{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:38.925935", "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": "2020-May-24_to_2020-May-26_350.0_9.0"}, "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": 2020050002609}, "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": "May 24 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 26 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 54978.46210001818}, "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": ["Guinea", "Sierra Leone"]}, "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": 9.0}, "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": 350.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "350.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 347.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 350.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 10.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-13.75, 8.5], [-13.53, 9.03], [-13.0, 9.25], [-12.47, 9.03], [-12.323, 8.677], [-11.97, 8.53], [-11.823, 8.177], [-11.75, 8.146], [-11.677, 8.177], [-11.646, 8.25], [-11.75, 8.5], [-11.646, 8.75], [-11.75, 9.0], [-11.53, 9.53], [-11.177, 9.677], [-11.03, 10.03], [-10.677, 10.177], [-10.646, 10.25], [-10.75, 10.5], [-10.53, 11.03], [-10.0, 11.25], [-9.47, 11.03], [-9.25, 10.5], [-9.354, 10.25], [-9.323, 10.177], [-8.97, 10.03], [-8.75, 9.5], [-8.854, 9.25], [-8.75, 9.0], [-8.854, 8.75], [-8.75, 8.5], [-8.97, 7.97], [-9.5, 7.75], [-9.75, 7.854], [-10.0, 7.75], [-10.25, 7.854], [-10.323, 7.823], [-10.47, 7.47], [-10.823, 7.323], [-10.97, 6.97], [-11.5, 6.75], [-11.75, 6.854], [-12.0, 6.75], [-12.53, 6.97], [-12.677, 7.323], [-13.03, 7.47], [-13.177, 7.823], [-13.53, 7.97], [-13.75, 8.5]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-05-24T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-13.17677669529661, 7.8232233047033635], [-13.530330085889887, 7.9696699141100895], [-13.75, 8.5], [-13.530330085889887, 9.030330085889911], [-13.0, 9.25], [-12.469669914110113, 9.030330085889911], [-12.32322330470339, 8.676776695296637], [-11.969669914110113, 8.530330085889911], [-11.82322330470339, 8.176776695296637], [-11.75, 8.146446609406722], [-11.67677669529661, 8.176776695296637], [-11.646446609406723, 8.25], [-11.75, 8.5], [-11.646446609406723, 8.75], [-11.75, 9.0], [-11.530330085889887, 9.530330085889911], [-11.17677669529661, 9.676776695296637], [-11.030330085889887, 10.030330085889911], [-10.67677669529661, 10.176776695296637], [-10.646446609406723, 10.25], [-10.75, 10.5], [-10.530330085889887, 11.030330085889911], [-10.0, 11.25], [-9.469669914110113, 11.030330085889911], [-9.25, 10.5], [-9.353553390593277, 10.25], [-9.32322330470339, 10.176776695296637], [-8.969669914110113, 10.030330085889911], [-8.75, 9.5], [-8.853553390593277, 9.25], [-8.75, 9.0], [-8.853553390593277, 8.75], [-8.75, 8.5], [-8.969669914110113, 7.9696699141100895], [-9.5, 7.75], [-9.75, 7.853553390593278], [-10.0, 7.75], [-10.25, 7.853553390593278], [-10.32322330470339, 7.8232233047033635], [-10.469669914110113, 7.4696699141100895], [-10.82322330470339, 7.3232233047033635], [-10.969669914110113, 6.9696699141100895], [-11.5, 6.75], [-11.75, 6.853553390593278], [-12.0, 6.75], [-12.530330085889887, 6.9696699141100895], [-12.67677669529661, 7.3232233047033635], [-13.030330085889887, 7.4696699141100895], [-13.17677669529661, 7.8232233047033635]]]}, "2020-05-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-13.17677669529661, 7.8232233047033635], [-13.530330085889887, 7.9696699141100895], [-13.75, 8.5], [-13.530330085889887, 9.030330085889911], [-13.0, 9.25], [-12.469669914110113, 9.030330085889911], [-12.32322330470339, 8.676776695296637], [-11.969669914110113, 