{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:59.824602", "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": "2020-Aug-03_to_2020-Aug-05_3.5_18.0"}, "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": 2020080000178}, "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": "August 03 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 05 2020"}, "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": 106311.9183667351}, "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": ["Mali"]}, "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": []}, "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": 18.0}, "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": 3.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "3.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -0.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 4.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.0, 17.75], [0.25, 17.65], [0.5, 17.75], [0.75, 17.65], [1.0, 17.75], [1.25, 17.65], [1.32, 17.68], [1.46, 18.0], [1.25, 18.5], [1.47, 19.03], [2.0, 19.25], [2.25, 19.15], [2.5, 19.25], [2.75, 19.15], [3.0, 19.25], [3.25, 19.15], [3.5, 19.25], [3.75, 19.15], [4.0, 19.25], [4.53, 19.03], [4.75, 18.5], [4.65, 18.25], [4.75, 18.0], [4.65, 17.75], [4.75, 17.5], [4.65, 17.25], [4.75, 17.0], [4.65, 16.75], [4.75, 16.5], [4.53, 15.97], [4.18, 15.82], [4.03, 15.47], [3.5, 15.25], [3.25, 15.35], [3.0, 15.25], [2.47, 15.47], [2.32, 15.82], [2.25, 15.85], [2.0, 15.75], [1.75, 15.85], [1.68, 15.82], [1.53, 15.47], [1.0, 15.25], [0.47, 15.47], [0.32, 15.82], [0.25, 15.85], [0.0, 15.75], [-0.25, 15.85], [-0.5, 15.75], [-1.03, 15.97], [-1.25, 16.5], [-1.03, 17.03], [-0.68, 17.18], [-0.53, 17.53], [0.0, 17.75]]]]}, "2020-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.0, 17.75], [0.25, 17.65], [0.5, 17.75], [0.75, 17.65], [1.0, 17.75], [1.25, 17.65], [1.32, 17.68], [1.46, 18.0], [1.25, 18.5], [1.47, 19.03], [2.0, 19.25], [2.25, 19.15], [2.5, 19.25], [2.75, 19.15], [3.0, 19.25], [3.25, 19.15], [3.5, 19.25], [3.75, 19.15], [4.0, 19.25], [4.53, 19.03], [4.75, 18.5], [4.65, 18.25], [4.75, 18.0], [4.65, 17.75], [4.75, 17.5], [4.65, 17.25], [4.75, 17.0], [4.65, 16.75], [4.75, 16.5], [4.53, 15.97], [4.18, 15.82], [4.03, 15.47], [3.5, 15.25], [3.25, 15.35], [3.0, 15.25], [2.47, 15.47], [2.32, 15.82], [2.25, 15.85], [2.0, 15.75], [1.75, 15.85], [1.68, 15.82], [1.53, 15.47], [1.0, 15.25], [0.47, 15.47], [0.32, 15.82], [0.25, 15.85], [0.0, 15.75], [-0.25, 15.85], [-0.5, 15.75], [-1.03, 15.97], [-1.25, 16.5], [-1.03, 17.03], [-0.68, 17.18], [-0.53, 17.53], [0.0, 17.75]]]]}, "2020-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.0, 17.75], [0.25, 17.65], [0.5, 17.75], [0.75, 17.65], [1.0, 17.75], [1.25, 17.65], [1.32, 17.68], [1.46, 18.0], [1.25, 18.5], [1.47, 19.03], [2.0, 19.25], [2.25, 19.15], [2.5, 19.25], [2.75, 19.15], [3.0, 19.25], [3.25, 19.15], [3.5, 19.25], [3.75, 19.15], [4.0, 19.25], [4.53, 19.03], [4.75, 18.5], [4.65, 18.25], [4.75, 18.0], [4.65, 17.75], [4.75, 17.5], [4.65, 17.25], [4.75, 17.0], [4.65, 16.75], [4.75, 16.5], [4.53, 15.97], [4.18, 15.82], [4.03, 15.47], [3.5, 15.25], [3.25, 15.35], [3.0, 15.25], [2.47, 15.47], [2.32, 15.82], [2.25, 15.85], [2.0, 15.75], [1.75, 15.85], [1.68, 15.82], [1.53, 15.47], [1.0, 15.25], [0.47, 15.47], [0.32, 15.82], [0.25, 15.85], [0.0, 15.75], [-0.25, 15.85], [-0.5, 15.75], [-1.03, 15.97], [-1.25, 16.5], [-1.03, 17.03], [-0.68, 17.18], [-0.53, 17.53], [0.0, 17.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.731532078402438}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.328696113517789}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.38278938181861, 26.921053129935103, 28.704048225495285]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.842191407426355, 26.246555892438835, 27.773456891365186]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.957566461876684, -5.412256255561047, -3.616265623115636]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.922307162833931, -6.731532078402438, -4.954706124477411]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0464178674638176, -2.8500818179116134, -1.8934531246577946]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6781708351614126, -4.060386587083987, -2.7857036089376006]}}