{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:39.987044", "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-Jan-16_to_2016-Jan-23_238.0_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": 2016010001845}, "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 16 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 23 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 126043.58033208524}, "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": ["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": 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": 238.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "238.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 236.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 241.75}, "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": 45.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.53, 38.03], [-123.0, 38.25], [-122.75, 38.15], [-122.5, 38.25], [-122.25, 38.15], [-122.0, 38.25], [-121.47, 38.03], [-121.32, 37.68], [-120.97, 37.53], [-120.75, 37.0], [-120.97, 36.47], [-121.5, 36.25], [-122.03, 36.47], [-122.18, 36.82], [-122.25, 36.85], [-122.32, 36.82], [-122.47, 36.47], [-123.0, 36.25], [-123.53, 36.47], [-123.75, 37.0], [-123.65, 37.25], [-123.75, 37.5], [-123.53, 38.03]]]]}, "2016-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-124.03, 39.53], [-123.5, 39.75], [-123.25, 39.65], [-123.0, 39.75], [-122.47, 39.53], [-122.32, 39.18], [-121.97, 39.03], [-121.82, 38.68], [-121.47, 38.53], [-121.25, 38.0], [-121.35, 37.75], [-121.32, 37.68], [-120.97, 37.53], [-120.75, 37.0], [-120.97, 36.47], [-121.5, 36.25], [-122.03, 36.47], [-122.18, 36.82], [-122.25, 36.85], [-122.32, 36.82], [-122.47, 36.47], [-123.0, 36.25], [-123.53, 36.47], [-123.75, 37.0], [-123.65, 37.25], [-123.75, 37.5], [-123.54, 38.0], [-123.68, 38.32], [-124.03, 38.47], [-124.25, 39.0], [-124.03, 39.53]]], [[[-121.53, 39.47], [-121.75, 40.0], [-121.53, 40.53], [-121.0, 40.75], [-120.47, 40.53], [-120.25, 40.0], [-120.47, 39.47], [-121.0, 39.25], [-121.53, 39.47]]]]}, "2016-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-124.25, 39.0], [-124.03, 39.53], [-123.5, 39.75], [-123.25, 39.65], [-123.0, 39.75], [-122.57, 39.57], [-122.75, 40.0], [-122.53, 40.53], [-122.12, 40.7], [-122.25, 41.0], [-122.03, 41.53], [-121.5, 41.75], [-121.25, 41.65], [-121.0, 41.75], [-120.47, 41.53], [-120.32, 41.18], [-120.25, 41.15], [-120.0, 41.25], [-119.47, 41.03], [-119.25, 40.5], [-119.47, 39.97], [-119.82, 39.82], [-119.97, 39.47], [-120.5, 39.25], [-120.75, 39.35], [-120.82, 39.32], [-120.85, 39.25], [-120.82, 39.18], [-120.47, 39.03], [-120.25, 38.5], [-120.35, 38.25], [-120.25, 38.0], [-120.35, 37.75], [-120.25, 37.5], [-120.47, 36.97], [-120.82, 36.82], [-120.97, 36.47], [-121.5, 36.25], [-122.03, 36.47], [-122.18, 36.82], [-122.25, 36.85], [-122.32, 36.82], [-122.47, 36.47], [-123.0, 36.25], [-123.53, 36.47], [-123.75, 37.0], [-123.65, 37.25], [-123.75, 37.5], [-123.54, 38.0], [-123.68, 38.32], [-124.03, 38.47], [-124.25, 39.0]], [[-122.2, 39.13], [-122.15, 39.25], [-122.18, 39.32], [-122.43, 39.43], [-122.32, 39.18], [-122.2, 39.13]]]]}, "2016-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-124.25, 39.0], [-124.03, 39.53], [-123.5, 39.75], [-123.25, 39.65], [-123.0, 39.75], [-122.57, 39.57], [-122.75, 40.0], [-122.53, 40.53], [-122.12, 40.7], [-122.25, 41.0], [-122.03, 41.53], [-121.5, 41.75], [-121.25, 41.65], [-121.0, 41.75], [-120.47, 41.53], [-120.32, 41.18], [-120.25, 41.15], [-120.0, 41.25], [-119.47, 41.03], [-119.25, 40.5], [-119.47, 39.97], [-119.82, 39.82], [-119.97, 39.47], [-120.5, 39.25], [-120.75, 