{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:07.323085", "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": "2025-Aug-05_to_2025-Aug-12_6.0_24.0"}, "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": 2025080001443}, "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": "August 05 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 12 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 150313.8311844234}, "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": ["Algeria"]}, "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": 24.0}, "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": 6.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "6.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 2.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 8.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[7.75, 24.5], [7.65, 24.25], [7.68, 24.18], [8.03, 24.03], [8.18, 23.68], [8.53, 23.53], [8.75, 23.0], [8.65, 22.75], [8.75, 22.5], [8.53, 21.97], [8.0, 21.75], [7.47, 21.97], [7.32, 22.32], [7.07, 22.43], [7.25, 22.0], [7.15, 21.75], [7.25, 21.5], [7.15, 21.25], [7.25, 21.0], [7.15, 20.75], [7.25, 20.5], [7.03, 19.97], [6.5, 19.75], [6.25, 19.85], [6.0, 19.75], [5.47, 19.97], [5.32, 20.32], [4.97, 20.47], [4.82, 20.82], [4.47, 20.97], [4.25, 21.5], [4.38, 21.8], [4.25, 21.85], [4.0, 21.75], [3.47, 21.97], [3.25, 22.5], [3.38, 22.8], [3.25, 22.85], [3.0, 22.75], [2.47, 22.97], [2.32, 23.32], [1.97, 23.47], [1.75, 24.0], [1.97, 24.53], [2.5, 24.75], [2.75, 24.65], [3.0, 24.75], [3.25, 24.65], [3.32, 24.68], [3.47, 25.03], [4.0, 25.25], [4.25, 25.15], [4.32, 25.18], [4.47, 25.53], [4.82, 25.68], [4.85, 25.75], [4.75, 26.0], [4.97, 26.53], [5.5, 26.75], [6.03, 26.53], [6.18, 26.18], [6.25, 26.15], [6.5, 26.25], [7.03, 26.03], [7.25, 25.5], [7.15, 25.25], [7.18, 25.18], [7.53, 25.03], [7.75, 24.5]], [[6.75, 23.0], [6.63, 22.7], [6.93, 22.57], [6.75, 23.0]], [[6.85, 23.25], [6.82, 23.32], [6.75, 23.35], [6.68, 23.32], [6.65, 23.25], [6.75, 23.0], [6.85, 23.25]]]]}}, "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": {"2025-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.97, 23.53], [7.5, 23.75], [8.03, 23.53], [8.25, 23.0], [8.03, 22.47], [7.5, 22.25], [6.97, 22.47], [6.75, 23.0], [6.97, 23.53]]]]}, "2025-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.25, 21.5], [4.47, 22.03], [4.82, 22.18], [4.97, 22.53], [5.5, 22.75], [5.75, 22.65], [6.0, 22.75], [6.53, 22.53], [6.75, 22.0], [6.65, 21.75], [6.68, 21.68], [7.03, 21.53], [7.25, 21.0], [7.15, 20.75], [7.25, 20.5], [7.03, 19.97], [6.5, 19.75], [6.25, 19.85], [6.0, 19.75], [5.47, 19.97], [5.32, 20.32], [4.97, 20.47], [4.82, 20.82], [4.47, 20.97], [4.25, 21.5]]], [[[6.75, 23.0], [6.97, 23.53], [7.5, 23.75], [7.75, 23.65], [8.0, 23.75], [8.53, 23.53], [8.75, 23.0], [8.65, 22.75], [8.75, 22.5], [8.53, 21.97], [8.0, 21.75], [7.47, 21.97], [7.32, 22.32], [6.97, 22.47], [6.75, 23.0]]]]}, "2025-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.47, 20.97], [4.25, 21.5], [4.47, 22.03], [4.82, 22.18], [4.97, 22.53], [5.5, 22.75], [5.75, 22.65], [6.0, 22.75], [6.25, 