{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:14.321592", "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": "2013-May-01_to_2013-May-06_18.5_-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": 2013050000045}, "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": "May 01 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 06 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 144082.46993778268}, "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": ["Angola", "Botswana", "Namibia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": -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": 18.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "18.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.25, -18.0], [17.47, -17.47], [18.0, -17.25], [18.25, -17.35], [18.5, -17.25], [18.75, -17.35], [19.0, -17.25], [19.53, -17.47], [19.75, -18.0], [19.65, -18.25], [19.75, -18.5], [19.53, -19.03], [19.0, -19.25], [18.47, -19.03], [18.32, -18.68], [18.25, -18.65], [18.0, -18.75], [17.47, -18.53], [17.25, -18.0]]], [[[20.47, -18.03], [20.25, -17.5], [20.47, -16.97], [21.0, -16.75], [21.53, -16.97], [21.75, -17.5], [21.53, -18.03], [21.0, -18.25], [20.47, -18.03]]]]}, "2013-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.0, -17.25], [18.25, -17.35], [18.38, -17.3], [18.25, -17.0], [18.47, -16.47], [19.0, -16.25], [19.5, -16.46], [20.0, -16.25], [20.25, -16.35], [20.5, -16.25], [21.03, -16.47], [21.18, -16.82], [21.25, -16.85], [21.5, -16.75], [22.03, -16.97], [22.2, -17.37], [22.5, -17.25], [22.75, -17.35], [23.0, -17.25], [23.53, -17.47], [23.75, -18.0], [23.53, -18.53], [23.18, -18.68], [23.15, -18.75], [23.25, -19.0], [23.03, -19.53], [22.5, -19.75], [22.25, -19.65], [22.0, -19.75], [21.75, -19.65], [21.5, -19.75], [21.2, -19.62], [21.15, -19.75], [21.25, -20.0], [21.03, -20.53], [20.5, -20.75], [19.97, -20.53], [19.82, -20.18], [19.47, -20.03], [19.32, -19.68], [19.25, -19.65], [19.0, -19.75], [18.47, -19.53], [18.32, -19.18], [18.25, -19.15], [18.0, -19.25], [17.75, -19.15], [17.5, -19.25], [16.97, -19.03], [16.75, -18.5], [16.97, -17.97], [17.32, -17.82], [17.47, -17.47], [18.0, -17.25]]]]}, "2013-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.0, -17.25], [18.25, -17.35], [18.32, -17.32], [18.35, -17.25], [18.25, -17.0], [18.47, -16.47], [18.82, -16.32], [18.97, -15.97], [19.5, -15.75], [19.75, -15.85], [20.0, -15.75], [20.25, -15.85], [20.5, -15.75], [20.75, -15.85], [21.0, -15.75], [21.25, -15.85], [21.5, -15.75], [21.75, -15.85], [22.0, -15.75], [22.53, -15.97], [22.75, -16.5], [22.53, -17.03], [22.18, -17.18], [22.15, -17.25], [22.2, -17.37], [22.5, -17.25], [22.75, -17.35], [23.0, -17.25], [23.53, -17.47], [23.75, -18.0], [23.53, -18.53], [23.18, -18.68], [23.15, -18.75], [23.25, -19.0], [23.03, -19.53], [22.5, -19.75], [22.25, -19.65], [22.0, -19.75], [21.75, -19.65], [21.5, -19.75], [21.2, -19.62], [21.15, -19.75], [21.25, -20.0], [21.03, -20.53], [20.5, -20.75], [19.97, -20.53], [19.82, -20.18], [19.47, -20.03], [19.32, -19.68], [19.25, -19.65], [19.0, -19.75], [18.47, -19.53], [18.32, -19.18], [18.25, -19.15], [18.0, -19.25], [17.75, -19.15], [17.5, -19.25], [16.97, -19.03], [16.75, -18.5], [16.97, -17.97], [17.32, -17.82], [17.47, -17.47], [18.0, -17.25]]]]}, "2013-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.25, -17.5], [17.47, -16.97], [18.0, -16.75], [18.25, -16.85], [18.32, -16.82], [18.47, -16.47], [18.82, -16.32], [18.97, -15.97], [19.5, -15.75], [19.75, -15.85], [20.0, -15.75], [20.25, -15.85], [20.5, -15.75], [20.75, -15.85], [21.0, -15.75], [21.25, -15.85], [21.5, -15.75], [21.75, -15.85], [22.0, -15.75], [22.53, -15.97], [22.75, -16.5], [22.53, -17.03], [22.18, -17.18], [22.15, -17.25], [22