{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:11.026927", "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": "2011-Dec-08_to_2011-Dec-10_352.5_25.5"}, "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": 2011120002028}, "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": "December 08 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 10 2011"}, "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": 55808.8217531271}, "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": ["Algeria", "Mali", "Mauritania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 25.5}, "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": 352.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "352.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 355.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.25, 25.5], [-8.03, 26.03], [-7.68, 26.18], [-7.53, 26.53], [-7.0, 26.75], [-6.75, 26.65], [-6.68, 26.68], [-6.53, 27.03], [-6.0, 27.25], [-5.47, 27.03], [-5.32, 26.68], [-5.25, 26.65], [-5.0, 26.75], [-4.47, 26.53], [-4.32, 26.18], [-3.97, 26.03], [-3.75, 25.5], [-3.85, 25.25], [-3.75, 25.0], [-3.97, 24.47], [-4.5, 24.25], [-4.75, 24.35], [-5.0, 24.25], [-5.25, 24.35], [-5.5, 24.25], [-5.75, 24.35], [-5.82, 24.32], [-5.97, 23.97], [-6.5, 23.75], [-7.03, 23.97], [-7.18, 24.32], [-7.53, 24.47], [-7.68, 24.82], [-8.03, 24.97], [-8.25, 25.5]]]]}, "2011-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.25, 25.5], [-8.03, 26.03], [-7.68, 26.18], [-7.53, 26.53], [-7.0, 26.75], [-6.75, 26.65], [-6.68, 26.68], [-6.53, 27.03], [-6.0, 27.25], [-5.47, 27.03], [-5.32, 26.68], [-5.25, 26.65], [-5.0, 26.75], [-4.47, 26.53], [-4.32, 26.18], [-3.97, 26.03], [-3.75, 25.5], [-3.85, 25.25], [-3.75, 25.0], [-3.97, 24.47], [-4.5, 24.25], [-4.75, 24.35], [-5.0, 24.25], [-5.25, 24.35], [-5.5, 24.25], [-5.75, 24.35], [-5.82, 24.32], [-5.97, 23.97], [-6.5, 23.75], [-7.03, 23.97], [-7.18, 24.32], [-7.53, 24.47], [-7.68, 24.82], [-8.03, 24.97], [-8.25, 25.5]]]]}, "2011-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.25, 25.5], [-8.03, 26.03], [-7.68, 26.18], [-7.53, 26.53], [-7.0, 26.75], [-6.75, 26.65], [-6.68, 26.68], [-6.53, 27.03], [-6.0, 27.25], [-5.47, 27.03], [-5.32, 26.68], [-5.25, 26.65], [-5.0, 26.75], [-4.47, 26.53], [-4.32, 26.18], [-3.97, 26.03], [-3.75, 25.5], [-3.85, 25.25], [-3.75, 25.0], [-3.97, 24.47], [-4.5, 24.25], [-4.75, 24.35], [-5.0, 24.25], [-5.25, 24.35], [-5.5, 24.25], [-5.75, 24.35], [-5.82, 24.32], [-5.97, 23.97], [-6.5, 23.75], [-7.03, 23.97], [-7.18, 24.32], [-7.53, 24.47], [-7.68, 24.82], [-8.03, 24.97], [-8.25, 25.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.267863638561721}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.3474237779485114}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.347426138901653, 19.36350330950819, 19.033319242336574]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.386123098671305, 20.003435774155435, 19.728669884101407]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.348928934528567, 3.461959938248262, 3.231382461068705]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.8606834613416936, 4.267863638561721, 3.6484169831611553]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4897817265105135, 1.5965177075619756, 1.540433508360826]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7174101813147409, 1.896601050929595, 1.6688843545538523]}}