{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:22.894295", "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-Jan-31_to_2013-Feb-02_20.0_-8.0"}, "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": 2013010000983}, "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": "January 31 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 02 2013"}, "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": 101075.34371220405}, "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", "Congo DRC"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": -8.0}, "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": 20.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "20.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.25}, "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": {"2013-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, -6.97], [19.82, -6.82], [19.96, -6.5], [19.82, -6.18], [19.47, -6.03], [19.25, -5.5], [19.47, -4.97], [20.0, -4.75], [20.53, -4.97], [20.68, -5.32], [21.03, -5.47], [21.18, -5.82], [21.25, -5.85], [21.5, -5.75], [22.03, -5.97], [22.2, -6.37], [22.5, -6.25], [22.75, -6.35], [23.0, -6.25], [23.25, -6.35], [23.5, -6.25], [24.03, -6.47], [24.25, -7.0], [24.15, -7.25], [24.25, -7.5], [24.04, -8.0], [24.18, -8.32], [24.53, -8.47], [24.75, -9.0], [24.53, -9.53], [24.0, -9.75], [23.75, -9.65], [23.5, -9.75], [23.25, -9.65], [23.0, -9.75], [22.75, -9.65], [22.5, -9.75], [21.97, -9.53], [21.82, -9.18], [21.75, -9.15], [21.5, -9.25], [20.97, -9.03], [20.82, -8.68], [20.75, -8.65], [20.5, -8.75], [20.25, -8.65], [20.0, -8.75], [19.47, -8.53], [19.25, -8.0], [19.35, -7.75], [19.25, -7.5], [19.47, -6.97]]]]}, "2013-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, -6.97], [19.82, -6.82], [19.96, -6.5], [19.82, -6.18], [19.47, -6.03], [19.25, -5.5], [19.47, -4.97], [20.0, -4.75], [20.53, -4.97], [20.68, -5.32], [21.03, -5.47], [21.18, -5.82], [21.25, -5.85], [21.5, -5.75], [22.03, -5.97], [22.2, -6.37], [22.5, -6.25], [22.75, -6.35], [23.0, -6.25], [23.25, -6.35], [23.5, -6.25], [24.03, -6.47], [24.25, -7.0], [24.15, -7.25], [24.25, -7.5], [24.04, -8.0], [24.18, -8.32], [24.53, -8.47], [24.75, -9.0], [24.53, -9.53], [24.0, -9.75], [23.75, -9.65], [23.5, -9.75], [23.25, -9.65], [23.0, -9.75], [22.75, -9.65], [22.5, -9.75], [21.97, -9.53], [21.82, -9.18], [21.75, -9.15], [21.5, -9.25], [20.97, -9.03], [20.82, -8.68], [20.75, -8.65], [20.5, -8.75], [20.25, -8.65], [20.0, -8.75], [19.47, -8.53], [19.25, -8.0], [19.35, -7.75], [19.25, -7.5], [19.47, -6.97]]]]}, "2013-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, -6.97], [19.82, -6.82], [19.96, -6.5], [19.82, -6.18], [19.47, -6.03], [19.25, -5.5], [19.47, -4.97], [20.0, -4.75], [20.53, -4.97], [20.68, -5.32], [21.03, -5.47], [21.18, -5.82], [21.25, -5.85], [21.5, -5.75], [22.03, -5.97], [22.2, -6.37], [22.5, -6.25], [22.75, -6.35], [23.0, -6.25], [23.25, -6.35], [23.5, -6.25], [24.03, -6.47], [24.25, -7.0], [24.15, -7.25], [24.25, -7.5], [24.04, -8.0], [24.18, -8.32], [24.53, -8.47], [24.75, -9.0], [24.53, -9.53], [24.0, -9.75], [23.75, -9.65], [23.5, -9.75], [23.25, -9.65], [23.0, -9.75], [22.75, -9.65], [22.5, -9.75], [21.97, -9.53], [21.82, -9.18], [21.75, -9.15], [21.5, -9.25], [20.97, -9.03], [20.82, -8.68], [20.75, -8.65], [20.5, -8.75], [20.25, -8.65], [20.0, -8.75], [19.47, -8.53], [19.25, -8.0], [19.35, -7.75], [19.25, -7.5], [19.47, -6.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9646091509307553}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0414514566788573}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.229826913439524, 21.31804318513184, 20.95419741112039]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.76555378218137, 19.684640471457328, 19.60349318048776]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.973285783195329, -1.9003084343239882, -2.250760152517254]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7290482592122203, -2.67296078526374, -2.9646091509307553]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8923110355983745, -1.7692236340883492, -2.074994351976988]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5218813334924537, -2.467215858193323, -3.1285405901474643]}}