{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:01.949920", "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": "2011-Nov-30_to_2011-Dec-04_7.0_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": 2011110002818}, "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": "November 30 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 04 2011"}, "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": 52405.62124980122}, "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": 7.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "7.0\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": 8.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.25}, "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": {"2011-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.25, 4.5], [6.47, 5.03], [7.0, 5.25], [7.25, 5.15], [7.5, 5.25], [7.75, 5.15], [8.0, 5.25], [8.53, 5.03], [8.75, 4.5], [8.65, 4.25], [8.75, 4.0], [8.53, 3.47], [8.0, 3.25], [7.75, 3.35], [7.68, 3.32], [7.53, 2.97], [7.0, 2.75], [6.75, 2.85], [6.5, 2.75], [5.97, 2.97], [5.75, 3.5], [5.97, 4.03], [6.32, 4.18], [6.35, 4.25], [6.25, 4.5]]]]}, "2011-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.97, 3.47], [4.75, 4.0], [4.97, 4.53], [5.5, 4.75], [5.75, 4.65], [6.0, 4.75], [6.25, 4.65], [6.32, 4.68], [6.47, 5.03], [7.0, 5.25], [7.25, 5.15], [7.5, 5.25], [7.75, 5.15], [8.0, 5.25], [8.53, 5.03], [8.75, 4.5], [8.65, 4.25], [8.75, 4.0], [8.53, 3.47], [8.0, 3.25], [7.75, 3.35], [7.68, 3.32], [7.53, 2.97], [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], [4.97, 3.47]]]]}, "2011-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.35, 4.75], [4.25, 5.0], [4.47, 5.53], [5.0, 5.75], [5.53, 5.53], [5.68, 5.18], [5.75, 5.15], [6.0, 5.25], [6.25, 5.15], [6.5, 5.25], [6.75, 5.15], [7.0, 5.25], [7.25, 5.15], [7.5, 5.25], [7.75, 5.15], [8.0, 5.25], [8.53, 5.03], [8.75, 4.5], [8.65, 4.25], [8.75, 4.0], [8.53, 3.47], [8.0, 3.25], [7.75, 3.35], [7.68, 3.32], [7.53, 2.97], [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], [4.35, 4.25], [4.25, 4.5], [4.35, 4.75]]]]}, "2011-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.35, 4.75], [4.25, 5.0], [4.47, 5.53], [5.0, 5.75], [5.53, 5.53], [5.68, 5.18], [5.75, 5.15], [6.0, 5.25], [6.25, 5.15], [6.5, 5.25], [6.75, 5.15], [7.0, 5.25], [7.25, 5.15], [7.5, 5.25], [7.75, 5.15], [8.0, 5.25], [8.53, 5.03], [8.75, 4.5], [8.53, 3.97], [8.18, 3.82], [8.03, 3.47], [7.5, 3.25], [7.0, 3.46], [6.5, 3.25], [6.25, 3.35], [6.0, 3.25], [5.75, 3.35], [5.5, 3.25], [5.25, 3.35], [5.0, 3.25], [4.47, 3.47], [4.25, 4.0], [4.35, 4.25], [4.25, 4.5], [4.35, 4.75]]]]}, "2011-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.35, 4.75], [4.25, 5.0], [4.47, 5.53], [5.0, 5.75], [5.53, 5.53], [5.68, 5.18], [5.75, 5.15], [6.0, 5.25], [6.25, 5.15], [6.5, 5.25], [6.75, 5.15], [7.0, 5.25], [7.25, 5.15], [7.5, 5.25], [7.75, 5.15], [8.0, 5.25], [8.53, 5.03], [8.75, 4.5], [8.53, 3.97], [8.18, 3.82], [8.03, 3.47], [7.5, 3.25], [7.0, 3.46], [6.5, 3.25], [6.25, 3.35], [6.0, 3.25], [5.75, 3.35], [5.5, 3.25], [5.25, 3.35], [5.0, 3.25], [4.47, 3.47], [4.25, 4.0], [4.35, 4.25], [4.25, 4.5], [4.35, 4.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.7623583741986408}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 0.8825287611692664}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.481988917832552, 27.676962077220253, 28.029981723876006, 28.01563197768786, 27.91948767329893]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.60153923382967, 27.827566265504572, 28.614316992873512, 28.341147368409565, 28.20539539039845]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.6375025246025459, 0.7521917385591802, 1.0153122003567518, 0.9748876330147115, 0.8776005566359336]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.711834614058148, 0.896633725441518, 1.7623583741986408, 1.4926332277507868, 1.0129037583279796]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3107573314644534, 1.5893087932177197, 1.981616265978757, 1.7640265067920353, 1.5882286619411483]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4120401087404404, 1.9965084741019454, 2.707458142702357, 2.4188454516820017, 1.8933539372838408]}}