{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:23.284553", "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-May-28_to_2013-May-31_46.5_23.0"}, "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": 2013050001149}, "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": "May 28 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 31 2013"}, "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": 104048.02729806353}, "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": ["Saudi Arabia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 23.0}, "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": 46.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "46.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 46.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.5, 23.75], [47.03, 23.53], [47.25, 23.0], [47.03, 22.47], [46.5, 22.25], [45.97, 22.47], [45.75, 23.0], [45.97, 23.53], [46.5, 23.75]]]]}, "2013-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.97, 24.03], [46.32, 24.18], [46.35, 24.25], [46.25, 24.5], [46.35, 24.75], [46.25, 25.0], [46.35, 25.25], [46.25, 25.5], [46.47, 26.03], [47.0, 26.25], [47.5, 26.04], [47.82, 26.18], [47.85, 26.25], [47.75, 26.5], [47.97, 27.03], [48.5, 27.25], [48.75, 27.15], [49.0, 27.25], [49.53, 27.03], [49.75, 26.5], [49.63, 26.2], [50.03, 26.03], [50.18, 25.68], [50.53, 25.53], [50.68, 25.18], [51.03, 25.03], [51.25, 24.5], [51.03, 23.97], [50.68, 23.82], [50.53, 23.47], [50.0, 23.25], [49.75, 23.35], [49.5, 23.25], [49.25, 23.35], [49.18, 23.32], [49.03, 22.97], [48.68, 22.82], [48.53, 22.47], [48.0, 22.25], [47.75, 22.35], [47.5, 22.25], [47.0, 22.46], [46.5, 22.25], [45.97, 22.47], [45.75, 23.0], [45.85, 23.25], [45.75, 23.5], [45.97, 24.03]]]]}, "2013-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.97, 24.03], [46.32, 24.18], [46.35, 24.25], [46.25, 24.5], [46.35, 24.75], [46.25, 25.0], [46.35, 25.25], [46.25, 25.5], [46.47, 26.03], [47.0, 26.25], [47.5, 26.04], [47.82, 26.18], [47.85, 26.25], [47.75, 26.5], [47.97, 27.03], [48.5, 27.25], [48.75, 27.15], [49.0, 27.25], [49.53, 27.03], [49.75, 26.5], [49.63, 26.2], [50.03, 26.03], [50.18, 25.68], [50.53, 25.53], [50.68, 25.18], [51.03, 25.03], [51.25, 24.5], [51.03, 23.97], [50.68, 23.82], [50.53, 23.47], [50.0, 23.25], [49.75, 23.35], [49.5, 23.25], [49.25, 23.35], [49.18, 23.32], [49.03, 22.97], [48.68, 22.82], [48.53, 22.47], [48.0, 22.25], [47.75, 22.35], [47.5, 22.25], [47.0, 22.46], [46.5, 22.25], [45.97, 22.47], [45.75, 23.0], [45.85, 23.25], [45.75, 23.5], [45.97, 24.03]]]]}, "2013-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.97, 24.03], [46.32, 24.18], [46.35, 24.25], [46.25, 24.5], [46.35, 24.75], [46.25, 25.0], [46.35, 25.25], [46.25, 25.5], [46.47, 26.03], [47.0, 26.25], [47.5, 26.04], [47.82, 26.18], [47.85, 26.25], [47.75, 26.5], [47.97, 27.03], [48.5, 27.25], [48.75, 27.15], [49.0, 27.25], [49.53, 27.03], [49.75, 26.5], [49.63, 26.2], [50.03, 26.03], [50.18, 25.68], [50.53, 25.53], [50.68, 25.18], [51.03, 25.03], [51.25, 24.5], [51.03, 23.97], [50.68, 23.82], [50.53, 23.47], [50.0, 23.25], [49.75, 23.35], [49.5, 23.25], [49.25, 23.35], [49.18, 23.32], [49.03, 22.97], [48.68, 22.82], [48.53, 22.47], [48.0, 22.25], [47.75, 22.35], [47.5, 22.25], [47.0, 22.46], [46.5, 22.25], [45.97, 22.47], [45.75, 23.0], [45.85, 23.25], [45.75, 23.5], [45.97, 24.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.3258395244894245}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0899586822632323}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [32.06334907123636, 32.320951167048065, 31.674131037525854, 31.863882064491918]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [32.06334907123636, 31.24322990698556, 30.47744690943472, 30.96678970121968]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8147851481133443, -2.57811701822351, -3.3988089095479426, -3.327414268589862]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8147851481133443, -2.8789991588616886, -3.8561005872664396, -4.3258395244894245]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2480849887989338, -1.5514227373809895, -2.048602526863385, -1.9478767647546902]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2480849887989338, -1.8314626104328429, -2.3628238722601926, -2.541021567010916]}}