{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:36.666652", "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-Apr-05_to_2023-Apr-11_18.0_15.0"}, "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": 2023040001484}, "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 05 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 11 2023"}, "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": 143646.88819126948}, "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": ["Chad"]}, "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": 15.0}, "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": 18.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "18.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 22.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[23.03, 12.53], [23.25, 12.0], [23.03, 11.47], [22.5, 11.25], [22.25, 11.35], [22.0, 11.25], [21.47, 11.47], [21.32, 11.82], [20.97, 11.97], [20.82, 12.32], [20.75, 12.35], [20.5, 12.25], [20.25, 12.35], [20.18, 12.32], [20.03, 11.97], [19.68, 11.82], [19.53, 11.47], [19.0, 11.25], [18.47, 11.47], [18.25, 12.0], [18.38, 12.3], [17.97, 12.47], [17.82, 12.82], [17.75, 12.85], [17.5, 12.75], [17.25, 12.85], [17.0, 12.75], [16.75, 12.85], [16.5, 12.75], [15.97, 12.97], [15.75, 13.5], [15.97, 14.03], [16.32, 14.18], [16.35, 14.25], [16.25, 14.5], [16.35, 14.75], [16.25, 15.0], [16.35, 15.25], [16.32, 15.32], [15.97, 15.47], [15.75, 16.0], [15.85, 16.25], [15.75, 16.5], [15.97, 17.03], [16.5, 17.25], [16.75, 17.15], [16.82, 17.18], [16.97, 17.53], [17.5, 17.75], [17.75, 17.65], [18.0, 17.75], [18.25, 17.65], [18.5, 17.75], [19.03, 17.53], [19.25, 17.0], [19.15, 16.75], [19.25, 16.5], [19.03, 15.97], [18.68, 15.82], [18.65, 15.75], [18.75, 15.5], [18.65, 15.25], [18.68, 15.18], [18.75, 15.15], [19.0, 15.25], [19.53, 15.03], [19.68, 14.68], [20.03, 14.53], [20.18, 14.18], [20.53, 14.03], [20.68, 13.68], [20.75, 13.65], [21.0, 13.75], [21.53, 13.53], [21.68, 13.18], [22.03, 13.03], [22.18, 12.68], [22.25, 12.65], [22.5, 12.75], [23.03, 12.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.97, 16.47], [16.75, 17.0], [16.97, 17.53], [17.5, 17.75], [17.75, 17.65], [18.0, 17.75], [18.53, 17.53], [18.75, 17.0], [18.65, 16.75], [18.75, 16.5], [18.65, 16.25], [18.75, 16.0], [18.65, 15.75], [18.75, 15.5], [18.65, 15.25], [18.68, 15.18], [19.03, 15.03], [19.25, 14.5], [19.03, 13.97], [18.5, 13.75], [17.97, 13.97], [17.82, 14.32], [17.47, 14.47], [17.25, 15.0], [17.35, 15.25], [17.25, 15.5], [17.35, 15.75], [17.25, 16.0], [17.35, 16.25], [17.32, 16.32], [16.97, 16.47]]]]}, "2023-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.35, 14.25], [16.25, 14.5], [16.47, 15.03], [16.82, 15.18], [16.97, 15.53], [17.32, 15.68], [17.35, 15.75], [17.25, 16.0], [17.35, 16.25], [17.32, 16.32], [16.97, 16.47], [16.75, 17.0], [16.97, 17.53], [17.5, 17.75], [17.75, 17.65], [18.0, 17.75], [18.53, 17.53], [18.75, 17.0], [18.65, 16.75], [18.75, 16.5], [18.65, 16.25], [18.75, 16.0], [18.65, 15.75], [18.75, 15.5], [18.65, 15.25], [18.68, 15.18], [19.03, 15.03], [19.25, 14.5], [19.03, 13.97], [18.5, 13.75], [18.25, 13.85], [18.18, 13.82], [18.03, 13.47], [17.68, 13.32], [17.53, 12.97], [17.0, 12.75], [16.75, 12.85], [16.5, 12.75], [15.97, 12.97], [15.75, 13.5], [15.97, 14.03], [16.32, 