{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:57:38.687870", "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": "2025-Oct-31_to_2025-Nov-06_248.5_39.5"}, "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": 2025100002558}, "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": "October 31 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 06 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 262841.96826707193}, "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": []}, "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": 39.5}, "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": 248.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "248.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 239.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 251.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.0, 39.75], [-119.47, 39.53], [-119.25, 39.0], [-119.47, 38.47], [-120.0, 38.25], [-120.53, 38.47], [-120.75, 39.0], [-120.53, 39.53], [-120.0, 39.75]]]]}, "2025-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.53, 40.03], [-120.0, 40.25], [-119.47, 40.03], [-119.25, 39.5], [-119.35, 39.25], [-119.32, 39.18], [-118.97, 39.03], [-118.8, 38.63], [-118.5, 38.75], [-118.25, 38.65], [-118.0, 38.75], [-117.47, 38.53], [-117.25, 38.0], [-117.35, 37.75], [-117.25, 37.5], [-117.47, 36.97], [-118.0, 36.75], [-118.53, 36.97], [-118.68, 37.32], [-119.03, 37.47], [-119.2, 37.88], [-119.5, 37.75], [-120.03, 37.97], [-120.18, 38.32], [-120.53, 38.47], [-120.75, 39.0], [-120.65, 39.25], [-120.75, 39.5], [-120.53, 40.03]]]]}, "2025-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.18, 40.18], [-120.03, 40.53], [-119.5, 40.75], [-118.97, 40.53], [-118.75, 40.0], [-118.85, 39.75], [-118.75, 39.5], [-118.53, 40.03], [-118.0, 40.25], [-117.47, 40.03], [-117.32, 39.68], [-117.25, 39.65], [-117.0, 39.75], [-116.47, 39.53], [-116.32, 39.18], [-116.2, 39.13], [-116.03, 39.53], [-115.68, 39.68], [-115.65, 39.75], [-115.75, 40.0], [-115.53, 40.53], [-115.0, 40.75], [-114.75, 40.65], [-114.5, 40.75], [-113.97, 40.53], [-113.75, 40.0], [-113.85, 39.75], [-113.75, 39.5], [-113.85, 39.25], [-113.75, 39.0], [-113.85, 38.75], [-113.75, 38.5], [-113.85, 38.25], [-113.75, 38.0], [-113.97, 37.47], [-114.32, 37.32], [-114.47, 36.97], [-115.0, 36.75], [-115.25, 36.85], [-115.5, 36.75], [-115.75, 36.85], [-115.82, 36.82], [-115.97, 36.47], [-116.5, 36.25], [-117.03, 36.47], [-117.18, 36.82], [-117.25, 36.85], [-117.5, 36.75], [-117.75, 36.85], [-118.0, 36.75], [-118.53, 36.97], [-118.68, 37.32], [-119.03, 37.47], [-119.18, 37.82], [-119.25, 37.85], [-119.5, 37.75], [-120.03, 37.97], [-120.18, 38.32], [-120.53, 38.47], [-120.75, 39.0], [-120.65, 39.25], [-120.75, 39.5], [-120.53, 40.03], [-120.18, 40.18]], [[-118.85, 39.25], [-118.82, 39.18], [-118.75, 39.15], [-118.62, 39.2], [-118.75, 39.5], [-118.85, 39.25]]], [[[-113.03, 39.03], [-112.5, 39.25], [-113.03, 39.47], [-113.25, 40.0], [-113.03, 40.53], [-112.5, 40.75], [-111.97, 40.53], [-111.8, 40.13], [-111.5, 40.25], [-111.2, 40.13], [-111.03, 40.53], [-110.5, 40.75], [-109.97, 40.53], [-109.75, 40.0], [-109.97, 39.47], [-110.5, 39.25], [-110.8, 39.38], [-110.85, 39.25], [-110.75, 39.0], [-110.85, 38.75], [-110.75, 38.5], [-110.97, 37.97], [-111.32, 37.82], [-111.47, 37.47], [-112.0, 37.25], [-112.53, 37.47], [-112.68, 37.82], [-113.03, 