39.35], [-120.82, 39.32], [-120.85, 39.25], [-120.82, 39.18], [-120.47, 39.03], [-120.25, 38.5], [-120.35, 38.25], [-120.25, 38.0], [-120.35, 37.75], [-120.25, 37.5], [-120.47, 36.97], [-120.82, 36.82], [-120.97, 36.47], [-121.5, 36.25], [-122.03, 36.47], [-122.18, 36.82], [-122.25, 36.85], [-122.32, 36.82], [-122.47, 36.47], [-123.0, 36.25], [-123.53, 36.47], [-123.75, 37.0], [-123.65, 37.25], [-123.75, 37.5], [-123.54, 38.0], [-123.68, 38.32], [-124.03, 38.47], [-124.25, 39.0]], [[-122.2, 39.13], [-122.15, 39.25], [-122.18, 39.32], [-122.43, 39.43], [-122.32, 39.18], [-122.2, 39.13]]]]}, "2016-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.75, 40.0], [-122.53, 40.53], [-122.12, 40.7], [-122.25, 41.0], [-122.03, 41.53], [-121.5, 41.75], [-121.25, 41.65], [-121.0, 41.75], [-120.47, 41.53], [-120.32, 41.18], [-120.25, 41.15], [-120.0, 41.25], [-119.75, 41.15], [-119.5, 41.25], [-118.97, 41.03], [-118.75, 40.5], [-118.97, 39.97], [-119.5, 39.75], [-119.75, 39.85], [-119.82, 39.82], [-119.85, 39.75], [-119.75, 39.5], [-119.97, 38.97], [-120.37, 38.8], [-120.25, 38.5], [-120.35, 38.25], [-120.25, 38.0], [-120.35, 37.75], [-120.25, 37.5], [-120.47, 36.97], [-121.0, 36.75], [-121.53, 36.97], [-121.75, 37.5], [-121.65, 37.75], [-121.75, 38.0], [-121.65, 38.25], [-121.68, 38.32], [-122.03, 38.47], [-122.25, 39.0], [-122.15, 39.25], [-122.18, 39.32], [-122.53, 39.47], [-122.75, 40.0]]]]}, "2016-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.53, 38.03], [-122.0, 38.25], [-121.47, 38.03], [-121.32, 37.68], [-120.97, 37.53], [-120.75, 37.0], [-120.97, 36.47], [-121.5, 36.25], [-122.03, 36.47], [-122.18, 36.82], [-122.53, 36.97], [-122.75, 37.5], [-122.53, 38.03]]], [[[-124.25, 42.5], [-124.03, 43.03], [-123.5, 43.25], [-123.25, 43.15], [-123.0, 43.25], [-122.5, 43.04], [-122.18, 43.18], [-122.03, 43.53], [-121.62, 43.7], [-121.68, 43.82], [-122.03, 43.97], [-122.25, 44.5], [-122.03, 45.03], [-121.68, 45.18], [-121.53, 45.53], [-121.0, 45.75], [-120.47, 45.53], [-120.25, 45.0], [-120.35, 44.75], [-120.25, 44.5], [-120.35, 44.25], [-120.32, 44.18], [-120.25, 44.15], [-120.0, 44.25], [-119.47, 44.03], [-119.32, 43.68], [-119.25, 43.65], [-119.0, 43.75], [-118.47, 43.53], [-118.32, 43.18], [-117.97, 43.03], [-117.75, 42.5], [-117.97, 41.97], [-118.5, 41.75], [-119.03, 41.97], [-119.18, 42.32], [-119.25, 42.35], [-119.37, 42.3], [-119.25, 42.0], [-119.47, 41.47], [-119.82, 41.32], [-119.87, 41.2], [-119.75, 41.15], [-119.5, 41.25], [-118.97, 41.03], [-118.75, 40.5], [-118.97, 39.97], [-119.5, 39.75], [-119.75, 39.85], [-119.87, 39.8], [-119.75, 39.5], [-119.97, 38.97], [-120.5, 38.75], [-121.03, 38.97], [-121.25, 39.5], [-121.12, 39.8], [-121.53, 39.97], [-121.68, 40.32], [-122.03, 40.47], [-122.2, 40.88], [-122.5, 40.75], [-123.03, 40.97], [-123.25, 41.5], [-123.15, 41.75], [-123.18, 41.82], [-123.25, 41.85], [-123.5, 41.75], [-124.03, 41.97], [-124.25, 42.5]]]]}, "2016-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.53, 38.03], [-122.0, 38.25], [-121.47, 38.03], [-121.32, 37.68], [-120.97, 37.53], [-120.75, 37.0], [-120.97, 36.47], [-121.5, 36.25], [-122.03, 36.47], [-122.18, 36.82], [-122.53, 36.97], [-122.75, 37.5], [-122.53, 38.03]]], [[[-124.25, 42.5], [-124.03, 43.03], [-123.5, 43.25], [-123.25, 43.15], [-123.0, 43.25], [-122.5, 43.04], [-122.18, 43.18], [-122.03, 43.53], [-121.62, 43.7], [-121.68, 43.82], [-122.03, 43.97], [-122.25, 44.5], [-122.03, 45.03], [-121.68, 45.18], [-121.53, 45.53], [-121.0, 45.75], [-120.47, 45.53], [-120.25, 45.0], [-120.35, 44.75], [-120.25, 44.5], [-120.35, 44.25], [-120.32, 44.18], [-120.25, 44.15], [-120.0, 44.25], [-119.47, 