14.18], [16.35, 14.25]]]]}, "2023-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.75, 16.5], [15.97, 17.03], [16.5, 17.25], [16.75, 17.15], [16.82, 17.18], [16.97, 17.53], [17.5, 17.75], [17.75, 17.65], [18.0, 17.75], [18.25, 17.65], [18.5, 17.75], [19.03, 17.53], [19.25, 17.0], [19.15, 16.75], [19.25, 16.5], [19.03, 15.97], [18.68, 15.82], [18.65, 15.75], [18.75, 15.5], [18.65, 15.25], [18.68, 15.18], [19.03, 15.03], [19.25, 14.5], [19.03, 13.97], [18.5, 13.75], [18.25, 13.85], [18.18, 13.82], [18.03, 13.47], [17.68, 13.32], [17.53, 12.97], [17.0, 12.75], [16.75, 12.85], [16.5, 12.75], [15.97, 12.97], [15.75, 13.5], [15.97, 14.03], [16.32, 14.18], [16.35, 14.25], [16.25, 14.5], [16.35, 14.75], [16.25, 15.0], [16.35, 15.25], [16.32, 15.32], [15.97, 15.47], [15.75, 16.0], [15.85, 16.25], [15.75, 16.5]]]]}, "2023-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 11.47], [21.25, 12.0], [21.47, 12.53], [22.0, 12.75], [22.25, 12.65], [22.5, 12.75], [23.03, 12.53], [23.25, 12.0], [23.03, 11.47], [22.5, 11.25], [22.25, 11.35], [22.0, 11.25], [21.47, 11.47]]], [[[15.97, 17.03], [16.5, 17.25], [16.75, 17.15], [16.82, 17.18], [16.97, 17.53], [17.5, 17.75], [17.75, 17.65], [18.0, 17.75], [18.25, 17.65], [18.5, 17.75], [19.03, 17.53], [19.25, 17.0], [19.15, 16.75], [19.25, 16.5], [19.03, 15.97], [18.68, 15.82], [18.65, 15.75], [18.75, 15.5], [18.65, 15.25], [18.68, 15.18], [18.75, 15.15], [19.0, 15.25], [19.53, 15.03], [19.68, 14.68], [20.03, 14.53], [20.25, 14.0], [20.03, 13.47], [19.5, 13.25], [20.03, 13.03], [20.25, 12.5], [20.03, 11.97], [19.68, 11.82], [19.53, 11.47], [19.0, 11.25], [18.47, 11.47], [18.25, 12.0], [18.47, 12.53], [18.82, 12.68], [18.93, 12.93], [18.5, 12.75], [17.97, 12.97], [17.82, 13.32], [17.75, 13.35], [17.68, 13.32], [17.53, 12.97], [17.0, 12.75], [16.75, 12.85], [16.5, 12.75], [15.97, 12.97], [15.75, 13.5], [15.97, 14.03], [16.32, 14.18], [16.35, 14.25], [16.25, 14.5], [16.35, 14.75], [16.25, 15.0], [16.35, 15.25], [16.32, 15.32], [15.97, 15.47], [15.75, 16.0], [15.85, 16.25], [15.75, 16.5], [15.97, 17.03]], [[19.25, 13.35], [19.18, 13.32], [19.07, 13.07], [19.5, 13.25], [19.25, 13.35]]]]}, "2023-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.75, 16.5], [15.97, 17.03], [16.5, 17.25], [16.75, 17.15], [17.0, 17.25], [17.25, 17.15], [17.32, 17.18], [17.47, 17.53], [18.0, 17.75], [18.25, 17.65], [18.5, 17.75], [19.03, 17.53], [19.25, 17.0], [19.15, 16.75], [19.25, 16.5], [19.03, 15.97], [18.68, 15.82], [18.65, 15.75], [18.75, 15.5], [18.65, 15.25], [18.68, 15.18], [18.75, 15.15], [19.0, 15.25], [19.53, 15.03], [19.68, 14.68], [20.03, 14.53], [20.18, 14.18], [20.53, 14.03], [20.68, 13.68], [20.75, 13.65], [21.0, 13.75], [21.53, 13.53], [21.68, 13.18], [22.03, 13.03], [22.18, 12.68], [22.25, 12.65], [22.5, 12.75], [23.03, 12.53], [23.25, 12.0], [23.03, 11.47], [22.5, 11.25], [22.25, 11.35], [22.0, 11.25], [21.47, 11.47], [21.32, 11.82], [20.97, 11.97], [20.82, 12.32], [20.75, 12.35], [20.5, 12.25], [20.25, 12.35], [20.18, 12.32], [20.03, 11.97], [19.68, 11.82], [19.53, 11.47], [19.0, 11.25], [18.47, 11.47], [18.25, 12.0], [18.38, 12.3], [17.97, 12.47], [17.82, 12.82], [17.75, 12.85], [17.5, 12.75], [17.25, 12.85], [17.0, 12.75], [16.75, 12.85], [16.5, 12.75], [15.97, 12.97], [15.75, 