{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:28.017761", "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-17_to_2021-Jul-20_32.0_-5.0"}, "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": 2021070000661}, "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 17 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 20 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 80009.45930306855}, "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": ["Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": -5.0}, "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": 32.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, -4.47], [31.0, -4.25], [31.25, -4.35], [31.32, -4.32], [31.46, -4.0], [31.25, -3.5], [31.47, -2.97], [32.0, -2.75], [32.25, -2.85], [32.5, -2.75], [33.03, -2.97], [33.18, -3.32], [33.53, -3.47], [33.75, -4.0], [33.65, -4.25], [33.75, -4.5], [33.65, -4.75], [33.75, -5.0], [33.65, -5.25], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.75, -6.5], [33.65, -6.75], [33.75, -7.0], [33.53, -7.53], [33.0, -7.75], [32.75, -7.65], [32.5, -7.75], [31.97, -7.53], [31.82, -7.18], [31.47, -7.03], [31.32, -6.68], [30.97, -6.53], [30.82, -6.18], [30.47, -6.03], [30.25, -5.5], [30.35, -5.25], [30.25, -5.0], [30.47, -4.47]]]]}, "2021-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, -4.47], [31.0, -4.25], [31.25, -4.35], [31.32, -4.32], [31.46, -4.0], [31.25, -3.5], [31.47, -2.97], [32.0, -2.75], [32.25, -2.85], [32.5, -2.75], [33.03, -2.97], [33.18, -3.32], [33.53, -3.47], [33.75, -4.0], [33.65, -4.25], [33.75, -4.5], [33.65, -4.75], [33.75, -5.0], [33.65, -5.25], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.75, -6.5], [33.65, -6.75], [33.75, -7.0], [33.53, -7.53], [33.0, -7.75], [32.75, -7.65], [32.5, -7.75], [31.97, -7.53], [31.82, -7.18], [31.47, -7.03], [31.32, -6.68], [30.97, -6.53], [30.82, -6.18], [30.47, -6.03], [30.25, -5.5], [30.35, -5.25], [30.25, -5.0], [30.47, -4.47]]]]}, "2021-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, -4.47], [31.0, -4.25], [31.25, -4.35], [31.32, -4.32], [31.46, -4.0], [31.25, -3.5], [31.47, -2.97], [32.0, -2.75], [32.25, -2.85], [32.5, -2.75], [33.03, -2.97], [33.18, -3.32], [33.53, -3.47], [33.75, -4.0], [33.65, -4.25], [33.75, -4.5], [33.65, -4.75], [33.75, -5.0], [33.65, -5.25], [33.75, -5.5], [33.65, -5.75], [33.75, -6.0], [33.65, -6.25], [33.75, -6.5], [33.65, -6.75], [33.75, -7.0], [33.53, -7.53], [33.0, -7.75], [32.75, -7.65], [32.5, -7.75], [31.97, -7.53], [31.82, -7.18], [31.47, -7.03], [31.32, -6.68], [30.97, -6.53], [30.82, -6.18], [30.47, -6.03], [30.25, -5.5], [30.35, -5.25], [30.25, -5.0], [30.47, -4.47]]]]}, "2021-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.97, -4.97], [31.32, -4.82], [31.35, -4.75], [31.25, -4.5], [31.46, -4.0], [31.25, -3.5], [31.47, -2.97], [32.0, -2.75], [32.25, -2.85], [32.5, -2.75], [33.03, -2.97], [33.18, -3.32], [33.53, -3.47], [33.75, -4.0], [33.65, -4.25], [33.75, -4.5], [33.65, -4.75], [33.75, -5.0], [33.65, -5.25], [33.75, -5.5], [33.53, -6.03], [33.18, -6.18], [33.03, -6.53], [32.5, -6.75], [32.25, -6.65], [32.0, -6.75], [31.75, -6.65], [31.5, -6.75], [30.97, -6.53], [30.75, -6.0], [30.85, -5.75], [30.75, -5.5], [30.97, -4.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.71176100377852}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6764044776413674}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.773392450216818, 20.364233063035044, 20.893066098087274, 21.097189213869797]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.068192341239126, 19.676982753857885, 20.13800196916361, 20.43929416122768]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.584383604792851, -2.034517891963278, -1.5437424304505936, -1.472334309915007]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1576670063047914, -2.71176100377852, -2.364230413362975, -1.9960422075924953]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.710624118585315, -2.1973791140294656, -1.662885924362602, -1.6184510705338506]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.166009415529427, -2.9219982092157712, -2.3719084455870307, -2.1811443121419503]}}