37.97], [-113.25, 38.5], [-113.03, 39.03]], [[-112.25, 39.15], [-112.18, 39.18], [-112.15, 39.25], [-112.2, 39.38], [-112.5, 39.25], [-112.25, 39.15]]]]}, "2025-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.75, 39.5], [-120.53, 40.03], [-120.18, 40.18], [-120.03, 40.53], [-119.5, 40.75], [-118.97, 40.53], [-118.75, 40.0], [-118.85, 39.75], [-118.75, 39.5], [-118.53, 40.03], [-118.0, 40.25], [-117.47, 40.03], [-117.32, 39.68], [-117.25, 39.65], [-117.0, 39.75], [-116.5, 39.54], [-116.0, 39.75], [-115.75, 39.65], [-115.68, 39.68], [-115.65, 39.75], [-115.75, 40.0], [-115.53, 40.53], [-115.0, 40.75], [-114.75, 40.65], [-114.5, 40.75], [-113.97, 40.53], [-113.82, 40.18], [-113.47, 40.03], [-113.32, 39.68], [-113.07, 39.57], [-113.25, 40.0], [-113.03, 40.53], [-112.5, 40.75], [-112.25, 40.65], [-112.0, 40.75], [-111.47, 40.53], [-111.32, 40.18], [-111.25, 40.15], [-111.18, 40.18], [-111.03, 40.53], [-110.5, 40.75], [-109.97, 40.53], [-109.75, 40.0], [-109.97, 39.47], [-110.32, 39.32], [-110.35, 39.25], [-110.25, 39.0], [-110.47, 38.47], [-110.82, 38.32], [-110.85, 38.25], [-110.75, 38.0], [-110.97, 37.47], [-111.32, 37.32], [-111.47, 36.97], [-112.0, 36.75], [-112.53, 36.97], [-112.75, 37.5], [-112.65, 37.75], [-112.68, 37.82], [-113.0, 37.96], [-113.5, 37.75], [-113.75, 37.85], [-113.82, 37.82], [-113.97, 37.47], [-114.32, 37.32], [-114.47, 36.97], [-114.82, 36.82], [-114.97, 36.47], [-115.5, 36.25], [-115.75, 36.35], [-116.0, 36.25], [-116.25, 36.35], [-116.5, 36.25], [-117.03, 36.47], [-117.18, 36.82], [-117.25, 36.85], [-117.5, 36.75], [-117.75, 36.85], [-118.0, 36.75], [-118.53, 36.97], [-118.68, 37.32], [-119.03, 37.47], [-119.18, 37.82], [-119.25, 37.85], [-119.5, 37.75], [-120.03, 37.97], [-120.25, 38.5], [-120.15, 38.75], [-120.18, 38.82], [-120.53, 38.97], [-120.75, 39.5]], [[-118.85, 39.25], [-118.82, 39.18], [-118.75, 39.15], [-118.62, 39.2], [-118.75, 39.5], [-118.85, 39.25]], [[-112.68, 39.18], [-112.62, 39.3], [-112.93, 39.43], [-112.8, 39.13], [-112.68, 39.18]]]]}, "2025-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.75, 39.5], [-120.53, 40.03], [-120.18, 40.18], [-120.03, 40.53], [-119.5, 40.75], [-118.97, 40.53], [-118.75, 40.0], [-118.85, 39.75], [-118.75, 39.5], [-118.53, 40.03], [-118.0, 40.25], [-117.47, 40.03], [-117.32, 39.68], [-117.25, 39.65], [-117.0, 39.75], [-116.5, 39.54], [-116.0, 39.75], [-115.75, 39.65], [-115.68, 39.68], [-115.65, 39.75], [-115.75, 40.0], [-115.53, 40.53], [-115.0, 40.75], [-114.75, 40.65], [-114.68, 40.68], [-114.65, 40.75], [-114.75, 41.0], [-114.53, 41.53], [-114.18, 41.68], [-114.03, 42.03], [-113.68, 42.18], [-113.53, 42.53], [-113.0, 42.75], [-112.75, 42.65], [-112.5, 42.75], [-112.25, 42.65], [-112.0, 42.75], [-111.75, 42.65], [-111.5, 42.75], [-111.25, 42.65], [-111.0, 42.75], [-110.47, 42.53], [-110.32, 42.18], [-110.25, 42.15], [-110.0, 42.25], [-109.75, 42.15], [-109.68, 42.18], [-109.53, 42.53], [-109.0, 42.75], [-108.47, 42.53], [-108.25, 42.0], [-108.35, 41.75], [-108.25, 41.5], [-108.47, 40.97], [-109.0, 40.75], [-109.25, 40.85], [-109.32, 40.82], [-109.35, 40.75], [-109.25, 40.5], [-109.47, 39.97], [-109.82, 39.82], [-109.97, 39.47], [-110.32, 39.32], [-110.35, 39.25], [-110.25, 39.0], [-110.46, 38.5], [-110.25, 38.0], [-110.47, 37.47], [-111.0, 37.25], [-111.25, 37.35], [-111.32, 37.32], [-111.47, 36.97], [-112.0, 