{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:19.536968", "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-Apr-25_to_2016-May-03_277.5_29.5"}, "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": 2016040002140}, "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 25 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2016"}, "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": 327022.9798866568}, "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": ["E.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": ["Gulf of Mexico", "North Atlantic 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": 29.5}, "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": 277.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "277.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 273.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 280.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.15, 35.75], [-87.25, 36.0], [-87.03, 36.53], [-86.5, 36.75], [-86.0, 36.54], [-85.5, 36.75], [-85.25, 36.65], [-85.0, 36.75], [-84.75, 36.65], [-84.5, 36.75], [-84.25, 36.65], [-84.0, 36.75], [-83.47, 36.53], [-83.25, 36.0], [-83.47, 35.47], [-84.0, 35.25], [-84.25, 35.35], [-84.32, 35.32], [-84.47, 34.97], [-85.0, 34.75], [-85.5, 34.96], [-85.82, 34.82], [-85.97, 34.47], [-86.5, 34.25], [-87.03, 34.47], [-87.25, 35.0], [-87.15, 35.25], [-87.25, 35.5], [-87.15, 35.75]]]]}, "2016-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.15, 35.75], [-87.25, 36.0], [-87.03, 36.53], [-86.5, 36.75], [-86.0, 36.54], [-85.5, 36.75], [-85.25, 36.65], [-85.0, 36.75], [-84.75, 36.65], [-84.5, 36.75], [-84.25, 36.65], [-84.0, 36.75], [-83.75, 36.65], [-83.5, 36.75], [-82.97, 36.53], [-82.8, 36.12], [-82.68, 36.18], [-82.53, 36.53], [-82.0, 36.75], [-81.75, 36.65], [-81.68, 36.68], [-81.53, 37.03], [-81.0, 37.25], [-80.47, 37.03], [-80.32, 36.68], [-79.97, 36.53], [-79.75, 36.0], [-79.97, 35.47], [-80.32, 35.32], [-80.47, 34.97], [-81.0, 34.75], [-81.25, 34.85], [-81.32, 34.82], [-81.47, 34.47], [-81.82, 34.32], [-81.97, 33.97], [-82.5, 33.75], [-83.03, 33.97], [-83.25, 34.5], [-83.04, 35.0], [-83.2, 35.38], [-83.5, 35.25], [-83.75, 35.35], [-83.82, 35.32], [-83.97, 34.97], [-84.5, 34.75], [-84.75, 34.85], [-85.0, 34.75], [-85.25, 34.85], [-85.5, 34.75], [-85.75, 34.85], [-85.82, 34.82], [-85.97, 34.47], [-86.5, 34.25], [-87.03, 34.47], [-87.25, 35.0], [-87.15, 35.25], [-87.25, 35.5], [-87.15, 35.75]]]]}, "2016-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.15, 35.75], [-87.25, 36.0], [-87.03, 36.53], [-86.5, 36.75], [-86.0, 36.54], [-85.5, 36.75], [-85.25, 36.65], [-85.0, 36.75], [-84.75, 36.65], [-84.5, 36.75], [-84.25, 36.65], [-84.0, 36.75], [-83.75, 