{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:08.588511", "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": "2023-Jun-28_to_2023-Jul-03_12.0_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": 2023060002915}, "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": "June 28 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 03 2023"}, "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": 56512.35064350389}, "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": ["Niger"]}, "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": 12.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "12.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 11.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 13.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[10.97, 17.03], [11.5, 17.25], [11.75, 17.15], [12.0, 17.25], [12.25, 17.15], [12.5, 17.25], [12.75, 17.15], [13.0, 17.25], [13.53, 17.03], [13.68, 16.68], [14.03, 16.53], [14.25, 16.0], [14.15, 15.75], [14.25, 15.5], [14.03, 14.97], [13.5, 14.75], [13.25, 14.85], [13.18, 14.82], [13.03, 14.47], [12.5, 14.25], [12.25, 14.35], [12.0, 14.25], [11.75, 14.35], [11.5, 14.25], [10.97, 14.47], [10.82, 14.82], [10.47, 14.97], [10.25, 15.5], [10.35, 15.75], [10.25, 16.0], [10.47, 16.53], [10.82, 16.68], [10.97, 17.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Western-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, 17.03], [12.0, 17.25], [12.53, 17.03], [12.75, 16.5], [12.53, 15.97], [12.0, 15.75], [11.47, 15.97], [11.25, 16.5], [11.47, 17.03]]]]}, "2023-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, 17.03], [12.0, 17.25], [12.53, 17.03], [12.75, 16.5], [12.53, 15.97], [12.0, 15.75], [11.47, 15.97], [11.25, 16.5], [11.47, 17.03]]]]}, "2023-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.25, 16.0], [10.47, 16.53], [10.82, 16.68], [10.97, 17.03], [11.5, 17.25], [11.75, 17.15], [12.0, 17.25], [12.25, 17.15], [12.5, 17.25], [12.75, 17.15], [13.0, 17.25], [13.53, 17.03], [13.68, 16.68], [14.03, 16.53], [14.25, 16.0], [14.15, 15.75], [14.25, 15.5], [14.03, 14.97], [13.5, 14.75], [13.25, 14.85], [13.18, 14.82], [13.03, 14.47], [12.5, 14.25], [12.25, 14.35], [12.0, 14.25], [11.75, 14.35], [11.5, 14.25], [10.97, 14.47], [10.82, 14.82], [10.47, 14.97], [10.25, 15.5], [10.35, 15.75], [10.25, 16.0]]]]}, "2023-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.25, 16.0], [10.47, 16.53], [10.82, 16.68], [10.97, 17.03], [11.5, 17.25], [11.75, 17.15], [12.0, 17.25], [12.25, 17.15], [12.5, 17.25], [12.75, 17.15], [13.0, 17.25], [13.53, 17.03], [13.68, 16.68], [14.03, 16.53], [14.25, 16.0], [14.15, 15.75], [14.25, 15.5], [14.03, 14.97], [13.5, 14.75], [13.25, 14.85], [13.18, 14.82], [13.03, 14.47], [12.5, 14.25], [12.25, 14.35], [12.0, 14.25], [11.75, 14.35], [11.5, 14.25], [10.97, 14.47], [10.82, 14.82], [10.47, 14.97], [10.25, 15.5], [10.35, 15.75], [10.25, 16.0]]]]}, "2023-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.25, 16.0], [10.47, 16.53], [10.82, 16.68], [10.97, 17.03], [11.5, 17.25], [11.75, 17.15], [12.0, 17.25], [12.25, 17.15], [12.5, 17.25], [12.75, 17.15], [13.0, 17.25], [13.53, 17.03], [13.68, 16.68], [14.03, 16.53], [14.25, 16.0], [14.15, 15.75], [14.25, 15.5], [14.03, 14.97], [13.5, 14.75], [13.25, 14.85], [13.18, 14.82], [13.03, 14.47], [12.5, 14.25], [12.25, 14.35], [12.0, 14.25], [11.75, 14.35], [11.5, 14.25], [10.97, 14.47], [10.82, 14.82], [10.47, 14.97], [10.25, 15.5], [10.35, 15.75], [10.25, 16.0]]]]}, "2023-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.25, 16.0], [10.47, 16.53], [11.0, 16.75], [11.25, 16.65], [11.5, 16.75], [11.75, 16.65], [12.0, 16.75], [12.25, 16.65], [12.5, 16.75], [12.75, 16.65], [13.0, 16.75], [13.25, 16.65], [13.5, 16.75], [14.03, 16.53], [14.25, 16.0], [14.15, 15.75], [14.25, 15.5], [14.03, 14.97], [13.5, 14.75], [13.25, 14.85], [13.18, 14.82], [13.03, 14.47], [12.5, 14.25], [12.25, 14.35], [12.0, 14.25], [11.75, 14.35], [11.5, 14.25], [10.97, 14.47], [10.82, 14.82], [10.47, 14.97], [10.25, 15.5], [10.35, 15.75], [10.25, 16.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.020013024177956}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.6134020917970724}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.97185304048077, 33.863234531015564, 34.41669922915554, 34.549577223077165, 34.417039952317566, 34.438365263379524]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.97185304048077, 33.863234531015564, 34.86342655666368, 35.25351733436946, 34.9615282724439, 34.90913490616265]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.5250613555752466, 1.415278956667919, 1.607020761735884, 1.7092582042524453, 1.5767073552053956, 1.565644958537295]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.5250613555752466, 1.415278956667919, 1.8969880766800884, 2.020013024177956, 1.8860810225035607, 1.8663350854423015]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3914622928217897, 1.3216312616532, 1.498881102119329, 1.5008318343493574, 1.3581483551520084, 1.3262104405536985]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3914622928217897, 1.3216312616532, 1.8035499842150302, 1.7891037661704678, 1.6413594985341917, 1.6268414023262074]}}