36.75], [-112.53, 36.97], [-112.75, 37.5], [-112.65, 37.75], [-112.68, 37.82], [-112.75, 37.85], [-113.0, 37.75], [-113.25, 37.85], [-113.5, 37.75], [-113.75, 37.85], [-113.82, 37.82], [-113.97, 37.47], [-114.32, 37.32], [-114.37, 37.2], [-113.97, 37.03], [-113.82, 36.68], [-113.47, 36.53], [-113.25, 36.0], [-113.47, 35.47], [-114.0, 35.25], [-114.25, 35.35], [-114.5, 35.25], [-115.03, 35.47], [-115.18, 35.82], [-115.53, 35.97], [-115.68, 36.32], [-115.75, 36.35], [-116.0, 36.25], [-116.25, 36.35], [-116.32, 36.32], [-116.47, 35.97], [-117.0, 35.75], [-117.53, 35.97], [-117.75, 36.5], [-117.62, 36.8], [-117.75, 36.85], [-118.0, 36.75], [-118.53, 36.97], [-118.75, 37.5], [-118.65, 37.75], [-118.68, 37.82], [-118.75, 37.85], [-119.0, 37.75], [-119.25, 37.85], [-119.5, 37.75], [-120.03, 37.97], [-120.25, 38.5], [-120.15, 38.75], [-120.18, 38.82], [-120.53, 38.97], [-120.75, 39.5]], [[-118.85, 39.25], [-118.82, 39.18], [-118.75, 39.15], [-118.62, 39.2], [-118.75, 39.5], [-118.85, 39.25]]]]}, "2025-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.03, 39.03], [-118.62, 39.2], [-118.75, 39.5], [-118.53, 40.03], [-118.0, 40.25], [-117.47, 40.03], [-117.25, 39.5], [-117.46, 39.0], [-117.3, 38.63], [-117.0, 38.75], [-116.57, 38.57], [-116.75, 39.0], [-116.53, 39.53], [-116.0, 39.75], [-115.75, 39.65], [-115.68, 39.68], [-115.65, 39.75], [-115.75, 40.0], [-115.53, 40.53], [-115.0, 40.75], [-114.75, 40.65], [-114.68, 40.68], [-114.65, 40.75], [-114.75, 41.0], [-114.53, 41.53], [-114.18, 41.68], [-114.03, 42.03], [-113.68, 42.18], [-113.53, 42.53], [-113.0, 42.75], [-112.75, 42.65], [-112.5, 42.75], [-112.25, 42.65], [-112.0, 42.75], [-111.75, 42.65], [-111.5, 42.75], [-111.25, 42.65], [-111.0, 42.75], [-110.47, 42.53], [-110.32, 42.18], [-110.25, 42.15], [-110.0, 42.25], [-109.75, 42.15], [-109.68, 42.18], [-109.53, 42.53], [-109.0, 42.75], [-108.47, 42.53], [-108.25, 42.0], [-108.35, 41.75], [-108.25, 41.5], [-108.47, 40.97], [-109.0, 40.75], [-109.25, 40.85], [-109.32, 40.82], [-109.35, 40.75], [-109.25, 40.5], [-109.47, 39.97], [-109.82, 39.82], [-109.97, 39.47], [-110.32, 39.32], [-110.35, 39.25], [-110.25, 39.0], [-110.46, 38.5], [-110.25, 38.0], [-110.47, 37.47], [-111.0, 37.25], [-111.25, 37.35], [-111.32, 37.32], [-111.47, 36.97], [-112.0, 36.75], [-112.53, 36.97], [-112.75, 37.5], [-112.65, 37.75], [-112.68, 37.82], [-112.75, 37.85], [-113.0, 37.75], [-113.25, 37.85], [-113.5, 37.75], [-113.75, 37.85], [-114.0, 37.75], [-114.25, 37.85], [-114.5, 37.75], [-115.03, 37.97], [-115.2, 38.38], [-115.5, 38.25], [-115.75, 38.35], [-116.0, 38.25], [-116.43, 38.43], [-116.32, 38.18], [-115.97, 38.03], [-115.82, 37.68], [-115.75, 37.65], [-115.5, 37.75], [-114.97, 37.53], [-114.82, 37.18], [-114.75, 37.15], [-114.5, 37.25], [-113.97, 37.03], [-113.82, 36.68], [-113.47, 36.53], [-113.25, 36.0], [-113.47, 35.47], [-114.0, 35.25], [-114.25, 35.35], [-114.5, 35.25], [-115.03, 35.47], [-115.18, 35.82], [-115.53, 35.97], [-115.68, 36.32], [-115.75, 36.35], [-116.0, 36.25], [-116.3, 36.38], [-116.47, 35.97], [-117.0, 35.75], [-117.53, 35.97], [-117.75, 36.5], [-117.53, 37.03], [-117.12, 37.2], [-117.18, 37.32], [-117.5, 37.46], [-118.0, 37.25], [-118.53, 37.47], [-118.68, 37.82], [-119.03, 37.97], [-119.25, 38.5], [-119.03, 39.03]]], [[[-120.03, 39.47], [-120.25, 40.0], [-120.03, 40.53], [-119.5, 40.75], [-118.97, 