{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:27.519057", "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": "2015-Jul-30_to_2015-Aug-01_27.0_-28.5"}, "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": 2015070001273}, "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": "July 30 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 01 2015"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 65023.42976655635}, "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": ["South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "W.Southern-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": []}, "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": -28.5}, "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": 27.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "27.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.25, -27.5], [23.47, -26.97], [24.0, -26.75], [24.53, -26.97], [24.68, -27.32], [24.75, -27.35], [25.0, -27.25], [25.25, -27.35], [25.5, -27.25], [25.75, -27.35], [26.0, -27.25], [26.25, -27.35], [26.5, -27.25], [27.03, -27.47], [27.18, -27.82], [27.53, -27.97], [27.75, -28.5], [27.65, -28.75], [27.75, -29.0], [27.53, -29.53], [27.18, -29.68], [27.03, -30.03], [26.68, -30.18], [26.53, -30.53], [26.0, -30.75], [25.47, -30.53], [25.3, -30.12], [25.18, -30.18], [25.03, -30.53], [24.5, -30.75], [23.97, -30.53], [23.75, -30.0], [23.85, -29.75], [23.75, -29.5], [23.85, -29.25], [23.75, -29.0], [23.85, -28.75], [23.75, -28.5], [23.85, -28.25], [23.82, -28.18], [23.47, -28.03], [23.25, -27.5]]]]}, "2015-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.25, -27.5], [23.47, -26.97], [24.0, -26.75], [24.53, -26.97], [24.68, -27.32], [24.75, -27.35], [25.0, -27.25], [25.25, -27.35], [25.5, -27.25], [25.75, -27.35], [26.0, -27.25], [26.25, -27.35], [26.5, -27.25], [27.03, -27.47], [27.18, -27.82], [27.53, -27.97], [27.75, -28.5], [27.65, -28.75], [27.75, -29.0], [27.53, -29.53], [27.18, -29.68], [27.03, -30.03], [26.68, -30.18], [26.53, -30.53], [26.0, -30.75], [25.47, -30.53], [25.3, -30.12], [25.18, -30.18], [25.03, -30.53], [24.5, -30.75], [23.97, -30.53], [23.75, -30.0], [23.85, -29.75], [23.75, -29.5], [23.85, -29.25], [23.75, -29.0], [23.85, -28.75], [23.75, -28.5], [23.85, -28.25], [23.82, -28.18], [23.47, -28.03], [23.25, -27.5]]]]}, "2015-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.25, -27.5], [23.47, -26.97], [24.0, -26.75], [24.53, -26.97], [24.68, -27.32], [24.75, -27.35], [25.0, -27.25], [25.25, -27.35], [25.5, -27.25], [25.75, -27.35], [26.0, -27.25], [26.25, -27.35], [26.5, -27.25], [27.03, -27.47], [27.18, -27.82], [27.53, -27.97], [27.75, -28.5], [27.65, -28.75], [27.75, -29.0], [27.53, -29.53], [27.18, -29.68], [27.03, -30.03], [26.68, -30.18], [26.53, -30.53], [26.0, -30.75], [25.47, -30.53], [25.3, -30.12], [25.18, -30.18], [25.03, -30.53], [24.5, -30.75], [23.97, -30.53], [23.75, -30.0], [23.85, -29.75], [23.75, -29.5], [23.85, -29.25], [23.75, -29.0], [23.85, -28.75], [23.75, -28.5], [23.85, -28.25], [23.82, -28.18], [23.47, -28.03], [23.25, -27.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.686966431353767}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.7437527801065515}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.80730532749368, 5.192452330145613, 5.608619475081753]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.867332332298076, 3.527779269141263, 4.7420507996979495]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.2704702385512405, -5.065781056150492, -4.895007045617923]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.892399298268288, -5.602357476872896, -5.686966431353767]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5885972695367891, -1.9184258187959033, -1.8295182904159688]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7323148350139617, -2.3252041785376703, -2.187455696470557]}}