-104.53, 42.53], [-104.0, 42.75], [-103.75, 42.65], [-103.5, 42.75], [-103.25, 42.65], [-103.0, 42.75], [-102.75, 42.65], [-102.5, 42.75], [-102.25, 42.65], [-102.18, 42.68], [-102.03, 43.03], [-101.5, 43.25], [-100.97, 43.03], [-100.8, 42.62], [-100.68, 42.68], [-100.53, 43.03], [-100.18, 43.18], [-100.03, 43.53], [-99.68, 43.68], [-99.65, 43.75], [-99.75, 44.0], [-99.53, 44.53], [-99.12, 44.7], [-99.25, 45.0], [-99.03, 45.53], [-98.5, 45.75], [-98.25, 45.65], [-98.0, 45.75], [-97.75, 45.65], [-97.5, 45.75], [-96.97, 45.53], [-96.82, 45.18], [-96.75, 45.15], [-96.5, 45.25], [-96.25, 45.15], [-96.0, 45.25], [-95.75, 45.15], [-95.5, 45.25], [-94.97, 45.03], [-94.82, 44.68], [-94.47, 44.53], [-94.32, 44.18], [-93.97, 44.03], [-93.75, 43.5], [-93.85, 43.25], [-93.75, 43.0], [-93.97, 42.47], [-94.32, 42.32], [-94.47, 41.97], [-94.82, 41.82], [-94.85, 41.75], [-94.75, 41.5], [-94.97, 40.97], [-95.32, 40.82], [-95.47, 40.47], [-96.0, 40.25], [-96.25, 40.35], [-96.32, 40.32], [-96.47, 39.97], [-97.0, 39.75], [-97.25, 39.85], [-97.5, 39.75], [-97.75, 39.85], [-97.82, 39.82], [-97.97, 39.47], [-98.5, 39.25], [-98.75, 39.35], [-99.0, 39.25], [-99.25, 39.35], [-99.32, 39.32], [-99.47, 38.97], [-100.0, 38.75], [-100.25, 38.85], [-100.5, 38.75], [-100.75, 38.85], [-100.82, 38.82], [-100.97, 38.47], [-101.5, 38.25], [-101.75, 38.35], [-101.82, 38.32], [-101.97, 37.97], [-102.5, 37.75], [-102.75, 37.85], [-102.82, 37.82], [-102.97, 37.47], [-103.32, 37.32], [-103.47, 36.97], [-104.0, 36.75], [-104.25, 36.85], [-104.5, 36.75], [-105.03, 36.97], [-105.18, 37.32], [-105.53, 37.47], [-105.75, 38.0], [-105.65, 38.25], [-105.75, 38.5], [-105.53, 39.03]], [[-103.25, 39.15], [-103.18, 39.18], [-103.15, 39.25], [-103.18, 39.32], [-103.25, 39.35], [-103.5, 39.25], [-103.25, 39.15]]]]}, "2019-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 39.03], [-105.0, 39.25], [-104.75, 39.15], [-104.5, 39.25], [-104.0, 39.04], [-103.5, 39.25], [-104.03, 39.47], [-104.18, 39.82], [-104.25, 39.85], [-104.5, 39.75], [-104.75, 39.85], [-105.0, 39.75], [-105.53, 39.97], [-105.75, 40.5], [-105.53, 41.03], [-105.0, 41.25], [-104.75, 41.15], [-104.5, 41.25], [-104.25, 41.15], [-104.18, 41.18], [-104.12, 41.3], [-104.53, 41.47], [-104.75, 42.0], [-104.53, 42.53], [-104.0, 42.75], [-103.75, 42.65], [-103.5, 42.75], [-103.25, 42.65], [-103.0, 42.75], [-102.75, 42.65], [-102.5, 42.75], [-102.25, 42.65], [-102.0, 42.75], [-101.47, 42.53], [-101.25, 42.0], [-101.35, 41.75], [-101.32, 41.68], [-100.97, 41.53], [-100.82, 41.18], [-100.47, 41.03], [-100.25, 40.5], [-100.35, 40.25], [-100.32, 40.18], [-100.25, 40.15], [-100.0, 40.25], [-99.7, 40.12], [-99.65, 40.25], [-99.68, 40.32], [-100.03, 40.47], [-100.25, 41.0], [-100.03, 41.53], [-99.68, 41.68], [-99.53, 42.03], [-99.0, 42.25], [-98.47, 42.03], [-98.32, 41.68], [-98.25, 41.65], [-98.0, 41.75], [-97.47, 41.53], [-97.32, 41.18], [-97.25, 41.15], [-97.0, 41.25], [-96.47, 41.03], [-96.25, 