{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:00.480715", "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-Oct-03_to_2021-Oct-09_353.0_16.0"}, "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": 2021100001419}, "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 03 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 09 2021"}, "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": 59133.31934543411}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": 16.0}, "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": 353.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 351.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 355.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-7.0, 15.25], [-7.25, 15.35], [-7.5, 15.25], [-7.75, 15.35], [-8.0, 15.25], [-8.53, 15.47], [-8.75, 16.0], [-8.62, 16.3], [-9.03, 16.47], [-9.25, 17.0], [-9.03, 17.53], [-8.5, 17.75], [-8.25, 17.65], [-8.0, 17.75], [-7.75, 17.65], [-7.68, 17.68], [-7.65, 17.75], [-7.65, 17.76], [-7.75, 18.0], [-7.53, 18.53], [-7.0, 18.75], [-6.47, 18.53], [-6.32, 18.18], [-6.25, 18.15], [-6.0, 18.25], [-5.75, 18.15], [-5.5, 18.25], [-5.25, 18.15], [-5.0, 18.25], [-4.47, 18.03], [-4.25, 17.5], [-4.35, 17.25], [-4.25, 17.0], [-4.47, 16.47], [-5.0, 16.25], [-5.25, 16.35], [-5.5, 16.25], [-5.75, 16.35], [-5.82, 16.32], [-5.97, 15.97], [-6.32, 15.82], [-6.47, 15.47], [-7.0, 15.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.5, 17.25], [-7.25, 17.15], [-7.0, 17.25], [-6.470000000000027, 17.03], [-6.25, 16.5], [-6.350000000000023, 16.25], 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[-8.75, 16.0], [-8.529999999999973, 16.53], [-8.180000000000007, 16.68], [-8.029999999999973, 17.03]]]]}, "2021-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.029999999999973, 17.03], [-7.680000000000007, 17.18], [-7.649999999999977, 17.25], [-7.75, 17.5], [-7.649999999999977, 17.75], [-7.75, 18.0], [-7.529999999999973, 18.53], [-7.0, 18.75], [-6.470000000000027, 18.53], [-6.25, 18.0], [-6.350000000000023, 17.75], [-6.25, 17.5], [-6.350000000000023, 17.25], [-6.25, 17.0], [-6.350000000000023, 16.75], [-6.25, 16.5], [-6.350000000000023, 16.25], [-6.25, 16.0], [-6.470000000000027, 15.47], [-7.0, 15.25], [-7.25, 15.35], [-7.5, 15.25], [-7.75, 15.35], [-8.0, 15.25], [-8.529999999999973, 15.47], [-8.75, 16.0], [-8.529999999999973, 16.53], [-8.180000000000007, 16.68], [-8.029999999999973, 17.03]]]]}, "2021-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.75, 17.5], [-7.649999999999977, 17.75], [-7.75, 18.0], [-7.529999999999973, 18.53], 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evolution of mean t2m anomalies.", "value": [1.8877491678856682, 2.3343245578130256, 2.070064168826697, 2.0750853050859677, 2.7225316672050863, 2.2006819954832295, 2.004132439789174]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.2313523468752123, 2.766639455980396, 2.5891599177555804, 2.3371554384884234, 3.1855187782959433, 2.847953377786041, 2.126054049870504]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.302120195142313, 1.524122000796906, 1.2426112676455852, 1.2373623057169731, 1.54334187543578, 1.1945009746263802, 1.0247107861852836]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.528350216203274, 1.8120825723874707, 1.490312404998793, 1.3849911970761661, 1.8599409880292543, 1.4371685371882834, 1.0824539413687002]}}