{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:07.643200", "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": "2015-Jun-02_to_2015-Jun-04_352.0_19.5"}, "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": 2015060000130}, "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": "June 02 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 04 2015"}, "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": 286232.81979796547}, "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", "Mauritania"]}, "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": 19.5}, "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": 352.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "352.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 348.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.25, 19.0], [-11.15, 19.25], [-11.25, 19.5], [-11.03, 20.03], [-10.68, 20.18], [-10.53, 20.53], [-10.0, 20.75], [-9.5, 20.54], [-9.0, 20.75], [-8.75, 20.65], [-8.5, 20.75], [-8.25, 20.65], [-8.0, 20.75], [-7.75, 20.65], [-7.5, 20.75], [-7.25, 20.65], [-7.18, 20.68], [-7.03, 21.03], [-6.5, 21.25], [-6.25, 21.15], [-6.0, 21.25], [-5.75, 21.15], [-5.68, 21.18], [-5.53, 21.53], [-5.0, 21.75], [-4.75, 21.65], [-4.5, 21.75], [-4.25, 21.65], [-4.0, 21.75], [-3.75, 21.65], [-3.5, 21.75], [-2.97, 21.53], [-2.82, 21.18], [-2.75, 21.15], [-2.5, 21.25], [-1.97, 21.03], [-1.75, 20.5], [-1.97, 19.97], [-2.32, 19.82], [-2.35, 19.75], [-2.32, 19.68], [-2.25, 19.65], [-2.0, 19.75], [-1.47, 19.53], [-1.25, 19.0], [-1.47, 18.47], [-2.0, 18.25], [-2.25, 18.35], [-2.32, 18.32], [-2.47, 17.97], [-3.0, 17.75], [-3.25, 17.85], [-3.32, 17.82], [-3.47, 17.47], [-4.0, 17.25], [-4.25, 17.35], [-4.32, 17.32], [-4.47, 16.97], [-5.0, 16.75], [-5.25, 16.85], [-5.5, 16.75], [-5.75, 16.85], [-6.0, 16.75], [-6.25, 16.85], [-6.5, 16.75], [-7.03, 16.97], [-7.18, 17.32], [-7.25, 17.35], [-7.5, 17.25], [-7.8, 17.38], [-7.97, 16.97], [-8.5, 16.75], [-8.75, 16.85], [-9.0, 16.75], [-9.25, 16.85], [-9.5, 16.75], [-9.75, 16.85], [-10.0, 16.75], [-10.53, 16.97], [-10.68, 17.32], [-10.75, 17.35], [-11.0, 17.25], [-11.53, 17.47], [-11.75, 18.0], [-11.53, 18.53], [-11.18, 18.68], [-11.15, 18.75], [-11.25, 19.0]]]]}, "2015-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.25, 19.0], [-11.15, 19.25], [-11.25, 19.5], [-11.03, 20.03], [-10.68, 20.18], [-10.53, 20.53], [-10.0, 20.75], [-9.5, 20.54], [-9.0, 20.75], [-8.75, 20.65], [-8.5, 20.75], [-8.25, 20.65], [-8.0, 20.75], [-7.75, 20.65], [-7.5, 20.75], [-7.25, 20.65], [-7.18, 20.68], [-7.03, 21.03], [-6.5, 21.25], [-6.25, 21.15], [-6.0, 21.25], [-5.75, 21.15], [-5.68, 21.18], [-5.53, 21.53], [-5.0, 21.75], [-4.75, 21.65], [-4.5, 21.75], [-4.25, 21.65], [-4.0, 21.75], [-3.75, 21.65], [-3.5, 21.75], [-2.97, 21.53], [-2.82, 21.18], [-2.75, 21.15], [-2.5, 21.25], [-1.97, 21.03], [-1.75, 20.5], [-1.97, 19.97], [-2.32, 19.82], [-2.35, 19.75], [-2.32, 19.68], [-2.25, 19.65], [-2.0, 19.75], [-1.47, 