{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:21.836661", "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": "2014-Sep-11_to_2014-Sep-19_235.0_45.0"}, "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": 2014090001926}, "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": "September 11 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 19 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 78652.01565907442}, "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": ["N.Pacific-Ocean", "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": ["North 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": 45.0}, "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": 235.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "235.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 232.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 236.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 42.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-126.18, 44.18], [-126.04, 44.5], [-126.25, 45.0], [-126.03, 45.53], [-125.5, 45.75], [-125.25, 45.65], [-125.18, 45.68], [-125.03, 46.03], [-124.5, 46.25], [-124.25, 46.15], [-124.0, 46.25], [-123.47, 46.03], [-123.25, 45.5], [-123.35, 45.25], [-123.25, 45.0], [-123.47, 44.47], [-124.0, 44.25], [-124.25, 44.35], [-124.5, 44.25], [-124.75, 44.35], [-124.87, 44.3], [-124.75, 44.0], [-124.85, 43.75], [-124.75, 43.5], [-124.85, 43.25], [-124.75, 43.0], [-124.97, 42.47], [-125.5, 42.25], [-125.75, 42.35], [-126.0, 42.25], [-126.53, 42.47], [-126.75, 43.0], [-126.65, 43.25], [-126.75, 43.5], [-126.53, 44.03], [-126.18, 44.18]]], [[[-124.53, 47.53], [-124.0, 47.75], [-123.47, 47.53], [-123.25, 47.0], [-123.47, 46.47], [-124.0, 46.25], [-124.53, 46.47], [-124.75, 47.0], [-124.53, 47.53]]]]}, "2014-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.0, 45.75], [-126.75, 45.65], [-126.5, 45.75], [-126.25, 45.65], [-126.18, 45.68], [-126.03, 46.03], [-125.68, 46.18], [-125.53, 46.53], [-125.0, 46.75], [-124.7, 46.63], [-124.65, 46.75], [-124.75, 47.0], [-124.53, 47.53], [-124.0, 47.75], [-123.47, 47.53], [-123.25, 47.0], [-123.35, 46.75], [-123.25, 46.5], [-123.35, 46.25], [-123.25, 46.0], [-123.35, 45.75], [-123.25, 45.5], [-123.35, 45.25], [-123.25, 45.0], [-123.47, 44.47], [-124.0, 44.25], [-124.25, 44.35], [-124.5, 44.25], [-124.75, 44.35], [-124.82, 44.32], [-124.85, 44.25], [-124.75, 44.0], [-124.85, 43.75], [-124.75, 43.5], [-124.85, 43.25], [-124.75, 43.0], [-124.97, 42.47], [-125.5, 42.25], [-125.75, 42.35], [-126.0, 42.25], [-126.25, 42.35], [-126.5, 42.25], [-127.03, 42.47], [-127.25, 43.0], [-127.15, 43.25], [-127.25, 43.5], [-127.15, 43.75], [-127.18, 43.82], [-127.25, 43.85], [-127.5, 43.75], [-128.03, 43.97], [-128.25, 44.5], [-128.03, 45.03], [-127.68, 45.18], [-127.53, 45.53], [-127.0, 45.75]]]]}, "2014-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.0, 45.75], [-126.75, 45.65], [-126.5, 45.75], [-126.25, 45.65], [-126.18, 45.68], [-126.03, 46.03], [-125.68, 46.18], [-125.53, 46.53], [-125.0, 46.75], [-124.7, 46.63], [-124.65, 46.75], [-124.75, 47.0], [-124.53, 47.53], [-124.0, 47.75], [-123.75, 47.65], [-123.5, 47.75], [-122.97, 47.53], [-122.75, 47.0], [-122.97, 46.47], [-123.32, 46.32], [-123.35, 46.25], [-123.25, 46.0], [-123.35, 45.75], [-123.25, 45.5], [-123.35, 45.25], [-123.25, 45.0], [-123.47, 44.47], [-124.0, 44.25], [-124.25, 44.35], [-124.5, 44.25], [-124.75, 44.35], [-124.82, 44.32], [-124.85, 44.25], [-124.75, 44.0], [-124.85, 43.75], [-124.75, 43.5], [-124.85, 43.25], [-124.75, 43.0], [-124.97, 42.47], [-125.5, 42.25], [-125.75, 42.35], [-126.0, 42.25], [-126.25, 42.35], [-126.5, 42.25], [-127.03, 42.47], [-127.25, 43.0], [-127.15, 43.25], [-127.25, 43.5], [-127.15, 43.75], [-127.18, 43.82], [-127.25, 43.85], [-127.5, 43.75], [-128.03, 43.97], [-128.25, 44.5], [-128.03, 45.03], [-127.68, 45.18], [-127.53, 45.53], [-127.0, 45.75]]]]}, "2014-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.75, 46.0], [-127.53, 46.53], [-127.18, 46.68], [-127.03, 47.03], [-126.5, 47.25], [-125.97, 47.03], [-125.82, 46.68], [-125.75, 46.65], [-125.5, 46.75], [-125.25, 46.65], [-125.0, 46.75], [-124.7, 46.63], [-124.65, 46.75], [-124.75, 47.0], [-124.53, 47.53], [-124.0, 47.75], [-123.75, 47.65], [-123.5, 47.75], [-122.97, 47.53], [-122.75, 47.0], [-122.97, 46.47], [-123.32, 46.32], [-123.35, 