{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:06.692556", "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": "2019-Feb-19_to_2019-Feb-21_41.0_16.5"}, "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": 2019020000609}, "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": "February 19 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 21 2019"}, "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": 56237.91944985333}, "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": ["Eritrea"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": ["Red Sea"]}, "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": 16.5}, "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": 41.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.35, 17.25], [38.25, 17.5], [38.35, 17.75], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.25, 18.65], [39.5, 18.75], [40.03, 18.53], [40.18, 18.18], [40.53, 18.03], [40.68, 17.68], [41.03, 17.53], [41.18, 17.18], [41.53, 17.03], [41.75, 16.5], [41.65, 16.25], [41.75, 16.0], [41.65, 15.75], [41.75, 15.5], [41.53, 14.97], [41.0, 14.75], [40.75, 14.85], [40.5, 14.75], [39.97, 14.97], [39.82, 15.32], [39.47, 15.47], [39.32, 15.82], [39.25, 15.85], [39.0, 15.75], [38.47, 15.97], [38.25, 16.5], [38.35, 16.75], [38.25, 17.0], [38.35, 17.25]]]]}, "2019-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.35, 17.25], [38.25, 17.5], [38.35, 17.75], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.25, 18.65], [39.5, 18.75], [40.03, 18.53], [40.18, 18.18], [40.53, 18.03], [40.68, 17.68], [41.03, 17.53], [41.18, 17.18], [41.53, 17.03], [41.75, 16.5], [41.65, 16.25], [41.75, 16.0], [41.65, 15.75], [41.75, 15.5], [41.53, 14.97], [41.0, 14.75], [40.75, 14.85], [40.5, 14.75], [39.97, 14.97], [39.82, 15.32], [39.47, 15.47], [39.32, 15.82], [39.25, 15.85], [39.0, 15.75], [38.47, 15.97], [38.25, 16.5], [38.35, 16.75], [38.25, 17.0], [38.35, 17.25]]]]}, "2019-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.35, 17.25], [38.25, 17.5], [38.35, 17.75], [38.25, 18.0], [38.47, 18.53], [39.0, 18.75], [39.25, 18.65], [39.5, 18.75], [40.03, 18.53], [40.18, 18.18], [40.53, 18.03], [40.68, 17.68], [41.03, 17.53], [41.18, 17.18], [41.53, 17.03], [41.75, 16.5], [41.65, 16.25], [41.75, 16.0], [41.65, 15.75], [41.75, 15.5], [41.53, 14.97], [41.0, 14.75], [40.75, 14.85], [40.5, 14.75], [39.97, 14.97], [39.82, 15.32], [39.47, 15.47], [39.32, 15.82], [39.25, 15.85], [39.0, 15.75], [38.47, 15.97], [38.25, 16.5], [38.35, 16.75], [38.25, 17.0], [38.35, 17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8950793010693587}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4863180688299007}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.843237936693185, 23.698752756248382, 24.227500509219738]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.240902532629036, 21.985969971877296, 23.16152110714671]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5042768405255509, -1.7100826137807057, -1.2445947521834455]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.543422860333294, -2.8950793010693587, -1.8326492729565302]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8171055047716367, -2.019541628632901, -1.4167443526852401]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.221259234580454, -2.311244678405231, -1.712537379844814]}}