{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:21.740226", "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": "2012-Aug-28_to_2012-Sep-01_6.0_4.5"}, "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": 2012080002932}, "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 28 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 01 2012"}, "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": 52426.91140332976}, "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": ["Nigeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["Gulf of Guinea"]}, "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": 4.5}, "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": 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": 4.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 7.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.5, 5.25], [5.75, 5.15], [6.0, 5.25], [6.53, 5.03], [6.75, 4.5], [6.53, 3.97], [6.18, 3.82], [6.03, 3.47], [5.5, 3.25], [5.25, 3.35], [5.0, 3.25], [4.47, 3.47], [4.25, 4.0], [4.47, 4.53], [4.82, 4.68], [4.97, 5.03], [5.5, 5.25]]]]}, "2012-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.47, 5.53], [5.0, 5.75], [5.25, 5.65], [5.5, 5.75], [6.03, 5.53], [6.18, 5.18], [6.25, 5.15], [6.5, 5.25], [7.03, 5.03], [7.18, 4.68], [7.53, 4.53], [7.68, 4.18], [8.03, 4.03], [8.25, 3.5], [8.03, 2.97], [7.5, 2.75], [7.25, 2.85], [7.0, 2.75], [6.75, 2.85], [6.5, 2.75], [5.97, 2.97], [5.82, 3.32], [5.75, 3.35], [5.5, 3.25], [5.25, 3.35], [5.0, 3.25], [4.47, 3.47], [4.25, 4.0], [4.46, 4.5], [4.25, 5.0], [4.47, 5.53]]]]}, "2012-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.47, 5.53], [5.0, 5.75], [5.25, 5.65], [5.5, 5.75], [6.03, 5.53], [6.18, 5.18], [6.25, 5.15], [6.5, 5.25], [7.03, 5.03], [7.18, 4.68], [7.53, 4.53], [7.68, 4.18], [8.03, 4.03], [8.25, 3.5], [8.15, 3.25], [8.25, 3.0], [8.03, 2.47], [7.68, 2.32], [7.53, 1.97], [7.0, 1.75], [6.75, 1.85], [6.5, 1.75], [5.97, 1.97], [5.75, 2.5], [5.96, 3.0], [5.82, 3.32], [5.75, 3.35], [5.5, 3.25], [5.25, 3.35], [5.0, 3.25], [4.47, 3.47], [4.25, 4.0], [4.46, 4.5], [4.25, 5.0], [4.47, 5.53]]]]}, "2012-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.25, 5.0], [4.47, 5.53], [5.0, 5.75], [5.25, 5.65], [5.5, 5.75], [6.03, 5.53], [6.18, 5.18], [6.25, 5.15], [6.5, 5.25], [7.03, 5.03], [7.18, 4.68], [7.53, 4.53], [7.68, 4.18], [8.03, 4.03], [8.25, 3.5], [8.15, 3.25], [8.25, 3.0], [8.03, 2.47], [7.68, 2.32], [7.53, 1.97], [7.0, 1.75], [6.75, 1.85], [6.5, 1.75], [5.97, 1.97], [5.75, 2.5], [5.96, 3.0], [5.82, 3.32], [5.75, 3.35], [5.5, 3.25], [4.97, 3.47], [4.75, 4.0], [4.85, 4.25], [4.82, 4.32], [4.47, 4.47], [4.25, 5.0]]]]}, "2012-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.0, 3.75], [7.25, 3.65], [7.5, 3.75], [8.03, 3.53], [8.25, 3.0], [8.03, 2.47], [7.68, 2.32], [7.53, 1.97], [7.0, 1.75], [6.75, 1.85], [6.5, 1.75], [5.97, 1.97], [5.75, 2.5], [5.97, 3.03], [6.32, 3.18], [6.47, 3.53], [7.0, 3.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.2376355862634796}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 0.5591493350572526}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.64042424075069, 25.821386421030525, 25.65093884899443, 25.705179064709228, 25.645401743606442]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.744177944194746, 26.31201831351615, 25.76620084084533, 25.840694957167443, 25.67546374999847]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.5109394653734967, 0.6677961484346523, 0.4989064861343576, 0.5635660117285219, 0.49262246250168573]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.5861051190681792, 1.2376355862634796, 0.6515153623196852, 0.734395534311318, 0.516983377843701]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6489754769146527, 1.9481967150673047, 1.5042355733250847, 1.6852303642193969, 1.476354528584331]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.00210739555718, 2.4915064316479736, 1.8919193696678471, 2.133366375333743, 1.6024539756699887]}}