19.53], [-1.25, 19.0], [-1.47, 18.47], [-2.0, 18.25], [-2.25, 18.35], [-2.32, 18.32], [-2.47, 17.97], [-3.0, 17.75], [-3.25, 17.85], [-3.32, 17.82], [-3.47, 17.47], [-4.0, 17.25], [-4.25, 17.35], [-4.32, 17.32], [-4.47, 16.97], [-5.0, 16.75], [-5.25, 16.85], [-5.5, 16.75], [-5.75, 16.85], [-6.0, 16.75], [-6.25, 16.85], [-6.5, 16.75], [-7.03, 16.97], [-7.18, 17.32], [-7.25, 17.35], [-7.5, 17.25], [-7.8, 17.38], [-7.97, 16.97], [-8.5, 16.75], [-8.75, 16.85], [-9.0, 16.75], [-9.25, 16.85], [-9.5, 16.75], [-9.75, 16.85], [-10.0, 16.75], [-10.53, 16.97], [-10.68, 17.32], [-10.75, 17.35], [-11.0, 17.25], [-11.53, 17.47], [-11.75, 18.0], [-11.53, 18.53], [-11.18, 18.68], [-11.15, 18.75], [-11.25, 19.0]]]]}, "2015-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.25, 19.0], [-11.15, 19.25], [-11.25, 19.5], [-11.03, 20.03], [-10.68, 20.18], [-10.53, 20.53], [-10.0, 20.75], [-9.5, 20.54], [-9.0, 20.75], [-8.75, 20.65], [-8.5, 20.75], [-8.25, 20.65], [-8.0, 20.75], [-7.75, 20.65], [-7.5, 20.75], [-7.25, 20.65], [-7.18, 20.68], [-7.03, 21.03], [-6.5, 21.25], [-6.25, 21.15], [-6.0, 21.25], [-5.75, 21.15], [-5.68, 21.18], [-5.53, 21.53], [-5.0, 21.75], [-4.75, 21.65], [-4.5, 21.75], [-4.25, 21.65], [-4.0, 21.75], [-3.75, 21.65], [-3.5, 21.75], [-2.97, 21.53], [-2.82, 21.18], [-2.75, 21.15], [-2.5, 21.25], [-1.97, 21.03], [-1.75, 20.5], [-1.97, 19.97], [-2.32, 19.82], [-2.35, 19.75], [-2.32, 19.68], [-2.25, 19.65], [-2.0, 19.75], [-1.47, 19.53], [-1.25, 19.0], [-1.47, 18.47], [-2.0, 18.25], [-2.25, 18.35], [-2.32, 18.32], [-2.47, 17.97], [-3.0, 17.75], [-3.25, 17.85], [-3.32, 17.82], [-3.47, 17.47], [-4.0, 17.25], [-4.25, 17.35], [-4.32, 17.32], [-4.47, 16.97], [-5.0, 16.75], [-5.25, 16.85], [-5.5, 16.75], [-5.75, 16.85], [-6.0, 16.75], [-6.25, 16.85], [-6.5, 16.75], [-7.03, 16.97], [-7.18, 17.32], [-7.25, 17.35], [-7.5, 17.25], [-7.8, 17.38], [-7.97, 16.97], [-8.5, 16.75], [-8.75, 16.85], [-9.0, 16.75], [-9.25, 16.85], [-9.5, 16.75], [-9.75, 16.85], [-10.0, 16.75], [-10.53, 16.97], [-10.68, 17.32], [-10.75, 17.35], [-11.0, 17.25], [-11.53, 17.47], [-11.75, 18.0], [-11.53, 18.53], [-11.18, 18.68], [-11.15, 18.75], [-11.25, 19.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.243960898492901}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.100969205530482}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.82729282915915, 29.907311226271418, 31.691015920438304]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.867976722183585, 27.292760090733907, 29.642781594373275]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.0012415025575687, -4.005265155597877, -2.2964009584359983]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.243960898492901, -5.0171670987385255, -3.2185626439423345]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8584828608109687, -2.60117088622406, -1.559472891706679]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.786013268690352, -3.0071628228311, -2.334999729550025]}}