{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:47.555155", "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-Apr-24_to_2015-Apr-26_18.5_-1.0"}, "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": 2015040000906}, "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": "April 24 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 26 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": 71080.90395370759}, "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": ["Congo", "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": -1.0}, "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": 16.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.75}, "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": 0.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.35, -1.25], [16.25, -1.0], [16.47, -0.47], [16.82, -0.32], [16.85, -0.25], [16.75, 0.0], [16.97, 0.53], [17.5, 0.75], [17.75, 0.65], [18.0, 0.75], [18.25, 0.65], [18.5, 0.75], [18.75, 0.65], [19.0, 0.75], [19.25, 0.65], [19.5, 0.75], [20.03, 0.53], [20.25, 0.0], [20.15, -0.25], [20.25, -0.5], [20.03, -1.03], [19.68, -1.18], [19.65, -1.25], [19.75, -1.5], [19.53, -2.03], [19.0, -2.25], [18.75, -2.15], [18.68, -2.18], [18.53, -2.53], [18.0, -2.75], [17.75, -2.65], [17.5, -2.75], [17.25, -2.65], [17.0, -2.75], [16.47, -2.53], [16.25, -2.0], [16.35, -1.75], [16.25, -1.5], [16.35, -1.25]]]]}, "2015-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.35, -1.25], [16.25, -1.0], [16.47, -0.47], [16.82, -0.32], [16.85, -0.25], [16.75, 0.0], [16.97, 0.53], [17.5, 0.75], [17.75, 0.65], [18.0, 0.75], [18.25, 0.65], [18.5, 0.75], [18.75, 0.65], [19.0, 0.75], [19.25, 0.65], [19.5, 0.75], [20.03, 0.53], [20.25, 0.0], [20.15, -0.25], [20.25, -0.5], [20.03, -1.03], [19.68, -1.18], [19.65, -1.25], [19.75, -1.5], [19.53, -2.03], [19.0, -2.25], [18.75, -2.15], [18.68, -2.18], [18.53, -2.53], [18.0, -2.75], [17.75, -2.65], [17.5, -2.75], [17.25, -2.65], [17.0, -2.75], [16.47, -2.53], [16.25, -2.0], [16.35, -1.75], [16.25, -1.5], [16.35, -1.25]]]]}, "2015-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.35, -1.25], [16.25, -1.0], [16.47, -0.47], [16.82, -0.32], [16.85, -0.25], [16.75, 0.0], [16.97, 0.53], [17.5, 0.75], [17.75, 0.65], [18.0, 0.75], [18.25, 0.65], [18.5, 0.75], [18.75, 0.65], [19.0, 0.75], [19.25, 0.65], [19.5, 0.75], [20.03, 0.53], [20.25, 0.0], [20.15, -0.25], [20.25, -0.5], [20.03, -1.03], [19.68, -1.18], [19.65, -1.25], [19.75, -1.5], [19.53, -2.03], [19.0, -2.25], [18.75, -2.15], [18.68, -2.18], [18.53, -2.53], [18.0, -2.75], [17.75, -2.65], [17.5, -2.75], [17.25, -2.65], [17.0, -2.75], [16.47, -2.53], [16.25, -2.0], [16.35, -1.75], [16.25, -1.5], [16.35, -1.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.2577693430690147}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6674609241441773}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.283809938501633, 24.25431194987226, 24.29452023677311]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.8135614317693, 23.390826599521745, 23.577149380499463]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.687037418296081, -1.7086575732514648, -1.6066877808849862]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9844381410561027, -2.2577693430690147, -2.0195281872970554]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7395023307268473, -1.7895884987968622, -1.6911470290235646]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0210335241183026, -2.3197601424549115, -2.055900340362677]}}