40.53], [-118.75, 40.0], [-118.97, 39.47], [-119.5, 39.25], [-120.03, 39.47]]]]}, "2025-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-117.53, 38.53], [-117.0, 38.75], [-116.47, 38.53], [-116.25, 38.0], [-116.43, 37.57], [-116.0, 37.75], [-115.75, 37.65], [-115.5, 37.75], [-114.97, 37.53], [-114.82, 37.18], [-114.75, 37.15], [-114.5, 37.25], [-113.97, 37.03], [-113.82, 36.68], [-113.47, 36.53], [-113.25, 36.0], [-113.47, 35.47], [-114.0, 35.25], [-114.25, 35.35], [-114.5, 35.25], [-115.03, 35.47], [-115.18, 35.82], [-115.53, 35.97], [-115.68, 36.32], [-115.75, 36.35], [-116.0, 36.25], [-116.3, 36.38], [-116.47, 35.97], [-117.0, 35.75], [-117.53, 35.97], [-117.75, 36.5], [-117.53, 37.03], [-117.0, 37.25], [-117.53, 37.47], [-117.75, 38.0], [-117.53, 38.53]], [[-116.7, 37.13], [-116.57, 37.43], [-117.0, 37.25], [-116.7, 37.13]]], [[[-114.65, 39.75], [-114.75, 40.0], [-114.65, 40.25], [-114.75, 40.5], [-114.65, 40.75], [-114.75, 41.0], [-114.53, 41.53], [-114.18, 41.68], [-114.03, 42.03], [-113.68, 42.18], [-113.53, 42.53], [-113.0, 42.75], [-112.75, 42.65], [-112.5, 42.75], [-112.25, 42.65], [-112.0, 42.75], [-111.75, 42.65], [-111.5, 42.75], [-111.25, 42.65], [-111.0, 42.75], [-110.47, 42.53], [-110.32, 42.18], [-110.25, 42.15], [-110.0, 42.25], [-109.75, 42.15], [-109.68, 42.18], [-109.53, 42.53], [-109.0, 42.75], [-108.47, 42.53], [-108.25, 42.0], [-108.35, 41.75], [-108.25, 41.5], [-108.47, 40.97], [-109.0, 40.75], [-109.25, 40.85], [-109.32, 40.82], [-109.35, 40.75], [-109.25, 40.5], [-109.47, 39.97], [-109.82, 39.82], [-109.97, 39.47], [-110.32, 39.32], [-110.35, 39.25], [-110.25, 39.0], [-110.46, 38.5], [-110.25, 38.0], [-110.47, 37.47], [-111.0, 37.25], [-111.25, 37.35], [-111.32, 37.32], [-111.47, 36.97], [-112.0, 36.75], [-112.53, 36.97], [-112.75, 37.5], [-112.65, 37.75], [-112.68, 37.82], [-112.75, 37.85], [-113.0, 37.75], [-113.25, 37.85], [-113.5, 37.75], [-113.75, 37.85], [-114.0, 37.75], [-114.25, 37.85], [-114.5, 37.75], [-115.03, 37.97], [-115.25, 38.5], [-115.03, 39.03], [-114.68, 39.18], [-114.65, 39.25], [-114.75, 39.5], [-114.65, 39.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.56223620948009}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.339141707000228}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.52878087361654, 11.605142211914085, 12.400322384304502, 12.116991450868909, 12.096684839696138, 11.700454936655944, 11.116888727336175]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.52878087361654, 14.101480102539085, 16.057424163818382, 16.93050028483077, 22.055898284912132, 21.43848826090499, 21.60804392496749]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.651121736251923, 5.149286884014742, 5.980362082781676, 5.953571238718446, 6.432415095844908, 6.656384559791586, 6.475839074446203]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.651121736251923, 5.76457230412467, 7.353239707098396, 7.290134107600409, 9.56223620948009, 8.881172046198174, 8.527859109653207]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2599587130561707, 1.3131083616273915, 1.373220359055517, 1.3564505852767201, 1.4594539473226307, 1.5152048359878485, 1.494613583171505]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2599587130561707, 1.4108657535304847, 1.5814534829081162, 1.5732487956961165, 1.914586916952636, 2.0188550851487164, 1.901241685758296]}}