{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:24.642009", "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-Oct-22_to_2018-Oct-25_355.0_16.5"}, "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": 2018100002409}, "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": "October 22 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 25 2018"}, "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": 76512.68143097797}, "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": ["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": 16.5}, "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": 355.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "355.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 356.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.0, 17.25], [-4.47, 17.03], [-4.25, 16.5], [-4.47, 15.97], [-5.0, 15.75], [-5.53, 15.97], [-5.75, 16.5], [-5.53, 17.03], [-5.0, 17.25]]]]}, "2018-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.15, 18.25], [-7.25, 18.5], [-7.03, 19.03], [-6.68, 19.18], [-6.65, 19.25], [-6.68, 19.32], [-6.75, 19.35], [-7.0, 19.25], [-7.53, 19.47], [-7.75, 20.0], [-7.53, 20.53], [-7.0, 20.75], [-6.75, 20.65], [-6.5, 20.75], [-5.97, 20.53], [-5.82, 20.18], [-5.47, 20.03], [-5.32, 19.68], [-4.97, 19.53], [-4.75, 19.0], [-4.85, 18.75], [-4.82, 18.68], [-4.47, 18.53], [-4.25, 18.0], [-4.35, 17.75], [-4.32, 17.68], [-4.25, 17.65], [-4.0, 17.75], [-3.47, 17.53], [-3.25, 17.0], [-3.35, 16.75], [-3.25, 16.5], [-3.47, 15.97], [-4.0, 15.75], [-4.25, 15.85], [-4.5, 15.75], [-4.75, 15.85], [-5.0, 15.75], [-5.25, 15.85], [-5.5, 15.75], [-5.75, 15.85], [-6.0, 15.75], [-6.53, 15.97], [-6.75, 16.5], [-6.65, 16.75], [-6.68, 16.82], [-7.03, 16.97], [-7.25, 17.5], [-7.15, 17.75], [-7.25, 18.0], [-7.15, 18.25]]]]}, "2018-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.15, 18.25], [-7.25, 18.5], [-7.03, 19.03], [-6.68, 19.18], [-6.65, 19.25], [-6.68, 19.32], [-6.75, 19.35], [-7.0, 19.25], [-7.53, 19.47], [-7.75, 20.0], [-7.53, 20.53], [-7.0, 20.75], [-6.75, 20.65], [-6.5, 20.75], [-5.97, 20.53], [-5.82, 20.18], [-5.47, 20.03], [-5.32, 19.68], [-4.97, 19.53], [-4.75, 19.0], [-4.85, 18.75], [-4.82, 18.68], [-4.47, 18.53], [-4.25, 18.0], [-4.35, 17.75], [-4.32, 17.68], [-4.25, 17.65], [-4.0, 17.75], [-3.47, 17.53], [-3.25, 17.0], [-3.35, 16.75], [-3.25, 16.5], [-3.47, 15.97], [-4.0, 15.75], [-4.25, 15.85], [-4.5, 15.75], [-4.75, 15.85], [-5.0, 15.75], [-5.25, 15.85], [-5.5, 15.75], [-5.75, 15.85], [-6.0, 15.75], [-6.53, 15.97], [-6.75, 16.5], [-6.65, 16.75], [-6.68, 16.82], [-7.03, 16.97], [-7.25, 17.5], [-7.15, 17.75], [-7.25, 18.0], [-7.15, 18.25]]]]}, "2018-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.15, 18.25], [-7.25, 18.5], [-7.03, 19.03], [-6.68, 19.18], [-6.65, 19.25], [-6.68, 19.32], [-6.75, 19.35], [-7.0, 19.25], [-7.53, 19.47], [-7.75, 20.0], [-7.53, 20.53], [-7.0, 20.75], [-6.75, 20.65], [-6.5, 20.75], [-5.97, 20.53], [-5.82, 20.18], [-5.47, 20.03], [-5.32, 19.68], [-4.97, 19.53], [-4.75, 19.0], [-4.85, 18.75], [-4.82, 18.68], [-4.47, 18.53], [-4.25, 18.0], [-4.35, 17.75], [-4.32, 17.68], [-4.25, 17.65], [-4.0, 17.75], [-3.47, 17.53], [-3.25, 17.0], [-3.35, 16.75], [-3.25, 16.5], [-3.47, 15.97], [-4.0, 15.75], [-4.25, 15.85], [-4.5, 15.75], [-4.75, 15.85], [-5.0, 15.75], [-5.25, 15.85], [-5.5, 15.75], [-5.75, 15.85], [-6.0, 15.75], [-6.53, 15.97], [-6.75, 16.5], [-6.65, 16.75], [-6.68, 16.82], [-7.03, 16.97], [-7.25, 17.5], [-7.15, 17.75], [-7.25, 18.0], [-7.15, 18.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.439619708091527}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.7621165248152937}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [32.36436055460956, 31.613604983652124, 31.893196752472022, 31.392780569755075]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.36436055460956, 32.85901943964285, 33.61135904395002, 33.238859907313156]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.009977365739701, 2.6073790520476905, 3.0381814615811673, 2.6697174900122387]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.009977365739701, 3.092740121141958, 3.439619708091527, 2.9705162259085114]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2599580889984536, 1.3989776134345429, 1.6786558484328233, 1.5194234768812742]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2599580889984536, 1.5481256080304981, 2.2703367082651846, 1.9855423480563463]}}