13.5], [15.97, 14.03], [16.32, 14.18], [16.35, 14.25], [16.25, 14.5], [16.35, 14.75], [16.25, 15.0], [16.35, 15.25], [16.32, 15.32], [15.97, 15.47], [15.75, 16.0], [15.85, 16.25], [15.75, 16.5]]]]}, "2023-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.5, 12.75], [15.97, 12.97], [15.75, 13.5], [15.97, 14.03], [16.5, 14.25], [16.75, 14.15], [16.82, 14.18], [16.97, 14.53], [17.38, 14.7], [17.25, 15.0], [17.47, 15.53], [18.0, 15.75], [18.53, 15.53], [18.68, 15.18], [18.75, 15.15], [19.0, 15.25], [19.53, 15.03], [19.68, 14.68], [20.03, 14.53], [20.18, 14.18], [20.53, 14.03], [20.68, 13.68], [20.75, 13.65], [21.0, 13.75], [21.53, 13.53], [21.68, 13.18], [22.03, 13.03], [22.18, 12.68], [22.25, 12.65], [22.5, 12.75], [23.03, 12.53], [23.25, 12.0], [23.03, 11.47], [22.5, 11.25], [22.25, 11.35], [22.0, 11.25], [21.47, 11.47], [21.32, 11.82], [20.97, 11.97], [20.82, 12.32], [20.75, 12.35], [20.5, 12.25], [20.25, 12.35], [20.18, 12.32], [20.03, 11.97], [19.68, 11.82], [19.53, 11.47], [19.0, 11.25], [18.47, 11.47], [18.25, 12.0], [18.38, 12.3], [17.97, 12.47], [17.82, 12.82], [17.75, 12.85], [17.5, 12.75], [17.25, 12.85], [17.0, 12.75], [16.75, 12.85], [16.5, 12.75]]]]}, "2023-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.47, 14.53], [18.0, 14.75], [18.25, 14.65], [18.5, 14.75], [18.75, 14.65], [19.0, 14.75], [19.25, 14.65], [19.5, 14.75], [20.03, 14.53], [20.18, 14.18], [20.53, 14.03], [20.68, 13.68], [20.75, 13.65], [21.0, 13.75], [21.53, 13.53], [21.68, 13.18], [22.03, 13.03], [22.18, 12.68], [22.25, 12.65], [22.5, 12.75], [23.03, 12.53], [23.25, 12.0], [23.03, 11.47], [22.5, 11.25], [22.25, 11.35], [22.0, 11.25], [21.47, 11.47], [21.32, 11.82], [20.97, 11.97], [20.82, 12.32], [20.75, 12.35], [20.5, 12.25], [20.25, 12.35], [20.18, 12.32], [20.03, 11.97], [19.68, 11.82], [19.53, 11.47], [19.0, 11.25], [18.47, 11.47], [18.25, 12.0], [18.38, 12.3], [17.97, 12.47], [17.82, 12.82], [17.75, 12.85], [17.5, 12.75], [16.97, 12.97], [16.75, 13.5], [16.97, 14.03], [17.32, 14.18], [17.47, 14.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.480929200703315}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.28624518795746}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [34.19733513157479, 34.847361873895125, 34.52993217795222, 35.126394991046766, 35.26612186479963, 35.19092623228437, 35.458076537474994]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.257752139163756, 35.80685791236942, 35.84306187834818, 36.6955878552252, 36.852717491682995, 36.190280769985804, 36.27433885800173]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.7301205605915504, 3.5679461403301125, 3.6403366692250403, 3.7343434688003168, 3.3984737704464556, 2.453332593800848, 2.550213671191633]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.959097899922483, 3.8724475129328653, 4.123373860235176, 4.861717756582493, 5.480929200703315, 3.1876226605726288, 2.9416710837065807]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5247137457877316, 1.4762817534217194, 1.4022287065674588, 1.5450962933974945, 1.540951070261025, 1.4009948509116934, 1.619820411927475]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.569995553421435, 1.6372623464873237, 1.5197760498486785, 1.859950686425552, 1.9755249806998025, 2.070997445398081, 2.1496833919846097]}}