44.03], [-119.32, 43.68], [-119.25, 43.65], [-119.0, 43.75], [-118.47, 43.53], [-118.32, 43.18], [-117.97, 43.03], [-117.75, 42.5], [-117.97, 41.97], [-118.5, 41.75], [-119.03, 41.97], [-119.18, 42.32], [-119.25, 42.35], [-119.37, 42.3], [-119.25, 42.0], [-119.47, 41.47], [-119.82, 41.32], [-119.87, 41.2], [-119.75, 41.15], [-119.5, 41.25], [-118.97, 41.03], [-118.75, 40.5], [-118.97, 39.97], [-119.5, 39.75], [-119.75, 39.85], [-119.87, 39.8], [-119.75, 39.5], [-119.97, 38.97], [-120.5, 38.75], [-121.03, 38.97], [-121.25, 39.5], [-121.12, 39.8], [-121.53, 39.97], [-121.68, 40.32], [-122.03, 40.47], [-122.2, 40.88], [-122.5, 40.75], [-123.03, 40.97], [-123.25, 41.5], [-123.15, 41.75], [-123.18, 41.82], [-123.25, 41.85], [-123.5, 41.75], [-124.03, 41.97], [-124.25, 42.5]]]]}, "2016-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.53, 38.03], [-122.0, 38.25], [-121.47, 38.03], [-121.32, 37.68], [-120.97, 37.53], [-120.75, 37.0], [-120.97, 36.47], [-121.5, 36.25], [-122.03, 36.47], [-122.18, 36.82], [-122.53, 36.97], [-122.75, 37.5], [-122.53, 38.03]]], [[[-124.25, 42.5], [-124.03, 43.03], [-123.5, 43.25], [-123.25, 43.15], [-123.0, 43.25], [-122.5, 43.04], [-122.18, 43.18], [-122.03, 43.53], [-121.62, 43.7], [-121.68, 43.82], [-122.03, 43.97], [-122.25, 44.5], [-122.03, 45.03], [-121.68, 45.18], [-121.53, 45.53], [-121.0, 45.75], [-120.47, 45.53], [-120.25, 45.0], [-120.35, 44.75], [-120.25, 44.5], [-120.35, 44.25], [-120.32, 44.18], [-120.25, 44.15], [-120.0, 44.25], [-119.47, 44.03], [-119.32, 43.68], [-119.25, 43.65], [-119.0, 43.75], [-118.47, 43.53], [-118.32, 43.18], [-117.97, 43.03], [-117.75, 42.5], [-117.97, 41.97], [-118.5, 41.75], [-119.03, 41.97], [-119.18, 42.32], [-119.25, 42.35], [-119.37, 42.3], [-119.25, 42.0], [-119.47, 41.47], [-119.82, 41.32], [-119.87, 41.2], [-119.75, 41.15], [-119.5, 41.25], [-118.97, 41.03], [-118.75, 40.5], [-118.97, 39.97], [-119.5, 39.75], [-119.75, 39.85], [-120.0, 39.75], [-120.25, 39.85], [-120.5, 39.75], [-120.75, 39.85], [-121.0, 39.75], [-121.53, 39.97], [-121.68, 40.32], [-122.03, 40.47], [-122.2, 40.88], [-122.5, 40.75], [-123.03, 40.97], [-123.25, 41.5], [-123.15, 41.75], [-123.18, 41.82], [-123.25, 41.85], [-123.5, 41.75], [-124.03, 41.97], [-124.25, 42.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.561808878107968}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.377246035778981}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.11695279461685, 12.365516903444814, 10.468742446764338, 10.487045754386543, 7.511981442408398, 4.667302768658487, 6.083491112030401, 5.04368580996055]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.87197451086979, 14.054933804683117, 14.850329255181009, 14.089843424518904, 13.205529630743627, 12.406213172220816, 13.708177562727201, 12.647355165760587]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.435814530003756, 3.5095636698112997, 3.8539923449382862, 3.831575523319382, 4.05182750560978, 4.225618904607539, 5.682261505988371, 4.638183879975171]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.0517559129894494, 4.31575526831881, 5.38741231671554, 4.894103465169792, 5.536265864512018, 5.147778177498594, 7.561808878107968, 6.030264491156743]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3187249495228062, 1.6660733337149314, 1.6149942598734681, 1.6624116718030784, 1.4326723173759135, 1.42711336310546, 1.9289522061302098, 1.4855935512877787]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4532781536594828, 1.9944502560768662, 2.1368607804300668, 2.168257663608122, 1.6596224159502462, 2.1700068385325872, 3.0501558148319257, 1.8261215693057435]}}