{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:07.872812", "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-20_to_2021-Aug-24_344.0_18.0"}, "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": 2021080002519}, "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 20 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 24 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 79620.94435514093}, "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": ["Mauritania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": ["North Atlantic Ocean"]}, "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": 18.0}, "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": 344.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "344.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 340.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 344.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.0, 18.75], [-15.47, 18.53], [-15.25, 18.0], [-15.47, 17.47], [-16.0, 17.25], [-16.53, 17.47], [-16.75, 18.0], [-16.53, 18.53], [-16.0, 18.75]]]]}, "2021-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-20.03, 17.53], [-19.68, 17.68], [-19.65, 17.75], [-19.75, 18.0], [-19.65, 18.25], [-19.75, 18.5], [-19.53, 19.03], [-19.0, 19.25], [-18.75, 19.15], [-18.5, 19.25], [-18.0, 19.04], [-17.5, 19.25], [-17.25, 19.15], [-17.0, 19.25], [-16.75, 19.15], [-16.5, 19.25], [-15.97, 19.03], [-15.82, 18.68], [-15.47, 18.53], [-15.25, 18.0], [-15.47, 17.47], [-16.0, 17.25], [-16.25, 17.35], [-16.32, 17.32], [-16.35, 17.25], [-16.25, 17.0], [-16.47, 16.47], [-17.0, 16.25], [-17.3, 16.38], [-17.47, 15.97], [-18.0, 15.75], [-18.25, 15.85], [-18.5, 15.75], [-18.75, 15.85], [-19.0, 15.75], [-19.25, 15.85], [-19.5, 15.75], [-20.03, 15.97], [-20.25, 16.5], [-20.15, 16.75], [-20.25, 17.0], [-20.03, 17.53]]]]}, "2021-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-20.15, 16.75], [-20.25, 17.0], [-20.03, 17.53], [-19.68, 17.68], [-19.65, 17.75], [-19.75, 18.0], [-19.65, 18.25], [-19.75, 18.5], [-19.53, 19.03], [-19.0, 19.25], [-18.75, 19.15], [-18.5, 19.25], [-18.0, 19.04], [-17.5, 19.25], [-17.25, 19.15], [-17.0, 19.25], [-16.75, 19.15], [-16.5, 19.25], [-15.97, 19.03], [-15.82, 18.68], [-15.47, 18.53], [-15.25, 18.0], [-15.47, 17.47], [-16.0, 17.25], [-16.25, 17.35], [-16.32, 17.32], [-16.35, 17.25], [-16.25, 17.0], [-16.47, 16.47], [-16.82, 16.32], [-16.97, 15.97], [-17.5, 15.75], [-17.75, 15.85], [-18.0, 15.75], [-18.25, 15.85], [-18.32, 15.82], [-18.47, 15.47], [-19.0, 15.25], [-19.25, 15.35], [-19.5, 15.25], [-20.03, 15.47], [-20.25, 16.0], [-20.15, 16.25], [-20.25, 16.5], [-20.15, 16.75]]]]}, "2021-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-20.15, 16.75], [-20.25, 17.0], [-20.03, 17.53], [-19.68, 17.68], [-19.65, 17.75], [-19.75, 18.0], [-19.65, 18.25], [-19.75, 18.5], [-19.53, 19.03], [-19.0, 19.25], [-18.75, 19.15], [-18.5, 19.25], [-18.0, 19.04], [-17.5, 19.25], [-17.25, 19.15], [-17.0, 19.25], [-16.75, 19.15], [-16.5, 19.25], [-15.97, 19.03], [-15.82, 18.68], [-15.47, 18.53], [-15.25, 18.0], [-15.47, 17.47], [-16.0, 17.25], [-16.25, 17.35], [-16.32, 17.32], [-16.35, 17.25], [-16.25, 17.0], [-16.47, 16.47], [-16.82, 16.32], [-16.97, 15.97], [-17.5, 15.75], [-17.75, 15.85], [-18.0, 15.75], [-18.25, 15.85], [-18.32, 15.82], [-18.47, 15.47], [-19.0, 15.25], [-19.25, 15.35], [-19.5, 15.25], [-20.03, 15.47], [-20.25, 16.0], [-20.15, 16.25], [-20.25, 16.5], [-20.15, 16.75]]]]}, "2021-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-20.03, 17.03], [-19.68, 17.18], [-19.53, 17.53], [-19.0, 17.75], [-18.75, 17.65], [-18.5, 17.75], [-17.97, 17.53], [-17.82, 17.18], [-17.75, 17.15], [-17.68, 17.18], [-17.53, 17.53], [-17.12, 17.7], [-17.25, 18.0], [-17.15, 18.25], [-17.25, 18.5], [-17.03, 19.03], [-16.5, 19.25], [-15.97, 19.03], [-15.75, 18.5], [-15.85, 18.25], [-15.75, 18.0], [-15.97, 17.47], [-16.37, 17.3], [-16.25, 17.0], [-16.47, 16.47], [-16.82, 16.32], [-16.97, 15.97], [-17.5, 15.75], [-17.75, 15.85], [-18.0, 15.75], [-18.25, 15.85], [-18.32, 15.82], [-18.47, 15.47], [-19.0, 15.25], [-19.25, 15.35], [-19.5, 15.25], [-20.03, 15.47], [-20.25, 16.0], [-20.15, 16.25], [-20.25, 16.5], [-20.03, 17.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.136243405029234}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.8835940900623982}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.599115622456736, 27.6537775967318, 28.802279974633223, 28.80110663243812, 27.86123583025085]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.599115622456736, 29.399034111317917, 35.182197789334055, 30.195440126266874, 28.124864488003652]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6684818124728622, 1.2861774223965956, 2.339469929249362, 2.294763557918204, 1.1455015076802322]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.6684818124728622, 1.5712263992010662, 7.136243405029234, 3.4426739699634368, 1.3188635115238299]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4550697024751318, 1.4347818069393845, 2.5753793509751737, 2.5882739792191254, 1.4492704482539411]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4550697024751318, 1.645558904617634, 6.363045332582677, 3.423470081986316, 1.5973533903740134]}}