{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:30.700802", "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": "2013-Jun-01_to_2013-Jun-03_4.5_29.0"}, "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": 2013060000122}, "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 01 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 03 2013"}, "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": 51800.092287535736}, "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": ["Algeria"]}, "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": 29.0}, "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": 4.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "4.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 2.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 5.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.47, 28.03], [3.0, 28.25], [3.25, 28.15], [3.32, 28.18], [3.47, 28.53], [3.82, 28.68], [3.85, 28.75], [3.75, 29.0], [3.85, 29.25], [3.75, 29.5], [3.97, 30.03], [4.5, 30.25], [5.0, 30.04], [5.5, 30.25], [6.03, 30.03], [6.25, 29.5], [6.15, 29.25], [6.25, 29.0], [6.15, 28.75], [6.25, 28.5], [6.03, 27.97], [5.68, 27.82], [5.65, 27.75], [5.75, 27.5], [5.53, 26.97], [5.0, 26.75], [4.75, 26.85], [4.68, 26.82], [4.53, 26.47], [4.0, 26.25], [3.75, 26.35], [3.5, 26.25], [3.25, 26.35], [3.0, 26.25], [2.47, 26.47], [2.25, 27.0], [2.35, 27.25], [2.25, 27.5], [2.47, 28.03]]]]}, "2013-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.47, 28.03], [3.0, 28.25], [3.25, 28.15], [3.32, 28.18], [3.47, 28.53], [3.82, 28.68], [3.85, 28.75], [3.75, 29.0], [3.85, 29.25], [3.75, 29.5], [3.97, 30.03], [4.5, 30.25], [5.0, 30.04], [5.5, 30.25], [6.03, 30.03], [6.25, 29.5], [6.15, 29.25], [6.25, 29.0], [6.15, 28.75], [6.25, 28.5], [6.03, 27.97], [5.68, 27.82], [5.65, 27.75], [5.75, 27.5], [5.53, 26.97], [5.0, 26.75], [4.75, 26.85], [4.68, 26.82], [4.53, 26.47], [4.0, 26.25], [3.75, 26.35], [3.5, 26.25], [3.25, 26.35], [3.0, 26.25], [2.47, 26.47], [2.25, 27.0], [2.35, 27.25], [2.25, 27.5], [2.47, 28.03]]]]}, "2013-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.47, 28.03], [3.0, 28.25], [3.25, 28.15], [3.32, 28.18], [3.47, 28.53], [3.82, 28.68], [3.85, 28.75], [3.75, 29.0], [3.85, 29.25], [3.75, 29.5], [3.97, 30.03], [4.5, 30.25], [5.0, 30.04], [5.5, 30.25], [6.03, 30.03], [6.25, 29.5], [6.15, 29.25], [6.25, 29.0], [6.15, 28.75], [6.25, 28.5], [6.03, 27.97], [5.68, 27.82], [5.65, 27.75], [5.75, 27.5], [5.53, 26.97], [5.0, 26.75], [4.75, 26.85], [4.68, 26.82], [4.53, 26.47], [4.0, 26.25], [3.75, 26.35], [3.5, 26.25], [3.25, 26.35], [3.0, 26.25], [2.47, 26.47], [2.25, 27.0], [2.35, 27.25], [2.25, 27.5], [2.47, 28.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.840152412364773}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.975437893686466}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.42319013494864, 26.613751823975747, 28.791160513872853]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.075551684972766, 24.63711742081182, 27.16311468569006]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.942934143957987, -5.977840068121614, -4.005539468979796]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.078690834335532, -6.840152412364773, -4.6025977331573245]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6750631202282438, -2.0917191314155756, -1.4708663013456396]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9338100722423484, -2.2112613949363475, -1.5444797961736503]}}