{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:33.200482", "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-Apr-20_to_2018-Apr-25_357.0_12.5"}, "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": 2018040002293}, "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": "April 20 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 25 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": 108680.17457682859}, "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": ["Burkina Faso", "Mali"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "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": 12.5}, "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": 357.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 353.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.03, 11.97], [-4.25, 12.5], [-4.03, 13.03], [-3.5, 13.25], [-3.25, 13.15], [-3.0, 13.25], [-2.47, 13.03], [-2.25, 12.5], [-2.47, 11.97], [-3.0, 11.75], [-3.25, 11.85], [-3.5, 11.75], [-4.03, 11.97]]]]}, "2018-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.03, 13.53], [-4.5, 13.75], [-4.0, 13.54], [-3.5, 13.75], [-2.97, 13.53], [-2.82, 13.18], [-2.47, 13.03], [-2.25, 12.5], [-2.47, 11.97], [-3.0, 11.75], [-3.25, 11.85], [-3.5, 11.75], [-4.0, 11.96], [-4.5, 11.75], [-5.03, 11.97], [-5.25, 12.5], [-5.15, 12.75], [-5.25, 13.0], [-5.03, 13.53]]]]}, "2018-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.53, 13.03], [-6.0, 13.25], [-5.7, 13.12], [-5.53, 13.53], [-5.0, 13.75], [-4.75, 13.65], [-4.5, 13.75], [-4.25, 13.65], [-4.0, 13.75], [-3.75, 13.65], [-3.5, 13.75], [-2.97, 13.53], [-2.82, 13.18], [-2.47, 13.03], [-2.32, 12.68], [-2.25, 12.65], [-2.0, 12.75], [-1.47, 12.53], [-1.25, 12.0], [-1.35, 11.75], [-1.25, 11.5], [-1.47, 10.97], [-2.0, 10.75], [-2.53, 10.97], [-2.68, 11.32], [-3.03, 11.47], [-3.18, 11.82], [-3.25, 11.85], [-3.32, 11.82], [-3.47, 11.47], [-4.0, 11.25], [-4.25, 11.35], [-4.32, 11.32], [-4.47, 10.97], [-5.0, 10.75], [-5.53, 10.97], [-5.68, 11.32], [-5.75, 11.35], [-6.0, 11.25], [-6.53, 11.47], [-6.75, 12.0], [-6.65, 12.25], [-6.75, 12.5], [-6.53, 13.03]]]]}, "2018-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.03, 13.03], [-6.68, 13.18], [-6.53, 13.53], [-6.0, 13.75], [-5.75, 13.65], [-5.68, 13.68], [-5.53, 14.03], [-5.18, 14.18], [-5.03, 14.53], [-4.5, 14.75], [-3.97, 14.53], [-3.82, 14.18], [-3.47, 14.03], [-3.32, 13.68], [-3.25, 13.65], [-3.0, 13.75], [-2.47, 13.53], [-2.25, 13.0], [-2.35, 12.75], [-2.32, 12.68], [-2.25, 12.65], [-2.0, 12.75], [-1.75, 12.65], [-1.5, 12.75], [-0.97, 12.53], [-0.75, 12.0], [-0.97, 11.47], [-1.32, 11.32], [-1.47, 10.97], [-2.0, 10.75], [-2.5, 10.96], [-3.0, 10.75], [-3.25, 10.85], [-3.5, 10.75], [-4.03, 10.97], [-4.18, 11.32], [-4.25, 11.35], [-4.32, 11.32], [-4.47, 10.97], [-5.0, 10.75], [-5.25, 10.85], [-5.5, 10.75], [-5.75, 10.85], [-6.0, 10.75], [-6.25, 10.85], [-6.5, 10.75], [-7.03, 10.97], [-7.25, 11.5], [-7.04, 12.0], [-7.25, 12.5], [-7.03, 13.03]]]]}, "2018-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.03, 13.03], [-6.68, 13.18], [-6.53, 13.53], [-6.0, 13.75], [-5.75, 13.65], [-5.68, 13.68], [-5.53, 14.03], [-5.18, 14.18], [-5.03, 14.53], [-4.5, 14.75], [-3.97, 14.53], [-3.82, 14.18], [-3.47, 14.03], [-3.32, 13.68], [-3.25, 13.65], [-3.0, 13.75], [-2.47, 13.53], [-2.25, 13.0], [-2.35, 12.75], [-2.32, 12.68], [-2.25, 12.65], [-2.0, 12.75], [-1.75, 12.65], [-1.5, 12.75], [-0.97, 12.53], [-0.75, 12.0], [-0.97, 11.47], [-1.32, 11.32], [-1.47, 10.97], [-2.0, 10.75], [-2.5, 10.96], [-3.0, 10.75], [-3.25, 10.85], [-3.5, 10.75], [-4.03, 10.97], [-4.18, 11.32], [-4.25, 11.35], [-4.32, 11.32], [-4.47, 10.97], [-5.0, 10.75], [-5.25, 10.85], [-5.5, 10.75], [-5.75, 10.85], [-6.0, 10.75], [-6.25, 10.85], [-6.5, 10.75], [-7.03, 10.97], [-7.25, 11.5], [-7.04, 12.0], [-7.25, 12.5], [-7.03, 13.03]]]]}, "2018-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.03, 13.03], [-6.68, 13.18], [-6.53, 13.53], [-6.0, 13.75], [-5.75, 13.65], [-5.68, 13.68], [-5.53, 14.03], [-5.18, 14.18], [-5.03, 14.53], [-4.5, 14.75], [-3.97, 14.53], [-3.82, 14.18], [-3.47, 14.03], [-3.32, 13.68], [-3.25, 13.65], [-3.0, 13.75], [-2.47, 13.53], [-2.25, 13.0], [-2.35, 12.75], [-2.32, 12.68], [-2.25, 12.65], [-2.0, 12.75], [-1.75, 12.65], [-1.5, 12.75], [-0.97, 12.53], [-0.75, 12.0], [-0.97, 11.47], [-1.5, 11.25], [-1.75, 11.35], [-2.0, 11.25], [-2.25, 11.35], [-2.32, 11.32], [-2.47, 10.97], [-3.0, 10.75], [-3.25, 10.85], [-3.5, 10.75], [-4.03, 10.97], [-4.18, 11.32], [-4.25, 11.35], [-4.32, 11.32], [-4.47, 10.97], [-5.0, 10.75], [-5.25, 10.85], [-5.5, 10.75], [-5.75, 10.85], [-6.0, 10.75], [-6.25, 10.85], [-6.5, 10.75], [-7.03, 10.97], [-7.25, 11.5], [-7.04, 12.0], [-7.25, 12.5], [-7.03, 13.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.5197687047990485}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.4450846007661227}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [35.672743435580344, 35.34898903483668, 34.846936402482186, 35.24667159505918, 35.295713758423744, 35.616710123396786]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.85461067672492, 35.986276417012334, 36.02832755655385, 36.7335897395763, 36.58373333780196, 37.04385470173685]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9805351282105335, 2.0042807928232493, 2.078254390101039, 2.4006978173970484, 2.4710232331278927, 2.74223303542498]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.077966350636018, 2.11818327715946, 2.498498713861352, 3.2880346633585873, 3.0626949638030396, 3.5197687047990485]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2491501460289975, 1.2545470499971736, 1.2828815859536897, 1.4922175019727155, 1.5118774403803636, 1.6835475860461047]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2837118567780965, 1.3881829074159338, 1.3821941271331533, 1.8732182791269234, 1.7814467584369973, 2.104703283028631]}}