{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:10.209126", "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-19_to_2021-Aug-21_1.0_20.5"}, "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": 2021080002626}, "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 19 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 21 2021"}, "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": 75364.56906918559}, "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", "Mali"]}, "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": 20.5}, "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": 1.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "1.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 0.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 2.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-0.75, 21.0], [-0.53, 21.53], [-0.18, 21.68], [-0.03, 22.03], [0.5, 22.25], [0.75, 22.15], [1.0, 22.25], [1.25, 22.15], [1.5, 22.25], [1.75, 22.15], [2.0, 22.25], [2.53, 22.03], [2.75, 21.5], [2.65, 21.25], [2.75, 21.0], [2.65, 20.75], [2.75, 20.5], [2.65, 20.25], [2.75, 20.0], [2.65, 19.75], [2.75, 19.5], [2.65, 19.25], [2.75, 19.0], [2.65, 18.75], [2.75, 18.5], [2.53, 17.97], [2.0, 17.75], [1.47, 17.97], [1.32, 18.32], [0.97, 18.47], [0.82, 18.82], [0.75, 18.85], [0.5, 18.75], [-0.03, 18.97], [-0.18, 19.32], [-0.53, 19.47], [-0.75, 20.0], [-0.65, 20.25], [-0.75, 20.5], [-0.65, 20.75], [-0.75, 21.0]]]]}}, "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": {"2021-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.75, 20.5], [-0.65, 20.75], [-0.75, 21.0], [-0.53, 21.53], [-0.18, 21.68], [-0.03, 22.03], [0.5, 22.25], [0.75, 22.15], [1.0, 22.25], [1.25, 22.15], [1.5, 22.25], [1.75, 22.15], [2.0, 22.25], [2.53, 22.03], [2.75, 21.5], [2.65, 21.25], [2.75, 21.0], [2.65, 20.75], [2.75, 20.5], [2.65, 20.25], [2.75, 20.0], [2.65, 19.75], [2.75, 19.5], [2.65, 19.25], [2.75, 19.0], [2.65, 18.75], [2.75, 18.5], [2.53, 17.97], [2.0, 17.75], [1.47, 17.97], [1.32, 18.32], [0.97, 18.47], [0.82, 18.82], [0.75, 18.85], [0.5, 18.75], [-0.03, 18.97], [-0.18, 19.32], [-0.53, 19.47], [-0.75, 20.0], [-0.65, 20.25], [-0.75, 20.5]]]]}, "2021-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.75, 20.5], [-0.65, 20.75], [-0.75, 21.0], [-0.53, 21.53], [-0.18, 21.68], [-0.03, 22.03], [0.5, 22.25], [0.75, 22.15], [1.0, 22.25], [1.25, 22.15], [1.5, 22.25], [1.75, 22.15], [2.0, 22.25], [2.53, 22.03], [2.75, 21.5], [2.65, 21.25], [2.75, 21.0], [2.65, 20.75], [2.75, 20.5], [2.65, 20.25], [2.75, 20.0], [2.65, 19.75], [2.75, 19.5], [2.65, 19.25], [2.75, 19.0], [2.65, 18.75], [2.75, 18.5], [2.53, 17.97], [2.0, 17.75], [1.47, 17.97], [1.32, 18.32], [0.97, 18.47], [0.82, 18.82], [0.75, 18.85], [0.5, 18.75], [-0.03, 18.97], [-0.18, 19.32], [-0.53, 19.47], [-0.75, 20.0], [-0.65, 20.25], [-0.75, 20.5]]]]}, "2021-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.75, 20.5], [-0.65, 20.75], [-0.75, 21.0], [-0.53, 21.53], [-0.18, 21.68], [-0.03, 22.03], [0.5, 22.25], [0.75, 22.15], [1.0, 22.25], [1.25, 22.15], [1.5, 22.25], [1.75, 22.15], [2.0, 22.25], [2.53, 22.03], [2.75, 21.5], [2.65, 21.25], [2.75, 21.0], [2.65, 20.75], [2.75, 20.5], [2.65, 20.25], [2.75, 20.0], [2.65, 19.75], [2.75, 19.5], [2.65, 19.25], [2.75, 19.0], [2.65, 18.75], [2.75, 18.5], [2.53, 17.97], [2.0, 17.75], [1.47, 17.97], [1.32, 18.32], [0.97, 18.47], [0.82, 18.82], [0.75, 18.85], [0.5, 18.75], [-0.03, 18.97], [-0.18, 19.32], [-0.53, 19.47], [-0.75, 20.0], [-0.65, 20.25], [-0.75, 20.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.971527557067759}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.6571308249409307}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [36.56169743893474, 37.155003458409, 37.05207037330263]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [37.41525465475564, 37.88005816523821, 38.2815811977876]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.149662290392032, 2.886028130847734, 2.9357020535830256]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.5850820622584365, 3.807649080153851, 3.971527557067759]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3902242977347241, 1.6893150415853908, 1.6277007151818146]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5953569654950923, 1.9522896294098255, 2.025158094980132]}}