46.25], [-123.25, 46.0], [-123.35, 45.75], [-123.25, 45.5], [-123.35, 45.25], [-123.25, 45.0], [-123.47, 44.47], [-124.0, 44.25], [-124.5, 44.46], [-124.82, 44.32], [-124.85, 44.25], [-124.75, 44.0], [-124.85, 43.75], [-124.75, 43.5], [-124.97, 42.97], [-125.32, 42.82], [-125.47, 42.47], [-126.0, 42.25], [-126.25, 42.35], [-126.5, 42.25], [-127.03, 42.47], [-127.25, 43.0], [-127.15, 43.25], [-127.25, 43.5], [-127.15, 43.75], [-127.18, 43.82], [-127.25, 43.85], [-127.5, 43.75], [-128.03, 43.97], [-128.25, 44.5], [-128.03, 45.03], [-127.68, 45.18], [-127.54, 45.5], [-127.75, 46.0]]]]}, "2014-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.53, 46.53], [-127.18, 46.68], [-127.03, 47.03], [-126.5, 47.25], [-125.97, 47.03], [-125.82, 46.68], [-125.75, 46.65], [-125.5, 46.75], [-125.25, 46.65], [-125.0, 46.75], [-124.7, 46.63], [-124.65, 46.75], [-124.75, 47.0], [-124.53, 47.53], [-124.0, 47.75], [-123.75, 47.65], [-123.5, 47.75], [-122.97, 47.53], [-122.75, 47.0], [-122.97, 46.47], [-123.32, 46.32], [-123.46, 46.0], [-123.25, 45.5], [-123.35, 45.25], [-123.25, 45.0], [-123.47, 44.47], [-124.0, 44.25], [-124.5, 44.46], [-125.0, 44.25], [-125.25, 44.35], [-125.5, 44.25], [-126.0, 44.46], [-126.5, 44.25], [-126.75, 44.35], [-127.0, 44.25], [-127.53, 44.47], [-127.75, 45.0], [-127.54, 45.5], [-127.75, 46.0], [-127.53, 46.53]]]]}, "2014-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-126.5, 47.25], [-125.97, 47.03], [-125.82, 46.68], [-125.75, 46.65], [-125.5, 46.75], [-125.25, 46.65], [-125.0, 46.75], [-124.47, 46.53], [-124.25, 46.0], [-124.35, 45.75], [-124.25, 45.5], [-124.47, 44.97], [-125.0, 44.75], [-125.25, 44.85], [-125.5, 44.75], [-126.03, 44.97], [-126.18, 45.32], [-126.25, 45.35], [-126.5, 45.25], [-126.75, 45.35], [-127.0, 45.25], [-127.53, 45.47], [-127.75, 46.0], [-127.53, 46.53], [-127.18, 46.68], [-127.03, 47.03], [-126.5, 47.25]]]]}, "2014-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.53, 47.03], [-127.0, 47.25], [-126.75, 47.15], [-126.5, 47.25], [-125.97, 47.03], [-125.75, 46.5], [-125.97, 45.97], [-126.32, 45.82], [-126.47, 45.47], [-127.0, 45.25], [-127.53, 45.47], [-127.75, 46.0], [-127.65, 46.25], [-127.75, 46.5], [-127.53, 47.03]]]]}, "2014-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.53, 47.03], [-127.0, 47.25], [-126.75, 47.15], [-126.5, 47.25], [-125.97, 47.03], [-125.75, 46.5], [-125.97, 45.97], [-126.32, 45.82], [-126.47, 45.47], [-127.0, 45.25], [-127.53, 45.47], [-127.75, 46.0], [-127.65, 46.25], [-127.75, 46.5], [-127.53, 47.03]]]]}, "2014-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.53, 47.03], [-127.0, 47.25], [-126.75, 47.15], [-126.5, 47.25], [-125.97, 47.03], [-125.75, 46.5], [-125.97, 45.97], [-126.32, 45.82], [-126.47, 45.47], [-127.0, 45.25], [-127.53, 45.47], [-127.75, 46.0], [-127.65, 46.25], [-127.75, 46.5], [-127.53, 47.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.386345012527158}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9015557715619158}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.52457023851747, 18.147886431513086, 17.86052870195175, 17.838216405037656, 17.574551212800145, 17.37722646004073, 17.502382801185945, 17.526249765646128, 17.934513766173552]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.938403197418893, 18.848605876973863, 18.699797247768345, 18.852924661018903, 19.19630587668064, 17.632072602776304, 17.57774684557654, 17.57653455531829, 18.1443410050465]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7874609852023156, 2.1083404074950085, 1.9505623141218866, 1.8808164342219715, 1.954385447603436, 1.4131153420734037, 1.4643580991607716, 1.5121890287142037, 1.9198750053230544]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.3267498541806617, 3.119289925471776, 3.4290859973634156, 3.7211258664302136, 4.386345012527158, 1.534279692341272, 1.5354221356473658, 1.612536782144275, 1.9925641241984522]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4152441176026611, 1.8099328414119928, 1.6080108604818688, 1.6245112530488683, 1.5545873340332694, 1.3091932002400424, 1.2956004854043697, 1.3019578999226205, 1.627060411002106]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.622636376670393, 2.2998974143437554, 2.031327307550754, 2.169791007113733, 2.215632657084596, 1.4228698749031958, 1.3482449967582528, 1.3623556098638074, 1.7308981065654183]}}