{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:16.444013", "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-Feb-17_to_2018-Feb-23_354.5_12.0"}, "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": 2018020001967}, "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": "February 17 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 23 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 156914.64435000008}, "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", "Ghana", "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": 12.0}, "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": 354.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "354.5\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": 359.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.53, 12.53], [-5.0, 12.75], [-4.75, 12.65], [-4.5, 12.75], [-3.97, 12.53], [-3.82, 12.18], [-3.75, 12.15], [-3.5, 12.25], [-2.97, 12.03], [-2.75, 11.5], [-2.85, 11.25], [-2.75, 11.0], [-2.97, 10.47], [-3.5, 10.25], [-4.0, 10.46], [-4.5, 10.25], [-5.03, 10.47], [-5.18, 10.82], [-5.53, 10.97], [-5.75, 11.5], [-5.65, 11.75], [-5.75, 12.0], [-5.53, 12.53]]]]}, "2018-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.25, 12.5], [-7.03, 13.03], [-6.5, 13.25], [-6.25, 13.15], [-6.0, 13.25], [-5.5, 13.04], [-5.18, 13.18], [-5.15, 13.25], [-5.25, 13.5], [-5.12, 13.8], [-5.53, 13.97], [-5.75, 14.5], [-5.53, 15.03], [-5.0, 15.25], [-4.75, 15.15], [-4.5, 15.25], [-3.97, 15.03], [-3.82, 14.68], [-3.47, 14.53], [-3.32, 14.18], [-3.25, 14.15], [-3.0, 14.25], [-2.75, 14.15], [-2.5, 14.25], [-1.97, 14.03], [-1.82, 13.68], [-1.47, 13.53], [-1.25, 13.0], [-1.37, 12.7], [-0.97, 12.53], [-0.75, 12.0], [-0.97, 11.47], [-1.5, 11.25], [-1.8, 11.38], [-1.85, 11.25], [-1.82, 11.18], [-1.47, 11.03], [-1.25, 10.5], [-1.47, 9.97], [-2.0, 9.75], [-2.53, 9.97], [-2.68, 10.32], [-3.0, 10.46], [-3.5, 10.25], [-4.0, 10.46], [-4.5, 10.25], [-4.75, 10.35], [-4.82, 10.32], [-4.97, 9.97], [-5.5, 9.75], [-6.03, 9.97], [-6.25, 10.5], [-6.15, 10.75], [-6.25, 11.0], [-6.15, 11.25], [-6.18, 11.32], [-6.53, 11.47], [-6.68, 11.82], [-7.03, 11.97], [-7.25, 12.5]], [[-3.65, 12.75], [-3.68, 12.82], [-3.75, 12.85], [-3.82, 12.82], [-3.85, 12.75], [-3.82, 12.68], [-3.7, 12.62], [-3.65, 12.75]]]]}, "2018-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.25, 12.5], [-7.03, 13.03], [-6.5, 13.25], [-6.25, 13.15], [-6.0, 13.25], [-5.5, 13.04], [-5.18, 13.18], [-5.15, 13.25], [-5.25, 13.5], [-5.12, 13.8], [-5.53, 13.97], [-5.75, 14.5], [-5.53, 15.03], [-5.0, 15.25], [-4.75, 15.15], [-4.5, 15.25], [-3.97, 15.03], [-3.82, 14.68], [-3.47, 14.53], [-3.32, 14.18], [-3.25, 14.15], [-3.0, 14.25], [-2.75, 14.15], [-2.68, 14.18], [-2.53, 14.53], [-2.0, 14.75], [-1.75, 14.65], [-1.68, 14.68], [-1.53, 15.03], [-1.0, 15.25], [-0.47, 15.03], [-0.25, 14.5], [-0.47, 13.97], [-0.82, 13.82], [-0.85, 