{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:54.060690", "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-Aug-19_to_2018-Aug-21_243.5_36.5"}, "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": 2018080002558}, "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": "August 19 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 21 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 64255.65327099377}, "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": 36.5}, "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": 243.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "243.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 242.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 246.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-117.18, 38.68], [-117.03, 39.03], [-116.5, 39.25], [-116.25, 39.15], [-116.0, 39.25], [-115.47, 39.03], [-115.32, 38.68], [-115.25, 38.65], [-115.0, 38.75], [-114.47, 38.53], [-114.25, 38.0], [-114.35, 37.75], [-114.32, 37.68], [-113.97, 37.53], [-113.82, 37.18], [-113.47, 37.03], [-113.25, 36.5], [-113.47, 35.97], [-114.0, 35.75], [-114.25, 35.85], [-114.32, 35.82], [-114.47, 35.47], [-115.0, 35.25], [-115.25, 35.35], [-115.32, 35.32], [-115.35, 35.25], [-115.25, 35.0], [-115.35, 34.75], [-115.25, 34.5], [-115.47, 33.97], [-116.0, 33.75], [-116.53, 33.97], [-116.75, 34.5], [-116.65, 34.75], [-116.75, 35.0], [-116.65, 35.25], [-116.75, 35.5], [-116.65, 35.75], [-116.68, 35.82], [-117.03, 35.97], [-117.25, 36.5], [-117.07, 36.93], [-117.5, 36.75], [-118.03, 36.97], [-118.25, 37.5], [-118.03, 38.03], [-117.68, 38.18], [-117.53, 38.53], [-117.18, 38.68]], [[-116.68, 37.18], [-116.62, 37.3], [-116.75, 37.35], [-116.82, 37.32], [-116.93, 37.07], [-116.68, 37.18]]]]}, "2018-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-117.18, 38.68], [-117.03, 39.03], [-116.5, 39.25], [-116.25, 39.15], [-116.0, 39.25], [-115.47, 39.03], [-115.32, 38.68], [-115.25, 38.65], [-115.0, 38.75], [-114.47, 38.53], [-114.25, 38.0], [-114.35, 37.75], [-114.32, 37.68], [-113.97, 37.53], [-113.82, 37.18], [-113.47, 37.03], [-113.25, 36.5], [-113.47, 35.97], [-114.0, 35.75], [-114.25, 35.85], [-114.32, 35.82], [-114.47, 35.47], [-115.0, 35.25], [-115.25, 35.35], [-115.32, 35.32], [-115.35, 35.25], [-115.25, 35.0], [-115.35, 34.75], [-115.25, 34.5], [-115.47, 33.97], [-116.0, 33.75], [-116.53, 33.97], [-116.75, 34.5], [-116.65, 34.75], [-116.75, 35.0], [-116.65, 35.25], [-116.75, 35.5], [-116.65, 35.75], [-116.68, 35.82], [-117.03, 35.97], [-117.25, 36.5], [-117.07, 36.93], [-117.5, 36.75], [-118.03, 36.97], [-118.25, 37.5], [-118.03, 38.03], [-117.68, 38.18], [-117.53, 38.53], [-117.18, 38.68]], [[-116.68, 37.18], [-116.62, 37.3], [-116.75, 37.35], [-116.82, 37.32], [-116.93, 37.07], [-116.68, 37.18]]]]}, "2018-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-117.18, 38.68], [-117.03, 39.03], [-116.5, 39.25], [-116.25, 39.15], [-116.0, 39.25], [-115.47, 39.03], [-115.32, 38.68], [-115.25, 38.65], [-115.0, 38.75], [-114.47, 38.53], [-114.25, 38.0], [-114.35, 37.75], [-114.32, 37.68], [-113.97, 37.53], [-113.82, 37.18], [-113.47, 37.03], [-113.25, 36.5], [-113.47, 35.97], [-114.0, 35.75], [-114.25, 35.85], [-114.32, 35.82], [-114.47, 35.47], [-115.0, 35.25], [-115.25, 35.35], [-115.32, 35.32], [-115.35, 35.25], [-115.25, 35.0], [-115.35, 34.75], [-115.25, 34.5], [-115.47, 33.97], [-116.0, 33.75], [-116.53, 33.97], [-116.75, 34.5], [-116.65, 34.75], [-116.75, 35.0], [-116.65, 35.25], [-116.75, 35.5], [-116.65, 35.75], [-116.68, 35.82], [-117.03, 35.97], [-117.25, 36.5], [-117.07, 36.93], [-117.5, 36.75], [-118.03, 36.97], [-118.25, 37.5], [-118.03, 38.03], [-117.68, 38.18], [-117.53, 38.53], [-117.18, 38.68]], [[-116.68, 37.18], [-116.62, 37.3], [-116.75, 37.35], [-116.82, 37.32], [-116.93, 37.07], [-116.68, 37.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.337118162278159}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.3741317386687797}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.914272882530042, 32.05362708733327, 31.09929638881073]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [36.609476835503074, 37.298902026842484, 36.371938218400544]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.420623039207542, 3.7215243016627606, 2.9802478751360364]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.323076098762215, 4.337118162278159, 3.3519853614515682]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5310835918197085, 1.7276261465144305, 1.3755955417158852]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8397847204588584, 1.9779016037937518, 1.507402212580227]}}