{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:26.826641", "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": "2018-Oct-31_to_2018-Nov-05_241.0_33.5"}, "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": 2018100003050}, "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 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 05 2018"}, "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": 79416.67716501554}, "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.Central-America", "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": 33.5}, "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": 241.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "241.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 238.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 243.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.0, 34.25], [-118.47, 34.03], [-118.25, 33.5], [-118.47, 32.97], [-119.0, 32.75], [-119.53, 32.97], [-119.75, 33.5], [-119.53, 34.03], [-119.0, 34.25]]]]}, "2018-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-119.53, 34.03], [-119.0, 34.25], [-118.47, 34.03], [-118.25, 33.5], [-118.35, 33.25], [-118.25, 33.0], [-118.47, 32.47], [-119.0, 32.25], [-119.53, 32.47], [-119.75, 33.0], [-119.65, 33.25], [-119.75, 33.5], [-119.53, 34.03]]]]}, "2018-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.75, 35.5], [-121.53, 36.03], [-121.0, 36.25], [-120.47, 36.03], [-120.32, 35.68], [-119.97, 35.53], [-119.82, 35.18], [-119.75, 35.15], [-119.5, 35.25], [-119.25, 35.15], [-119.0, 35.25], [-118.75, 35.15], [-118.5, 35.25], [-117.97, 35.03], [-117.82, 34.68], [-117.75, 34.65], [-117.5, 34.75], [-116.97, 34.53], [-116.82, 34.18], [-116.47, 34.03], [-116.25, 33.5], [-116.47, 32.97], [-117.0, 32.75], [-117.25, 32.85], [-117.5, 32.75], [-117.75, 32.85], [-118.0, 32.75], [-118.25, 32.85], [-118.32, 32.82], [-118.47, 32.47], [-118.82, 32.32], [-118.97, 31.97], [-119.5, 31.75], [-119.75, 31.85], [-120.0, 31.75], [-120.53, 31.97], [-120.68, 32.32], [-121.03, 32.47], [-121.25, 33.0], [-121.15, 33.25], [-121.25, 33.5], [-121.15, 33.75], [-121.25, 34.0], [-121.15, 34.25], [-121.25, 34.5], [-121.15, 34.75], [-121.18, 34.82], [-121.53, 34.97], [-121.75, 35.5]]]]}, "2018-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.75, 35.5], [-121.53, 36.03], [-121.0, 36.25], [-120.75, 36.15], [-120.68, 36.18], [-120.53, 36.53], [-120.0, 36.75], [-119.47, 36.53], [-119.25, 36.0], [-119.35, 35.75], [-119.32, 35.68], [-118.97, 35.53], [-118.82, 35.18], [-118.75, 35.15], [-118.5, 35.25], [-117.97, 35.03], [-117.82, 34.68], [-117.75, 34.65], [-117.5, 34.75], [-116.97, 34.53], [-116.82, 34.18], [-116.47, 34.03], [-116.25, 33.5], [-116.47, 32.97], [-117.0, 32.75], [-117.25, 32.85], [-117.5, 32.75], [-117.75, 32.85], [-118.0, 32.75], [-118.25, 32.85], [-118.32, 32.82], [-118.47, 32.47], [-118.82, 32.32], [-118.97, 31.97], [-119.5, 31.75], [-119.75, 31.85], [-120.0, 31.75], [-120.53, 31.97], [-120.68, 32.32], [-121.03, 32.47], [-121.25, 33.0], [-121.15, 33.25], [-121.25, 33.5], [-121.15, 33.75], [-121.25, 34.0], [-121.15, 34.25], [-121.25, 34.5], [-121.15, 34.75], [-121.18, 34.82], [-121.53, 34.97], [-121.75, 35.5]]]]}, "2018-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.75, 35.5], [-121.53, 36.03], [-121.0, 36.25], [-120.75, 36.15], [-120.68, 36.18], [-120.53, 36.53], [-120.0, 36.75], [-119.47, 36.53], [-119.25, 36.0], [-119.35, 35.75], [-119.32, 35.68], [-118.97, 35.53], [-118.82, 35.18], [-118.75, 35.15], [-118.5, 35.25], [-117.97, 35.03], [-117.82, 34.68], [-117.75, 34.65], [-117.5, 34.75], [-116.97, 34.53], [-116.82, 34.18], [-116.47, 34.03], [-116.25, 33.5], [-116.47, 32.97], [-117.0, 32.75], [-117.25, 32.85], [-117.5, 32.75], [-117.75, 32.85], [-118.0, 32.75], [-118.25, 32.85], [-118.5, 32.75], [-118.75, 32.85], [-118.82, 32.82], 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"value": 5.719737720376202}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.417042829549493}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.679935381717257, 19.29376257067804, 19.393950294548233, 19.63376426109835, 19.47442027955975, 18.744969093390296]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.679935381717257, 19.497165659453344, 21.234168645067257, 21.56892059190784, 21.119169048589754, 19.286093755362344]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.2865244822156683, 2.0315596151318402, 3.136216758914191, 3.588831651775446, 3.5054993418569, 4.117970794568601]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.2865244822156683, 2.1452370659688427, 4.512977095644146, 5.719737720376202, 5.496914576073095, 4.985168501904013]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5329633311674309, 1.393828812205767, 1.628294672730824, 1.6976045001763027, 1.6573104292022223, 1.4052598743596472]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5329633311674309, 1.43166519706343, 1.9944384159779327, 2.171833090380703, 2.0581430998614283, 1.5476295906282722]}}