8.530330085889911], [-11.82322330470339, 8.176776695296637], [-11.75, 8.146446609406722], [-11.67677669529661, 8.176776695296637], [-11.646446609406723, 8.25], [-11.75, 8.5], [-11.646446609406723, 8.75], [-11.75, 9.0], [-11.530330085889887, 9.530330085889911], [-11.17677669529661, 9.676776695296637], [-11.030330085889887, 10.030330085889911], [-10.67677669529661, 10.176776695296637], [-10.646446609406723, 10.25], [-10.75, 10.5], [-10.530330085889887, 11.030330085889911], [-10.0, 11.25], [-9.469669914110113, 11.030330085889911], [-9.25, 10.5], [-9.353553390593277, 10.25], [-9.32322330470339, 10.176776695296637], [-8.969669914110113, 10.030330085889911], [-8.75, 9.5], [-8.853553390593277, 9.25], [-8.75, 9.0], [-8.853553390593277, 8.75], [-8.75, 8.5], [-8.969669914110113, 7.9696699141100895], [-9.5, 7.75], [-9.75, 7.853553390593278], [-10.0, 7.75], [-10.25, 7.853553390593278], [-10.32322330470339, 7.8232233047033635], [-10.469669914110113, 7.4696699141100895], [-10.82322330470339, 7.3232233047033635], [-10.969669914110113, 6.9696699141100895], [-11.5, 6.75], [-11.75, 6.853553390593278], [-12.0, 6.75], [-12.530330085889887, 6.9696699141100895], [-12.67677669529661, 7.3232233047033635], [-13.030330085889887, 7.4696699141100895], [-13.17677669529661, 7.8232233047033635]]]}, "2020-05-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-13.17677669529661, 7.8232233047033635], [-13.530330085889887, 7.9696699141100895], [-13.75, 8.5], [-13.530330085889887, 9.030330085889911], [-13.0, 9.25], [-12.469669914110113, 9.030330085889911], [-12.32322330470339, 8.676776695296637], [-11.969669914110113, 8.530330085889911], [-11.82322330470339, 8.176776695296637], [-11.75, 8.146446609406722], [-11.67677669529661, 8.176776695296637], [-11.646446609406723, 8.25], [-11.75, 8.5], [-11.646446609406723, 8.75], [-11.75, 9.0], [-11.530330085889887, 9.530330085889911], [-11.17677669529661, 9.676776695296637], [-11.030330085889887, 10.030330085889911], [-10.67677669529661, 10.176776695296637], [-10.646446609406723, 10.25], [-10.75, 10.5], [-10.530330085889887, 11.030330085889911], [-10.0, 11.25], [-9.469669914110113, 11.030330085889911], [-9.25, 10.5], [-9.353553390593277, 10.25], [-9.32322330470339, 10.176776695296637], [-8.969669914110113, 10.030330085889911], [-8.75, 9.5], [-8.853553390593277, 9.25], [-8.75, 9.0], [-8.853553390593277, 8.75], [-8.75, 8.5], [-8.969669914110113, 7.9696699141100895], [-9.5, 7.75], [-9.75, 7.853553390593278], [-10.0, 7.75], [-10.25, 7.853553390593278], [-10.32322330470339, 7.8232233047033635], [-10.469669914110113, 7.4696699141100895], [-10.82322330470339, 7.3232233047033635], [-10.969669914110113, 6.9696699141100895], [-11.5, 6.75], [-11.75, 6.853553390593278], [-12.0, 6.75], [-12.530330085889887, 6.9696699141100895], [-12.67677669529661, 7.3232233047033635], [-13.030330085889887, 7.4696699141100895], [-13.17677669529661, 7.8232233047033635]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.3306520574677165}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.4537147446837144}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.827894146247104, 27.055250537007737, 26.603864476708452]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.311776413571522, 30.00498684045607, 29.907220374424185]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.4021999000960994, 1.6769861580461876, 1.2819581759088565]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.8970582471066564, 2.3306520574677165, 2.2981677533559832]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.791688716301699, 2.1723390097969038, 1.624559275611818]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.7088630985392967, 2.747636661243585, 1.9198599079828884]}}