{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:43.721061", "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-Oct-30_to_2013-Nov-01_15.0_-21.0"}, "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": 2013100001285}, "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": "October 30 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 01 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": 66585.08348547018}, "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": ["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": -21.0}, "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": 15.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "15.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 12.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, -17.47], [12.5, -17.25], [13.03, -17.47], [13.18, -17.82], [13.53, -17.97], [13.68, -18.32], [14.03, -18.47], [14.25, -19.0], [14.15, -19.25], [14.18, -19.32], [14.25, -19.35], [14.5, -19.25], [14.75, -19.35], [15.0, -19.25], [15.53, -19.47], [15.75, -20.0], [15.65, -20.25], [15.68, -20.32], [16.03, -20.47], [16.25, -21.0], [16.15, -21.25], [16.18, -21.32], [16.53, -21.47], [16.75, -22.0], [16.65, -22.25], [16.75, -22.5], [16.53, -23.03], [16.0, -23.25], [15.75, -23.15], [15.5, -23.25], [14.97, -23.03], [14.82, -22.68], [14.47, -22.53], [14.25, -22.0], [14.35, -21.75], [14.32, -21.68], [13.97, -21.53], [13.82, -21.18], [13.47, -21.03], [13.32, -20.68], [12.97, -20.53], [12.75, -20.0], [12.85, -19.75], [12.82, -19.68], [12.47, -19.53], [12.32, -19.18], [11.97, -19.03], [11.75, -18.5], [11.85, -18.25], [11.75, -18.0], [11.97, -17.47]]]]}, "2013-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, -17.47], [12.5, -17.25], [13.03, -17.47], [13.18, -17.82], [13.53, -17.97], [13.68, -18.32], [14.03, -18.47], [14.25, -19.0], [14.15, -19.25], [14.18, -19.32], [14.25, -19.35], [14.5, -19.25], [14.75, -19.35], [15.0, -19.25], [15.53, -19.47], [15.75, -20.0], [15.65, -20.25], [15.68, -20.32], [16.03, -20.47], [16.25, -21.0], [16.15, -21.25], [16.18, -21.32], [16.53, -21.47], [16.75, -22.0], [16.65, -22.25], [16.75, -22.5], [16.53, -23.03], [16.0, -23.25], [15.75, -23.15], [15.5, -23.25], [14.97, -23.03], [14.82, -22.68], [14.47, -22.53], [14.25, -22.0], [14.35, -21.75], [14.32, -21.68], [13.97, -21.53], [13.82, -21.18], [13.47, -21.03], [13.32, -20.68], [12.97, -20.53], [12.75, -20.0], [12.85, -19.75], [12.82, -19.68], [12.47, -19.53], [12.32, -19.18], [11.97, -19.03], [11.75, -18.5], [11.85, -18.25], [11.75, -18.0], [11.97, -17.47]]]]}, "2013-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, -17.47], [12.5, -17.25], [13.03, -17.47], [13.18, -17.82], [13.53, -17.97], [13.68, -18.32], [14.03, -18.47], [14.25, -19.0], [14.15, -19.25], [14.18, -19.32], [14.25, -19.35], [14.5, -19.25], [14.75, -19.35], [15.0, -19.25], [15.53, -19.47], [15.75, -20.0], [15.65, -20.25], [15.68, -20.32], [16.03, -20.47], [16.25, -21.0], [16.15, -21.25], [16.18, -21.32], [16.53, -21.47], [16.75, -22.0], [16.65, -22.25], [16.75, -22.5], [16.53, -23.03], [16.0, -23.25], [15.75, -23.15], [15.5, -23.25], [14.97, -23.03], [14.82, -22.68], [14.47, -22.53], [14.25, -22.0], [14.35, -21.75], [14.32, -21.68], [13.97, -21.53], [13.82, -21.18], [13.47, -21.03], [13.32, -20.68], [12.97, -20.53], [12.75, -20.0], [12.85, -19.75], [12.82, -19.68], [12.47, -19.53], [12.32, -19.18], [11.97, -19.03], [11.75, -18.5], [11.85, -18.25], [11.75, -18.0], [11.97, -17.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.217016097650003}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.836137351693408}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.344411143090724, 18.08199911901795, 18.832703852478346]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.053773079964117, 15.011961175469366, 16.61474360315532]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.207636782934119, -5.550903492696846, -4.7498717794492595]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.465154827538811, -7.217016097650003, -5.888298173583223]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6186047231423901, -2.0811435888206686, -1.7822878709632537]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9487638613012515, -2.499550947919404, -2.1230837674074294]}}