{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:11.240392", "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-Aug-30_to_2021-Sep-04_359.0_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": 2021080003044}, "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 30 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 04 2021"}, "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": 53648.347529220315}, "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": ["Burkina Faso", "Mali", "Niger"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Western-Africa"]}, "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": 359.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "359.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 357.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 361.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.5, 16.25], [-1.25, 16.15], [-1.0, 16.25], [-0.75, 16.15], [-0.5, 16.25], [0.03, 16.03], [0.25, 15.5], [0.03, 14.97], [-0.32, 14.82], [-0.47, 14.47], [-1.0, 14.25], [-1.25, 14.35], [-1.5, 14.25], [-1.75, 14.35], [-2.0, 14.25], [-2.53, 14.47], [-2.75, 15.0], [-2.53, 15.53], [-2.18, 15.68], [-2.03, 16.03], [-1.5, 16.25]]]]}, "2021-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.5, 16.25], [-1.25, 16.15], [-1.0, 16.25], [-0.75, 16.15], [-0.5, 16.25], [0.03, 16.03], [0.25, 15.5], [0.03, 14.97], [-0.32, 14.82], [-0.47, 14.47], [-1.0, 14.25], [-1.25, 14.35], [-1.5, 14.25], [-1.75, 14.35], [-2.0, 14.25], [-2.53, 14.47], [-2.75, 15.0], [-2.53, 15.53], [-2.18, 15.68], [-2.03, 16.03], [-1.5, 16.25]]]]}, "2021-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.5, 16.25], [-1.25, 16.15], [-1.18, 16.18], [-1.15, 16.25], [-1.25, 16.5], [-1.03, 17.03], [-0.5, 17.25], [-0.25, 17.15], [0.0, 17.25], [0.53, 17.03], [0.68, 16.68], [1.03, 16.53], [1.25, 16.0], [1.15, 15.75], [1.25, 15.5], [1.13, 15.2], [1.53, 15.03], [1.75, 14.5], [1.53, 13.97], [1.0, 13.75], [0.75, 13.85], [0.5, 13.75], [0.25, 13.85], [0.0, 13.75], [-0.5, 13.96], [-1.0, 13.75], [-1.53, 13.97], [-1.68, 14.32], [-1.75, 14.35], [-2.0, 14.25], [-2.53, 14.47], [-2.75, 15.0], [-2.53, 15.53], [-2.18, 15.68], [-2.03, 16.03], [-1.5, 16.25]]]]}, "2021-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.5, 16.25], [-1.25, 16.15], [-1.18, 16.18], [-1.15, 16.25], [-1.25, 16.5], [-1.03, 17.03], [-0.5, 17.25], [-0.25, 17.15], [0.0, 17.25], [0.53, 17.03], [0.68, 16.68], [1.03, 16.53], [1.25, 16.0], [1.15, 15.75], [1.25, 15.5], [1.13, 15.2], [1.53, 15.03], [1.75, 14.5], [1.53, 13.97], [1.0, 13.75], [0.75, 13.85], [0.5, 13.75], [0.25, 13.85], [0.0, 13.75], [-0.5, 13.96], [-1.0, 13.75], [-1.53, 13.97], [-1.68, 14.32], [-1.75, 14.35], [-2.0, 14.25], [-2.53, 14.47], [-2.75, 15.0], [-2.53, 15.53], [-2.18, 15.68], [-2.03, 16.03], [-1.5, 16.25]]]]}, "2021-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.25, 15.0], [-2.03, 15.53], [-1.68, 15.68], [-1.53, 16.03], [-1.18, 16.18], [-1.15, 16.25], [-1.25, 16.5], [-1.03, 17.03], [-0.5, 17.25], [-0.25, 17.15], [0.0, 17.25], [0.53, 17.03], [0.68, 16.68], [1.03, 16.53], [1.25, 16.0], [1.15, 15.75], [1.25, 15.5], [1.13, 15.2], [1.53, 15.03], [1.75, 14.5], [1.53, 13.97], [1.0, 13.75], [0.75, 13.85], [0.5, 13.75], [0.25, 13.85], [0.0, 13.75], [-0.5, 13.96], [-1.0, 13.75], [-1.53, 13.97], [-1.68, 14.32], [-2.03, 14.47], [-2.25, 15.0]]]]}, "2021-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.25, 15.0], [-2.03, 15.53], [-1.68, 15.68], [-1.53, 16.03], [-1.18, 16.18], [-1.15, 16.25], [-1.25, 16.5], [-1.03, 17.03], [-0.5, 17.25], [-0.25, 17.15], [0.0, 17.25], [0.53, 17.03], [0.68, 16.68], [1.03, 16.53], [1.25, 16.0], [1.15, 15.75], [1.25, 15.5], [1.13, 15.2], [1.53, 15.03], [1.75, 14.5], [1.53, 13.97], [1.0, 13.75], [0.75, 13.85], [0.5, 13.75], [0.25, 13.85], [0.0, 13.75], [-0.5, 13.96], [-1.0, 13.75], [-1.53, 13.97], [-1.68, 14.32], [-2.03, 14.47], [-2.25, 15.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.673415039208521}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.515166337736514}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [32.681925572404, 31.756545250028182, 34.76042498169784, 34.156136788713525, 32.825117560824594, 33.160182855928724]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.87418791043723, 32.69433899949121, 35.98512266831568, 35.512949229036906, 34.669760037636195, 34.97315492469585]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.467388618342312, 2.475565833880116, 4.798532694884869, 4.1145156358906325, 2.5440450856584356, 2.7759993113182837]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.990425742405307, 2.783665950573379, 5.673415039208521, 4.975391465916573, 2.8899447592310707, 3.2937084125711067]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.9720794550010117, 1.4016708366606023, 2.708376869522877, 2.3241026803503018, 1.4310445355385495, 1.5570215617595773]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.033910959462085, 1.5215555084153003, 3.131876760740428, 2.840140084353221, 1.647282669219247, 1.850178137409764]}}