36.65], [-83.5, 36.75], [-82.97, 36.53], [-82.8, 36.12], [-82.68, 36.18], [-82.53, 36.53], [-82.0, 36.75], [-81.75, 36.65], [-81.68, 36.68], [-81.53, 37.03], [-81.0, 37.25], [-80.47, 37.03], [-80.32, 36.68], [-79.97, 36.53], [-79.75, 36.0], [-79.87, 35.7], [-79.47, 35.53], [-79.25, 35.0], [-79.47, 34.47], [-79.82, 34.32], [-79.97, 33.97], [-80.32, 33.82], [-80.35, 33.75], [-80.25, 33.5], [-80.47, 32.97], [-80.82, 32.82], [-80.85, 32.75], [-80.75, 32.5], [-80.97, 31.97], [-81.32, 31.82], [-81.47, 31.47], [-81.82, 31.32], [-81.97, 30.97], [-82.5, 30.75], [-82.75, 30.85], [-83.0, 30.75], [-83.53, 30.97], [-83.75, 31.5], [-83.54, 32.0], [-83.75, 32.5], [-83.65, 32.75], [-83.68, 32.82], [-84.03, 32.97], [-84.18, 33.32], [-84.25, 33.35], [-84.5, 33.25], [-85.03, 33.47], [-85.18, 33.82], [-85.25, 33.85], [-85.5, 33.75], [-85.75, 33.85], [-86.0, 33.75], [-86.53, 33.97], [-86.68, 34.32], [-87.03, 34.47], [-87.25, 35.0], [-87.15, 35.25], [-87.25, 35.5], [-87.15, 35.75]]]]}, "2016-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.15, 35.75], [-87.25, 36.0], [-87.03, 36.53], [-86.5, 36.75], [-85.97, 36.53], [-85.82, 36.18], [-85.75, 36.15], [-85.5, 36.25], [-85.25, 36.15], [-85.18, 36.18], [-85.03, 36.53], [-84.5, 36.75], [-84.25, 36.65], [-84.0, 36.75], [-83.75, 36.65], [-83.5, 36.75], [-82.97, 36.53], [-82.8, 36.12], [-82.68, 36.18], [-82.53, 36.53], [-82.0, 36.75], [-81.75, 36.65], [-81.68, 36.68], [-81.53, 37.03], [-81.0, 37.25], [-80.47, 37.03], [-80.32, 36.68], [-79.97, 36.53], [-79.75, 36.0], [-79.87, 35.7], [-79.47, 35.53], [-79.25, 35.0], [-79.47, 34.47], [-79.82, 34.32], [-79.97, 33.97], [-80.32, 33.82], [-80.35, 33.75], [-80.25, 33.5], [-80.47, 32.97], [-80.82, 32.82], [-80.85, 32.75], [-80.75, 32.5], [-80.97, 31.97], [-81.32, 31.82], [-81.47, 31.47], [-81.82, 31.32], [-81.97, 30.97], [-82.32, 30.82], [-82.37, 30.7], [-81.97, 30.53], [-81.82, 30.18], [-81.47, 30.03], [-81.25, 29.5], [-81.47, 28.97], [-82.0, 28.75], [-82.25, 28.85], [-82.5, 28.75], [-82.75, 28.85], [-83.0, 28.75], [-83.53, 28.97], [-83.75, 29.5], [-83.53, 30.03], [-83.18, 30.18], [-83.12, 30.3], [-83.53, 30.47], [-83.75, 31.0], [-83.65, 31.25], [-83.75, 31.5], [-83.54, 32.0], [-83.68, 32.32], [-84.03, 32.47], [-84.18, 32.82], [-84.53, 32.97], [-84.68, 33.32], [-84.75, 33.35], [-85.0, 33.25], [-85.53, 33.47], [-85.68, 33.82], [-85.75, 33.85], [-86.0, 33.75], [-86.53, 33.97], [-86.68, 34.32], [-87.03, 34.47], [-87.25, 35.0], [-87.15, 35.25], [-87.25, 35.5], [-87.15, 35.75]]]]}, "2016-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.97, 29.03], [-79.75, 28.5], [-79.97, 27.97], [-80.5, 27.75], [-81.03, 27.97], [-81.25, 28.5], [-81.03, 29.03], [-80.5, 29.25], [-79.97, 29.03]]], [[[-86.0, 