22.65], [6.5, 22.75], [6.93, 22.57], [6.75, 23.0], [6.85, 23.25], [6.82, 23.32], [6.47, 23.47], [6.25, 24.0], [6.35, 24.25], [6.25, 24.5], [6.47, 25.03], [7.0, 25.25], [7.53, 25.03], [7.75, 24.5], [7.65, 24.25], [7.68, 24.18], [8.03, 24.03], [8.18, 23.68], [8.53, 23.53], [8.75, 23.0], [8.65, 22.75], [8.75, 22.5], [8.53, 21.97], [8.0, 21.75], [7.47, 21.97], [7.32, 22.32], [7.07, 22.43], [7.25, 22.0], [7.15, 21.75], [7.25, 21.5], [7.15, 21.25], [7.25, 21.0], [7.15, 20.75], [7.25, 20.5], [7.03, 19.97], [6.5, 19.75], [6.25, 19.85], [6.0, 19.75], [5.47, 19.97], [5.32, 20.32], [4.97, 20.47], [4.82, 20.82], [4.47, 20.97]]]]}, "2025-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 23.47], [1.75, 24.0], [1.97, 24.53], [2.5, 24.75], [2.75, 24.65], [3.0, 24.75], [3.25, 24.65], [3.32, 24.68], [3.47, 25.03], [4.0, 25.25], [4.25, 25.15], [4.32, 25.18], [4.47, 25.53], [4.82, 25.68], [4.97, 26.03], [5.5, 26.25], [5.75, 26.15], [6.0, 26.25], [6.25, 26.15], [6.5, 26.25], [7.03, 26.03], [7.25, 25.5], [7.15, 25.25], [7.18, 25.18], [7.53, 25.03], [7.75, 24.5], [7.65, 24.25], [7.68, 24.18], [8.03, 24.03], [8.18, 23.68], [8.53, 23.53], [8.75, 23.0], [8.65, 22.75], [8.75, 22.5], [8.53, 21.97], [8.0, 21.75], [7.47, 21.97], [7.32, 22.32], [7.07, 22.43], [7.25, 22.0], [7.15, 21.75], [7.25, 21.5], [7.15, 21.25], [7.25, 21.0], [7.15, 20.75], [7.25, 20.5], [7.03, 19.97], [6.5, 19.75], [6.25, 19.85], [6.0, 19.75], [5.47, 19.97], [5.32, 20.32], [4.97, 20.47], [4.82, 20.82], [4.47, 20.97], [4.25, 21.5], [4.38, 21.8], [4.25, 21.85], [4.0, 21.75], [3.47, 21.97], [3.25, 22.5], [3.38, 22.8], [3.25, 22.85], [3.0, 22.75], [2.47, 22.97], [2.32, 23.32], [1.97, 23.47]], [[6.82, 23.32], [6.75, 23.35], [6.63, 23.3], [6.75, 23.0], [6.85, 23.25], [6.82, 23.32]], [[6.63, 22.7], [6.93, 22.57], [6.75, 23.0], [6.63, 22.7]]]]}, "2025-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 23.47], [1.75, 24.0], [1.97, 24.53], [2.5, 24.75], [2.75, 24.65], [3.0, 24.75], [3.25, 24.65], [3.32, 24.68], [3.47, 25.03], [4.0, 25.25], [4.25, 25.15], [4.32, 25.18], [4.47, 25.53], [4.82, 25.68], [4.85, 25.75], [4.75, 26.0], [4.97, 26.53], [5.5, 26.75], [6.03, 26.53], [6.18, 26.18], [6.25, 26.15], [6.5, 26.25], [7.03, 26.03], [7.25, 25.5], [7.15, 25.25], [7.18, 25.18], [7.53, 25.03], [7.75, 24.5], [7.65, 24.25], [7.68, 24.18], [8.03, 24.03], [8.25, 23.5], [8.15, 23.25], [8.25, 23.0], [8.03, 22.47], [7.5, 22.25], [7.07, 22.43], [7.25, 22.0], [7.15, 21.75], [7.25, 21.5], [7.03, 20.97], [6.5, 20.75], [5.97, 20.97], [5.82, 21.32], [5.75, 21.35], [5.68, 21.32], [5.53, 20.97], [5.0, 20.75], [4.47, 20.97], [4.25, 21.5], [4.38, 21.8], [4.25, 21.85], [4.0, 21.75], [3.47, 21.97], [3.25, 22.5], [3.38, 22.8], [3.25, 22.85], [3.0, 22.75], [2.47, 22.97], [2.32, 23.32], [1.97, 23.47]], [[6.93, 22.57], [6.75, 23.0], [6.63, 22.7], [6.93, 22.57]], [[6.85, 23.25], [6.82, 23.32], [6.75, 23.35], [6.68, 23.32], [6.65, 23.25], [6.75, 23.0], [6.85, 23.25]]]]}, "2025-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 23.47], [1.75, 24.0], [1.97, 24.53], [2.5, 24.75], [2.75, 24.65], [3.0, 24.75], [3.25, 24.65], [3.32, 24.68], [3.47, 25.03], [4.0, 