13.75], [-0.75, 13.5], [-0.96, 13.0], [-0.75, 12.5], [-0.85, 12.25], [-0.75, 12.0], [-0.97, 11.47], [-1.32, 11.32], [-1.46, 11.0], [-1.25, 10.5], [-1.47, 9.97], [-2.0, 9.75], [-2.53, 9.97], [-2.68, 10.32], [-3.0, 10.46], [-3.5, 10.25], [-4.0, 10.46], [-4.5, 10.25], [-4.75, 10.35], [-4.82, 10.32], [-4.97, 9.97], [-5.5, 9.75], [-6.03, 9.97], [-6.25, 10.5], [-6.15, 10.75], [-6.25, 11.0], [-6.15, 11.25], [-6.18, 11.32], [-6.53, 11.47], [-6.68, 11.82], [-7.03, 11.97], [-7.25, 12.5]], [[-3.65, 12.75], [-3.68, 12.82], [-3.75, 12.85], [-3.82, 12.82], [-3.85, 12.75], [-3.82, 12.68], [-3.7, 12.62], [-3.65, 12.75]]]]}, "2018-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.25, 12.5], [-7.03, 13.03], [-6.5, 13.25], [-6.25, 13.15], [-6.0, 13.25], [-5.5, 13.04], [-5.18, 13.18], [-5.15, 13.25], [-5.25, 13.5], [-5.12, 13.8], [-5.53, 13.97], [-5.75, 14.5], [-5.53, 15.03], [-5.0, 15.25], [-4.75, 15.15], [-4.5, 15.25], [-3.97, 15.03], [-3.82, 14.68], [-3.47, 14.53], [-3.32, 14.18], [-3.25, 14.15], [-3.0, 14.25], [-2.75, 14.15], [-2.68, 14.18], [-2.53, 14.53], [-2.0, 14.75], [-1.75, 14.65], [-1.68, 14.68], [-1.53, 15.03], [-1.0, 15.25], [-0.75, 15.15], [-0.5, 15.25], [0.03, 15.03], [0.25, 14.5], [0.03, 13.97], [-0.32, 13.82], [-0.35, 13.75], [-0.25, 13.5], [-0.47, 12.97], [-0.87, 12.8], [-0.82, 12.68], [-0.47, 12.53], [-0.25, 12.0], [-0.47, 11.47], [-1.0, 11.25], [-1.25, 11.35], [-1.32, 11.32], [-1.46, 11.0], [-1.25, 10.5], [-1.47, 9.97], [-2.0, 9.75], [-2.53, 9.97], [-2.68, 10.32], [-3.0, 10.46], [-3.5, 10.25], [-4.0, 10.46], [-4.5, 10.25], [-4.75, 10.35], [-4.82, 10.32], [-4.97, 9.97], [-5.5, 9.75], [-6.03, 9.97], [-6.25, 10.5], [-6.15, 10.75], [-6.25, 11.0], [-6.15, 11.25], [-6.18, 11.32], [-6.53, 11.47], [-6.68, 11.82], [-7.03, 11.97], [-7.25, 12.5]], [[-3.65, 12.75], [-3.68, 12.82], [-3.75, 12.85], [-3.82, 12.82], [-3.85, 12.75], [-3.82, 12.68], [-3.7, 12.62], [-3.65, 12.75]]]]}, "2018-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.03, 11.47], [-6.25, 12.0], [-6.03, 12.53], [-5.5, 12.75], [-4.97, 12.53], [-4.75, 12.0], [-4.97, 11.47], [-5.5, 11.25], [-6.03, 11.47]]], [[[-3.0, 12.75], [-2.75, 12.65], [-2.68, 12.68], [-2.65, 12.75], [-2.75, 13.0], [-2.54, 13.5], [-2.75, 14.0], [-2.53, 14.53], [-2.0, 14.75], [-1.75, 14.65], [-1.68, 14.68], [-1.53, 15.03], [-1.0, 15.25], [-0.75, 15.15], [-0.5, 15.25], [0.03, 15.03], [0.25, 14.5], [0.03, 13.97], [-0.32, 13.82], [-0.35, 13.75], [-0.25, 13.5], [-0.47, 12.97], [-0.87, 12.8], [-0.82, 12.68], [-0.47, 12.53], [-0.25, 12.0], [-0.47, 11.47], [-1.0, 11.25], [-1.25, 11.35], [-1.32, 11.32], [-1.47, 10.97], [-2.0, 10.75], [-2.25, 10.85], [-2.5, 10.75], [-2.75, 10.85], [-3.0, 10.75], [-3.53, 10.97], [-3.75, 11.5], [-3.65, 11.75], [-3.75, 12.0], [-3.53, 12.53], [-3.0, 12.75]]]]}, "2018-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.03, 11.47], [-6.25, 12.0], [-6.03, 