35.75], [-85.47, 35.53], [-85.32, 35.18], [-85.25, 35.15], [-85.18, 35.18], [-85.15, 35.25], [-85.25, 35.5], [-85.03, 36.03], [-84.5, 36.25], [-84.2, 36.12], [-84.03, 36.53], [-83.5, 36.75], [-82.97, 36.53], [-82.8, 36.12], [-82.5, 36.25], [-82.25, 36.15], [-82.0, 36.25], [-81.75, 36.15], [-81.68, 36.18], [-81.53, 36.53], [-81.0, 36.75], [-80.75, 36.65], [-80.5, 36.75], [-79.97, 36.53], [-79.75, 36.0], [-79.87, 35.7], [-79.47, 35.53], [-79.25, 35.0], [-79.47, 34.47], [-79.82, 34.32], [-79.97, 33.97], [-80.32, 33.82], [-80.35, 33.75], [-80.25, 33.5], [-80.47, 32.97], [-80.82, 32.82], [-80.85, 32.75], [-80.75, 32.5], [-80.97, 31.97], [-81.32, 31.82], [-81.46, 31.5], [-81.25, 31.0], [-81.46, 30.5], [-81.25, 30.0], [-81.35, 29.75], [-81.25, 29.5], [-81.35, 29.25], [-81.25, 29.0], [-81.35, 28.75], [-81.25, 28.5], [-81.47, 27.97], [-82.0, 27.75], [-82.53, 27.97], [-82.75, 28.5], [-82.65, 28.75], [-82.68, 28.82], [-82.75, 28.85], [-83.0, 28.75], [-83.53, 28.97], [-83.75, 29.5], [-83.65, 29.75], [-83.68, 29.82], [-84.03, 29.97], [-84.18, 30.32], [-84.25, 30.35], [-84.5, 30.25], [-85.03, 30.47], [-85.25, 31.0], [-85.15, 31.25], [-85.18, 31.32], [-85.25, 31.35], [-85.5, 31.25], [-86.03, 31.47], [-86.25, 32.0], [-86.15, 32.25], [-86.25, 32.5], [-86.03, 33.03], [-85.68, 33.18], [-85.65, 33.25], [-85.75, 33.5], [-85.65, 33.75], [-85.68, 33.82], [-85.75, 33.85], [-86.0, 33.75], [-86.53, 33.97], [-86.75, 34.5], [-86.65, 34.75], [-86.75, 35.0], [-86.53, 35.53], [-86.0, 35.75]]]]}, "2016-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.03, 30.03], [-80.5, 30.25], [-79.97, 30.03], [-79.75, 29.5], [-79.85, 29.25], [-79.75, 29.0], [-79.85, 28.75], [-79.75, 28.5], [-79.97, 27.97], [-80.5, 27.75], [-81.03, 27.97], [-81.25, 28.5], [-81.15, 28.75], [-81.25, 29.0], [-81.15, 29.25], [-81.25, 29.5], [-81.03, 30.03]]], [[[-86.03, 33.53], [-85.68, 33.68], [-85.65, 33.75], [-85.75, 34.0], [-85.65, 34.25], [-85.75, 34.5], [-85.53, 35.03], [-85.0, 35.25], [-84.75, 35.15], [-84.5, 35.25], [-83.97, 35.03], [-83.82, 34.68], [-83.7, 34.62], [-83.53, 35.03], [-83.0, 35.25], [-82.75, 35.15], [-82.5, 35.25], [-82.25, 35.15], [-82.0, 35.25], [-81.47, 35.03], [-81.32, 34.68], [-80.97, 34.53], [-80.75, 34.0], [-80.85, 33.75], [-80.75, 33.5], [-80.96, 33.0], [-80.75, 32.5], [-80.97, 31.97], [-81.32, 31.82], [-81.46, 31.5], [-81.25, 31.0], [-81.35, 30.75], [-81.25, 30.5], [-81.35, 30.25], [-81.25, 30.0], [-81.35, 29.75], [-81.25, 29.5], [-81.35, 29.25], [-81.25, 29.0], [-81.35, 28.75], [-81.25, 28.5], [-81.47, 27.97], [-82.0, 27.75], [-82.25, 27.85], [-82.5, 27.75], [-83.03, 27.97], [-83.25, 28.5], [-83.15, 28.75], [-83.18, 28.82], [-83.25, 28.85], [-83.5, 28.75], [-84.03, 28.97], [-84.25, 29.5], [-84.04, 