40.5], [-96.47, 39.97], [-97.0, 39.75], [-97.25, 39.85], [-97.5, 39.75], [-97.75, 39.85], [-97.82, 39.82], [-97.97, 39.47], [-98.5, 39.25], [-98.75, 39.35], [-99.0, 39.25], [-99.3, 39.38], [-99.47, 38.97], [-100.0, 38.75], [-100.25, 38.85], [-100.5, 38.75], [-100.75, 38.85], [-100.82, 38.82], [-100.97, 38.47], [-101.5, 38.25], [-101.75, 38.35], [-101.82, 38.32], [-101.97, 37.97], [-102.5, 37.75], [-102.75, 37.85], [-102.82, 37.82], [-102.97, 37.47], [-103.32, 37.32], [-103.47, 36.97], [-104.0, 36.75], [-104.25, 36.85], [-104.5, 36.75], [-105.03, 36.97], [-105.18, 37.32], [-105.53, 37.47], [-105.75, 38.0], [-105.65, 38.25], [-105.75, 38.5], [-105.53, 39.03]], [[-103.25, 39.15], [-103.18, 39.18], [-103.15, 39.25], [-103.18, 39.32], [-103.25, 39.35], [-103.5, 39.25], [-103.25, 39.15]]]]}, "2019-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.5, 38.75], [-104.25, 38.65], [-104.18, 38.68], [-104.03, 39.03], [-103.5, 39.25], [-103.25, 39.15], [-103.18, 39.18], [-103.03, 39.53], [-102.5, 39.75], [-102.25, 39.65], [-102.0, 39.75], [-101.75, 39.65], [-101.5, 39.75], [-100.97, 39.53], [-100.75, 39.0], [-100.97, 38.47], [-101.5, 38.25], [-101.75, 38.35], [-101.82, 38.32], [-101.97, 37.97], [-102.5, 37.75], [-102.75, 37.85], [-102.82, 37.82], [-102.97, 37.47], [-103.32, 37.32], [-103.47, 36.97], [-104.0, 36.75], [-104.25, 36.85], [-104.5, 36.75], [-105.03, 36.97], [-105.25, 37.5], [-105.15, 37.75], [-105.25, 38.0], [-105.03, 38.53], [-104.5, 38.75]]], [[[-98.75, 40.65], [-98.5, 40.75], [-97.97, 40.53], [-97.75, 40.0], [-97.97, 39.47], [-98.5, 39.25], [-98.75, 39.35], [-99.0, 39.25], [-99.3, 39.38], [-99.47, 38.97], [-100.0, 38.75], [-100.53, 38.97], [-100.75, 39.5], [-100.53, 40.03], [-100.0, 40.25], [-99.7, 40.12], [-99.53, 40.53], [-99.0, 40.75], [-98.75, 40.65]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.958687422034188}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.916038281679437}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.893605324460452, 15.480549490830526, 15.238353590414363, 15.70272591854473, 16.88887140143612, 17.66249042129698]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.61730817019128, 18.998518926310965, 16.81278471527105, 18.170828305265047, 19.376336071674984, 19.29524398473933]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.3742068551289535, 8.167966667836033, 7.801728528917362, 7.877644303981691, 7.989974169167001, 7.590641515118368]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.794385324550888, 9.86195584604161, 8.994979750105017, 9.600272942353513, 9.958687422034188, 8.952151774549407]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2889957081202728, 1.5115752102018856, 1.4308600124114559, 1.417790694704849, 1.3972216353021778, 1.3547635606664932]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3358711918210475, 1.9042725153272508, 1.6116989201688054, 1.688192343521535, 1.690142476037191, 1.514518459212952]}}