{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:21.018304", "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": "2021-Sep-07_to_2021-Sep-10_246.0_44.0"}, "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": 2021090001484}, "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": "September 07 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 10 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 54810.628883846905}, "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": 44.0}, "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": 246.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "246.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 243.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 248.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 46.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.53, 43.47], [-115.75, 44.0], [-115.53, 44.53], [-115.0, 44.75], [-114.75, 44.65], [-114.68, 44.68], [-114.53, 45.03], [-114.0, 45.25], [-113.75, 45.15], [-113.5, 45.25], [-113.25, 45.15], [-113.0, 45.25], [-112.47, 45.03], [-112.25, 44.5], [-112.35, 44.25], [-112.25, 44.0], [-112.47, 43.47], [-113.0, 43.25], [-113.25, 43.35], [-113.5, 43.25], [-113.75, 43.35], [-114.0, 43.25], [-114.25, 43.35], [-114.5, 43.25], [-114.75, 43.35], [-115.0, 43.25], [-115.53, 43.47]]]]}, "2021-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.53, 44.97], [-116.75, 45.5], [-116.53, 46.03], [-116.0, 46.25], [-115.75, 46.15], [-115.5, 46.25], [-115.25, 46.15], [-115.18, 46.18], [-115.03, 46.53], [-114.5, 46.75], [-114.0, 46.54], [-113.5, 46.75], [-112.97, 46.53], [-112.82, 46.18], [-112.47, 46.03], [-112.25, 45.5], [-112.35, 45.25], [-112.32, 45.18], [-112.25, 45.15], [-112.0, 45.25], [-111.47, 45.03], [-111.25, 44.5], [-111.47, 43.97], [-112.0, 43.75], [-112.25, 43.85], [-112.32, 43.82], [-112.47, 43.47], [-112.82, 43.32], [-112.97, 42.97], [-113.5, 42.75], [-114.03, 42.97], [-114.18, 43.32], [-114.25, 43.35], [-114.5, 43.25], [-114.75, 43.35], [-115.0, 43.25], [-115.53, 43.47], [-115.75, 44.0], [-115.54, 44.5], [-115.68, 44.82], [-115.75, 44.85], [-116.0, 44.75], [-116.53, 44.97]]]]}, "2021-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.53, 44.97], [-116.75, 45.5], [-116.53, 46.03], [-116.0, 46.25], [-115.75, 46.15], [-115.5, 46.25], [-115.25, 46.15], [-115.18, 46.18], [-115.03, 46.53], [-114.5, 46.75], [-114.0, 46.54], [-113.5, 46.75], [-112.97, 46.53], [-112.82, 46.18], [-112.47, 46.03], [-112.25, 45.5], [-112.35, 45.25], [-112.32, 45.18], [-112.25, 45.15], [-112.0, 45.25], [-111.47, 45.03], [-111.25, 44.5], [-111.47, 43.97], [-112.0, 43.75], [-112.25, 43.85], [-112.32, 43.82], [-112.47, 43.47], [-112.82, 43.32], [-112.97, 42.97], [-113.5, 42.75], [-114.03, 42.97], [-114.18, 43.32], [-114.25, 43.35], [-114.5, 43.25], [-114.75, 43.35], [-115.0, 43.25], [-115.53, 43.47], [-115.75, 44.0], [-115.54, 44.5], [-115.68, 44.82], [-115.75, 44.85], [-116.0, 44.75], [-116.53, 44.97]]]]}, "2021-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.53, 44.97], [-116.75, 45.5], [-116.53, 46.03], [-116.0, 46.25], [-115.75, 46.15], [-115.5, 46.25], [-115.25, 46.15], [-115.18, 46.18], [-115.03, 46.53], [-114.5, 46.75], [-114.0, 46.54], [-113.5, 46.75], [-112.97, 46.53], [-112.82, 46.18], [-112.47, 46.03], [-112.25, 45.5], [-112.35, 45.25], [-112.32, 45.18], [-112.25, 45.15], [-112.0, 45.25], [-111.47, 45.03], [-111.25, 44.5], [-111.47, 43.97], [-112.0, 43.75], [-112.25, 43.85], [-112.32, 43.82], [-112.47, 43.47], [-112.82, 43.32], [-112.97, 42.97], [-113.5, 42.75], [-114.03, 42.97], [-114.18, 43.32], [-114.25, 43.35], [-114.5, 43.25], [-115.03, 43.47], [-115.25, 44.0], [-115.15, 44.25], [-115.18, 44.32], [-115.53, 44.47], [-115.68, 44.82], [-115.75, 44.85], [-116.0, 44.75], [-116.53, 44.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.756367142022782}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.87660257103214}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.744980625845415, 18.292255439524922, 18.831389951841516, 18.12003213190826]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.29943426499898, 21.520902369879252, 22.471268678043373, 23.28506429110513]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.1945189591038385, 5.628641061779538, 6.381395298355722, 5.836431256184302]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.49035646072042, 7.051888402605641, 7.756367142022782, 7.490128969616592]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.36304464268536, 1.474281029314208, 1.6484652800342434, 1.4935441780487053]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4472298877467025, 1.7720039161637324, 1.9656247989431597, 1.9403135137500105]}}