30.0], [-84.18, 30.32], [-84.25, 30.35], [-84.5, 30.25], [-85.03, 30.47], [-85.25, 31.0], [-85.15, 31.25], [-85.18, 31.32], [-85.25, 31.35], [-85.5, 31.25], [-86.03, 31.47], [-86.25, 32.0], [-86.15, 32.25], [-86.25, 32.5], [-86.15, 32.75], [-86.25, 33.0], [-86.03, 33.53]]], [[[-84.25, 36.0], [-84.03, 36.53], [-83.5, 36.75], [-82.97, 36.53], [-82.75, 36.0], [-82.97, 35.47], [-83.5, 35.25], [-84.03, 35.47], [-84.25, 36.0]]]]}, "2016-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.15, 32.75], [-86.25, 33.0], [-86.03, 33.53], [-85.68, 33.68], [-85.53, 34.03], [-85.0, 34.25], [-84.75, 34.15], [-84.5, 34.25], [-84.25, 34.15], [-84.0, 34.25], [-83.75, 34.15], [-83.5, 34.25], [-83.25, 34.15], [-83.0, 34.25], [-82.75, 34.15], [-82.5, 34.25], [-81.97, 34.03], [-81.82, 33.68], [-81.47, 33.53], [-81.25, 33.0], [-81.35, 32.75], [-81.25, 32.5], [-81.35, 32.25], [-81.3, 32.12], [-81.0, 32.25], [-80.75, 32.15], [-80.5, 32.25], [-79.97, 32.03], [-79.75, 31.5], [-79.85, 31.25], [-79.75, 31.0], [-79.85, 30.75], [-79.75, 30.5], [-79.85, 30.25], [-79.75, 30.0], [-79.85, 29.75], [-79.75, 29.5], [-79.85, 29.25], [-79.75, 29.0], [-79.85, 28.75], [-79.75, 28.5], [-79.97, 27.97], [-80.5, 27.75], [-81.03, 27.97], [-81.2, 28.38], [-81.32, 28.32], [-81.47, 27.97], [-82.0, 27.75], [-82.25, 27.85], [-82.5, 27.75], [-83.03, 27.97], [-83.25, 28.5], [-83.15, 28.75], [-83.18, 28.82], [-83.25, 28.85], [-83.5, 28.75], [-84.03, 28.97], [-84.25, 29.5], [-84.04, 30.0], [-84.18, 30.32], [-84.25, 30.35], [-84.5, 30.25], [-85.03, 30.47], [-85.25, 31.0], [-85.15, 31.25], [-85.18, 31.32], [-85.25, 31.35], [-85.5, 31.25], [-86.03, 31.47], [-86.25, 32.0], [-86.15, 32.25], [-86.25, 32.5], [-86.15, 32.75]]]]}, "2016-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.03, 32.47], [-86.25, 33.0], [-86.03, 33.53], [-85.5, 33.75], [-85.25, 33.65], [-85.18, 33.68], [-85.03, 34.03], [-84.5, 34.25], [-84.25, 34.15], [-84.0, 34.25], [-83.75, 34.15], [-83.5, 34.25], [-83.25, 34.15], [-83.0, 34.25], [-82.75, 34.15], [-82.5, 34.25], [-81.97, 34.03], [-81.82, 33.68], [-81.47, 33.53], [-81.25, 33.0], [-81.47, 32.47], [-81.82, 32.32], [-81.97, 31.97], [-82.37, 31.8], [-82.32, 31.68], [-82.25, 31.65], [-82.0, 31.75], [-81.75, 31.65], [-81.68, 31.68], [-81.53, 32.03], [-81.0, 32.25], [-80.75, 32.15], [-80.5, 32.25], [-79.97, 32.03], [-79.75, 31.5], [-79.85, 31.25], [-79.75, 31.0], [-79.85, 30.75], [-79.75, 30.5], [-79.85, 30.25], [-79.75, 30.0], [-79.85, 29.75], [-79.75, 29.5], [-79.85, 29.25], [-79.75, 29.0], [-79.85, 28.75], [-79.75, 28.5], [-79.97, 27.97], [-80.5, 27.75], [-81.03, 27.97], [-81.2, 28.38], [-81.32, 28.32], [-81.47, 27.97], [-82.0, 27.75], [-82.25, 27.85], [-82.5, 27.75], [-83.03, 27.97], [-83.25, 