12.53], [-5.5, 12.75], [-4.97, 12.53], [-4.75, 12.0], [-4.97, 11.47], [-5.5, 11.25], [-6.03, 11.47]]], [[[-3.0, 12.75], [-2.75, 12.65], [-2.68, 12.68], [-2.65, 12.75], [-2.75, 13.0], [-2.54, 13.5], [-2.75, 14.0], [-2.53, 14.53], [-2.0, 14.75], [-1.75, 14.65], [-1.68, 14.68], [-1.53, 15.03], [-1.0, 15.25], [-0.75, 15.15], [-0.5, 15.25], [0.03, 15.03], [0.25, 14.5], [0.03, 13.97], [-0.32, 13.82], [-0.35, 13.75], [-0.25, 13.5], [-0.47, 12.97], [-0.87, 12.8], [-0.82, 12.68], [-0.47, 12.53], [-0.25, 12.0], [-0.47, 11.47], [-1.0, 11.25], [-1.25, 11.35], [-1.32, 11.32], [-1.47, 10.97], [-2.0, 10.75], [-2.25, 10.85], [-2.5, 10.75], [-2.75, 10.85], [-3.0, 10.75], [-3.53, 10.97], [-3.75, 11.5], [-3.65, 11.75], [-3.75, 12.0], [-3.53, 12.53], [-3.0, 12.75]]]]}, "2018-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.03, 11.47], [-6.25, 12.0], [-6.03, 12.53], [-5.5, 12.75], [-4.97, 12.53], [-4.75, 12.0], [-4.97, 11.47], [-5.5, 11.25], [-6.03, 11.47]]], [[[-3.0, 12.75], [-2.75, 12.65], [-2.68, 12.68], [-2.65, 12.75], [-2.75, 13.0], [-2.54, 13.5], [-2.75, 14.0], [-2.53, 14.53], [-2.0, 14.75], [-1.75, 14.65], [-1.68, 14.68], [-1.53, 15.03], [-1.0, 15.25], [-0.75, 15.15], [-0.5, 15.25], [0.03, 15.03], [0.25, 14.5], [0.03, 13.97], [-0.32, 13.82], [-0.35, 13.75], [-0.25, 13.5], [-0.47, 12.97], [-0.87, 12.8], [-0.82, 12.68], [-0.47, 12.53], [-0.25, 12.0], [-0.47, 11.47], [-1.0, 11.25], [-1.25, 11.35], [-1.32, 11.32], [-1.47, 10.97], [-2.0, 10.75], [-2.25, 10.85], [-2.5, 10.75], [-2.75, 10.85], [-3.0, 10.75], [-3.53, 10.97], [-3.75, 11.5], [-3.65, 11.75], [-3.75, 12.0], [-3.53, 12.53], [-3.0, 12.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.230122913143646}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.2207367328247334}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.410532387291596, 31.176217102210956, 31.66792502771642, 32.38204374104822, 31.26753338364341, 31.733423834240114, 32.316285658852564]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.907855322682167, 32.32681837692286, 32.9237857690444, 33.86097327851479, 32.56184805657972, 33.25874303358927, 33.42475606128329]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.4035251735822385, 2.7601779539398743, 3.1805668032411893, 3.8330711069057792, 2.7660626499417074, 3.0629185387200013, 3.5240550750419914]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.8015120766240216, 3.629375776713573, 4.558605668910843, 5.230122913143646, 3.199563890929312, 3.8907229509655394, 4.808286869502751]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3783120874109573, 1.4776327337881405, 1.7084158203691338, 2.027617340854151, 1.401794020992705, 1.5754565702594763, 1.8242252793521432]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5945350206635205, 1.83459201561967, 2.345468630807837, 2.5327663087775156, 1.661904712669327, 1.8233095905293781, 2.1782715132240926]}}