{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:25.398130", "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": "2021-Jul-06_to_2021-Jul-08_34.0_8.5"}, "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": 2021070000318}, "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": "July 06 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 08 2021"}, "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": 94812.53833391814}, "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": ["Ethiopia", "South Sudan", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-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": 8.5}, "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": 34.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 10.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.85, 8.75], [31.75, 9.0], [31.85, 9.25], [31.75, 9.5], [31.85, 9.75], [31.75, 10.0], [31.97, 10.53], [32.5, 10.75], [32.75, 10.65], [33.0, 10.75], [33.25, 10.65], [33.5, 10.75], [33.75, 10.65], [34.0, 10.75], [34.53, 10.53], [34.75, 10.0], [34.65, 9.75], [34.75, 9.5], [34.65, 9.25], [34.68, 9.18], [35.03, 9.03], [35.25, 8.5], [35.15, 8.25], [35.18, 8.18], [35.53, 8.03], [35.75, 7.5], [35.65, 7.25], [35.75, 7.0], [35.65, 6.75], [35.75, 6.5], [35.53, 5.97], [35.18, 5.82], [35.03, 5.47], [34.5, 5.25], [33.97, 5.47], [33.82, 5.82], [33.75, 5.85], [33.5, 5.75], [32.97, 5.97], [32.8, 6.38], [32.5, 6.25], [31.97, 6.47], [31.75, 7.0], [31.96, 7.5], [31.75, 8.0], [31.85, 8.25], [31.75, 8.5], [31.85, 8.75]]]]}, "2021-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.85, 8.75], [31.75, 9.0], [31.85, 9.25], [31.75, 9.5], [31.85, 9.75], [31.75, 10.0], [31.97, 10.53], [32.5, 10.75], [32.75, 10.65], [33.0, 10.75], [33.25, 10.65], [33.5, 10.75], [33.75, 10.65], [34.0, 10.75], [34.53, 10.53], [34.75, 10.0], [34.65, 9.75], [34.75, 9.5], [34.65, 9.25], [34.68, 9.18], [35.03, 9.03], [35.25, 8.5], [35.15, 8.25], [35.18, 8.18], [35.53, 8.03], [35.75, 7.5], [35.65, 7.25], [35.75, 7.0], [35.65, 6.75], [35.75, 6.5], [35.53, 5.97], [35.18, 5.82], [35.03, 5.47], [34.5, 5.25], [33.97, 5.47], [33.82, 5.82], [33.75, 5.85], [33.5, 5.75], [32.97, 5.97], [32.8, 6.38], [32.5, 6.25], [31.97, 6.47], [31.75, 7.0], [31.96, 7.5], [31.75, 8.0], [31.85, 8.25], [31.75, 8.5], [31.85, 8.75]]]]}, "2021-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.85, 8.75], [31.75, 9.0], [31.85, 9.25], [31.75, 9.5], [31.85, 9.75], [31.75, 10.0], [31.97, 10.53], [32.5, 10.75], [32.75, 10.65], [33.0, 10.75], [33.25, 10.65], [33.5, 10.75], [33.75, 10.65], [34.0, 10.75], [34.53, 10.53], [34.75, 10.0], [34.65, 9.75], [34.75, 9.5], [34.65, 9.25], [34.68, 9.18], [35.03, 9.03], [35.25, 8.5], [35.15, 8.25], [35.18, 8.18], [35.53, 8.03], [35.75, 7.5], [35.65, 7.25], [35.75, 7.0], [35.65, 6.75], [35.75, 6.5], [35.53, 5.97], [35.18, 5.82], [35.03, 5.47], [34.5, 5.25], [33.97, 5.47], [33.82, 5.82], [33.75, 5.85], [33.5, 5.75], [32.97, 5.97], [32.8, 6.38], [32.5, 6.25], [31.97, 6.47], [31.75, 7.0], [31.96, 7.5], [31.75, 8.0], [31.85, 8.25], [31.75, 8.5], [31.85, 8.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.953898971418255}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4494633962629813}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.21215214613443, 23.56280618705466, 23.70788655350657]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.597399590324756, 20.724856890089256, 20.44586161751323]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.746824576606679, -2.3750388348734552, -2.22652677730881]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.953898971418255, -3.0251380230935183, -2.954367300972649]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9082845171922247, -1.6818715234844281, -1.562762579227383]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.432152334603446, -2.1078230275684136, -2.0455560765742113]}}