25.25], [4.25, 25.15], [4.32, 25.18], [4.47, 25.53], [4.82, 25.68], [4.85, 25.75], [4.75, 26.0], [4.97, 26.53], [5.5, 26.75], [6.03, 26.53], [6.18, 26.18], [6.25, 26.15], [6.5, 26.25], [7.03, 26.03], [7.25, 25.5], [7.15, 25.25], [7.25, 25.0], [7.15, 24.75], [7.25, 24.5], [7.15, 24.25], [7.25, 24.0], [7.03, 23.47], [6.68, 23.32], [6.65, 23.25], [6.75, 23.0], [6.53, 22.47], [6.18, 22.32], [6.15, 22.25], [6.25, 22.0], [6.03, 21.47], [5.68, 21.32], [5.53, 20.97], [5.0, 20.75], [4.47, 20.97], [4.25, 21.5], [4.38, 21.8], [4.25, 21.85], [4.0, 21.75], [3.47, 21.97], [3.25, 22.5], [3.38, 22.8], [3.25, 22.85], [3.0, 22.75], [2.47, 22.97], [2.32, 23.32], [1.97, 23.47]]]]}, "2025-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.25, 24.0], [4.35, 24.25], [4.25, 24.5], [4.35, 24.75], [4.25, 25.0], [4.47, 25.53], [4.82, 25.68], [4.85, 25.75], [4.75, 26.0], [4.97, 26.53], [5.5, 26.75], [6.03, 26.53], [6.18, 26.18], [6.53, 26.03], [6.75, 25.5], [6.65, 25.25], [6.75, 25.0], [6.65, 24.75], [6.68, 24.68], [7.03, 24.53], [7.25, 24.0], [7.03, 23.47], [6.68, 23.32], [6.53, 22.97], [6.0, 22.75], [5.75, 22.85], [5.5, 22.75], [5.25, 22.85], [5.0, 22.75], [4.47, 22.97], [4.25, 23.5], [4.35, 23.75], [4.25, 24.0]]]]}, "2025-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.47, 24.47], [4.25, 25.0], [4.47, 25.53], [4.82, 25.68], [4.85, 25.75], [4.75, 26.0], [4.97, 26.53], [5.5, 26.75], [6.03, 26.53], [6.18, 26.18], [6.53, 26.03], [6.75, 25.5], [6.65, 25.25], [6.75, 25.0], [6.65, 24.75], [6.68, 24.68], [7.03, 24.53], [7.25, 24.0], [7.03, 23.47], [6.5, 23.25], [6.25, 23.35], [6.18, 23.32], [6.03, 22.97], [5.5, 22.75], [4.97, 22.97], [4.75, 23.5], [4.85, 23.75], [4.75, 24.0], [4.85, 24.25], [4.82, 24.32], [4.47, 24.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.3989429629458527}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.2244178073643526}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [34.667876180013025, 35.158719145946066, 34.86025984022359, 35.20530609130867, 35.091548364812695, 35.358363706571595, 33.518740590413415, 33.769800613865755]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [34.667876180013025, 36.13598276774093, 36.492773946126306, 38.33976898193362, 38.43633041381838, 39.3978045145671, 35.87057266235354, 36.03598047892257]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9715555546483188, 1.8114971272002418, 1.926190815324522, 2.1649882354001897, 2.369457916618998, 2.5164854626900475, 2.0817372070098052, 2.1385102711090966]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.9715555546483188, 2.114878823271397, 2.1810746704869075, 3.3989429629458527, 3.3474000788471585, 3.140637936750238, 3.1231396898210733, 2.8012409984432907]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5800894143950823, 1.4209314570494296, 1.491383756955961, 1.5862688566756615, 1.7145346404653454, 1.8346802001913838, 1.4594231267984992, 1.5029287448232507]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5800894143950823, 1.7283864639819215, 1.7703226340416816, 2.338560254158507, 2.220388211051429, 2.312563576647326, 2.073836561942818, 2.0012706409905507]}}