28.5], [-83.15, 28.75], [-83.18, 28.82], [-83.25, 28.85], [-83.5, 28.75], [-84.03, 28.97], [-84.25, 29.5], [-84.03, 30.03], [-83.68, 30.18], [-83.65, 30.25], [-83.68, 30.32], [-83.75, 30.35], [-84.0, 30.25], [-84.25, 30.35], [-84.5, 30.25], [-85.03, 30.47], [-85.25, 31.0], [-85.15, 31.25], [-85.25, 31.5], [-85.03, 32.03], [-84.68, 32.18], [-84.65, 32.25], [-84.68, 32.32], [-84.75, 32.35], [-85.0, 32.25], [-85.25, 32.35], [-85.5, 32.25], [-86.03, 32.47]]]]}, "2016-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.68, 30.68], [-82.53, 31.03], [-82.18, 31.18], [-82.03, 31.53], [-81.68, 31.68], [-81.53, 32.03], [-81.0, 32.25], [-80.75, 32.15], [-80.5, 32.25], [-79.97, 32.03], [-79.75, 31.5], [-79.85, 31.25], [-79.75, 31.0], [-79.85, 30.75], [-79.75, 30.5], [-79.85, 30.25], [-79.75, 30.0], [-79.85, 29.75], [-79.75, 29.5], [-79.85, 29.25], [-79.75, 29.0], [-79.85, 28.75], [-79.75, 28.5], [-79.97, 27.97], [-80.5, 27.75], [-81.03, 27.97], [-81.2, 28.38], [-81.32, 28.32], [-81.47, 27.97], [-82.0, 27.75], [-82.53, 27.97], [-82.75, 28.5], [-82.65, 28.75], [-82.68, 28.82], [-82.75, 28.85], [-83.0, 28.75], [-83.53, 28.97], [-83.75, 29.5], [-83.53, 30.03], [-83.18, 30.18], [-83.03, 30.53], [-82.68, 30.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.592331802338265}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.541667295121042}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.28909923315689, 21.45649252302036, 23.134826241649307, 23.356070903047737, 24.423232913099355, 25.153458690113837, 25.45585860187191, 25.3348792612461, 25.429016252152792]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.040948248849475, 22.92997972898212, 25.66214024245329, 25.6041415586634, 26.698204147451975, 27.635708699732334, 27.584175796931447, 27.71986914277636, 27.0389439134222]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.1046686307424425, 5.4215760593776725, 5.220965858814155, 4.928636825500012, 4.829297605650497, 4.5243681184256515, 4.088283073686813, 3.6561438633092824, 2.8452005040112716]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.360521318620442, 6.559108122440705, 6.495181426805061, 6.592331802338265, 6.277224729162356, 6.060892458095395, 5.855823925684774, 5.074666947591879, 4.413524277718466]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3935994294384109, 1.484115381922608, 1.5127963985713218, 1.472687470191225, 1.5202928356224357, 1.5329327998783517, 1.524201469337909, 1.4645305295764526, 1.486861745673804]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4443864094634267, 1.7918897848326922, 1.8427439283714475, 1.9197567110791083, 1.8411853035715546, 2.094056036091464, 1.9917691207063906, 1.9682568184286715, 1.7511932131818215]}}