.2, -17.37], [22.5, -17.25], [22.75, -17.35], [23.0, -17.25], [23.53, -17.47], [23.75, -18.0], [23.53, -18.53], [23.18, -18.68], [23.15, -18.75], [23.25, -19.0], [23.03, -19.53], [22.5, -19.75], [22.25, -19.65], [22.0, -19.75], [21.75, -19.65], [21.5, -19.75], [21.2, -19.62], [21.15, -19.75], [21.25, -20.0], [21.03, -20.53], [20.5, -20.75], [19.97, -20.53], [19.82, -20.18], [19.47, -20.03], [19.32, -19.68], [19.25, -19.65], [19.0, -19.75], [18.47, -19.53], [18.32, -19.18], [18.25, -19.15], [18.0, -19.25], [17.75, -19.15], [17.5, -19.25], [16.97, -19.03], [16.75, -18.5], [16.97, -17.97], [17.32, -17.82], [17.35, -17.75], [17.25, -17.5]]]]}, "2013-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.25, -17.5], [17.47, -16.97], [18.0, -16.75], [18.25, -16.85], [18.32, -16.82], [18.47, -16.47], [18.82, -16.32], [18.97, -15.97], [19.5, -15.75], [19.75, -15.85], [20.0, -15.75], [20.25, -15.85], [20.5, -15.75], [20.75, -15.85], [21.0, -15.75], [21.25, -15.85], [21.5, -15.75], [21.75, -15.85], [22.0, -15.75], [22.53, -15.97], [22.75, -16.5], [22.53, -17.03], [22.18, -17.18], [22.15, -17.25], [22.25, -17.5], [22.15, -17.75], [22.18, -17.82], [22.53, -17.97], [22.75, -18.5], [22.53, -19.03], [22.0, -19.25], [21.75, -19.15], [21.5, -19.25], [21.25, -19.15], [21.18, -19.18], [21.15, -19.25], [21.25, -19.5], [21.15, -19.75], [21.25, -20.0], [21.03, -20.53], [20.5, -20.75], [19.97, -20.53], [19.82, -20.18], [19.47, -20.03], [19.32, -19.68], [19.25, -19.65], [19.0, -19.75], [18.47, -19.53], [18.32, -19.18], [18.25, -19.15], [18.0, -19.25], [17.75, -19.15], [17.5, -19.25], [16.97, -19.03], [16.75, -18.5], [16.97, -17.97], [17.32, -17.82], [17.35, -17.75], [17.25, -17.5]]]]}, "2013-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.25, -17.5], [17.47, -16.97], [18.0, -16.75], [18.25, -16.85], [18.5, -16.75], [18.75, -16.85], [19.0, -16.75], [19.3, -16.87], [19.47, -16.47], [20.0, -16.25], [20.25, -16.35], [20.5, -16.25], [21.03, -16.47], [21.25, -17.0], [21.03, -17.53], [20.5, -17.75], [20.25, -17.65], [20.0, -17.75], [19.7, -17.62], [19.65, -17.75], [19.75, -18.0], [19.65, -18.25], [19.68, -18.32], [20.03, -18.47], [20.18, -18.82], [20.53, -18.97], [20.68, -19.32], [21.03, -19.47], [21.25, -20.0], [21.03, -20.53], [20.5, -20.75], [19.97, -20.53], [19.82, -20.18], [19.47, -20.03], [19.32, -19.68], [19.25, -19.65], [19.0, -19.75], [18.47, -19.53], [18.32, -19.18], [18.25, -19.15], [18.0, -19.25], [17.75, -19.15], [17.5, -19.25], [16.97, -19.03], [16.75, -18.5], [16.97, -17.97], [17.32, -17.82], [17.35, -17.75], [17.25, -17.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0784769202666666}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.248329318854272}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.980984533496382, 19.381516399955103, 19.366884755318154, 19.367864391054013, 19.26184596675455, 19.325672515447764]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.516691904403388, 17.90953121314817, 17.910562410472494, 18.28583891362274, 17.464609229176517, 18.051360506665958]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8826788477873948, -2.2281269822637206, -2.243829354355258, -2.238057937992763, -2.3259484527497922, -2.2415983835776068]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.00179806656314, -2.7645695603661693, -2.8320844519356, -2.6882037479841756, -3.0784769202666666, -2.4857402536842983]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3688233925365085, -1.5715171843892084, -1.6094164360112584, -1.626825354735567, -1.6271045818054641, -1.443121439664912]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4070843525995935, -1.9130904843026773, -2.006629484314603, -2.0477338684049173, -2.0148541943961407, -1.657089688041604]}}