{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-27 03:10:35.025897", "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": "2026-Jul-11_to_2026-Jul-16_39.5_18.5"}, "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": 2026070000431}, "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 11 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 16 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 91316.26068048387}, "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": ["Eritrea", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "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": ["Red Sea"]}, "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": 18.5}, "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": 39.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.75, 18.5], [38.97, 19.03], [39.5, 19.25], [40.03, 19.03], [40.25, 18.5], [40.13, 18.2], [40.53, 18.03], [40.75, 17.5], [40.53, 16.97], [40.0, 16.75], [39.47, 16.97], [39.25, 17.5], [39.38, 17.8], [38.97, 17.97], [38.75, 18.5]]]]}, "2026-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.97, 19.53], [39.32, 19.68], [39.47, 20.03], [40.0, 20.25], [40.53, 20.03], [40.75, 19.5], [40.65, 19.25], [40.68, 19.18], [41.03, 19.03], [41.25, 18.5], [41.15, 18.25], [41.25, 18.0], [41.15, 17.75], [41.25, 17.5], [41.15, 17.25], [41.18, 17.18], [41.53, 17.03], [41.75, 16.5], [41.65, 16.25], [41.75, 16.0], [41.53, 15.47], [41.0, 15.25], [40.7, 15.38], [40.53, 14.97], [40.0, 14.75], [39.47, 14.97], [39.25, 15.5], [39.47, 16.03], [39.88, 16.2], [39.75, 16.5], [39.85, 16.75], [39.82, 16.82], [39.47, 16.97], [39.25, 17.5], [39.38, 17.8], [38.97, 17.97], [38.75, 18.5], [38.85, 18.75], [38.75, 19.0], [38.97, 19.53]]]]}, "2026-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.85, 18.75], [37.75, 19.0], [37.97, 19.53], [38.5, 19.75], [38.75, 19.65], [39.0, 19.75], [39.25, 19.65], [39.32, 19.68], [39.47, 20.03], [40.0, 20.25], [40.53, 20.03], [40.75, 19.5], [40.65, 19.25], [40.68, 19.18], [41.03, 19.03], [41.25, 18.5], [41.15, 18.25], [41.25, 18.0], [41.15, 17.75], [41.18, 17.68], [41.53, 17.53], [41.75, 17.0], [41.65, 16.75], [41.75, 16.5], [41.65, 16.25], [41.75, 16.0], [41.53, 15.47], [41.0, 15.25], [40.7, 15.38], [40.53, 14.97], [40.0, 14.75], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.82, 16.32], [38.47, 16.47], [38.25, 17.0], [38.35, 17.25], [38.32, 17.32], [37.97, 17.47], [37.75, 18.0], [37.85, 18.25], [37.75, 18.5], [37.85, 18.75]]]]}, "2026-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.85, 18.75], [37.75, 19.0], [37.97, 19.53], [38.5, 19.75], [38.75, 19.65], [39.0, 19.75], [39.25, 19.65], [39.32, 19.68], [39.47, 20.03], [40.0, 20.25], [40.53, 20.03], [40.75, 19.5], [40.65, 19.25], [40.68, 19.18], [41.03, 19.03], [41.25, 18.5], [41.15, 18.25], [41.25, 18.0], [41.15, 17.75], [41.18, 17.68], [41.53, 17.53], [41.75, 17.0], [41.65, 16.75], [41.75, 16.5], [41.65, 16.25], [41.75, 16.0], [41.53, 15.47], [41.0, 15.25], [40.7, 15.38], [40.53, 14.97], [40.0, 14.75], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.82, 16.32], [38.47, 16.47], [38.25, 17.0], [38.35, 17.25], [38.32, 17.32], [37.97, 17.47], [37.75, 18.0], [37.85, 18.25], [37.75, 18.5], [37.85, 18.75]]]]}, "2026-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.85, 18.75], [37.75, 19.0], [37.97, 19.53], [38.5, 19.75], [38.75, 19.65], [39.0, 19.75], [39.25, 19.65], [39.5, 19.75], [39.75, 19.65], [40.0, 19.75], [40.53, 19.53], [40.68, 19.18], [41.03, 19.03], [41.25, 18.5], [41.15, 18.25], [41.25, 18.0], [41.15, 17.75], [41.18, 17.68], [41.53, 17.53], [41.75, 17.0], [41.65, 16.75], [41.75, 16.5], [41.53, 15.97], [41.0, 15.75], [40.75, 15.85], [40.68, 15.82], [40.65, 15.75], [40.75, 15.5], [40.53, 14.97], [40.0, 14.75], [39.47, 14.97], [39.32, 15.32], [38.97, 15.47], [38.75, 16.0], [38.85, 16.25], [38.82, 16.32], [38.47, 16.47], [38.25, 17.0], [38.35, 17.25], [38.32, 17.32], [37.97, 17.47], [37.75, 18.0], [37.85, 18.25], [37.75, 18.5], [37.85, 18.75]]]]}, "2026-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.85, 18.75], [37.75, 19.0], [37.97, 19.53], [38.5, 19.75], [38.75, 19.65], [39.0, 19.75], [39.53, 19.53], [39.75, 19.0], [39.65, 18.75], [39.75, 18.5], [39.65, 18.25], [39.75, 18.0], [39.65, 17.75], [39.68, 17.68], [40.03, 17.53], [40.25, 17.0], [40.03, 16.47], [39.5, 16.25], [38.97, 16.47], [38.82, 16.82], [38.47, 16.97], [38.32, 17.32], [37.97, 17.47], [37.75, 18.0], [37.85, 18.25], [37.75, 18.5], [37.85, 18.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.745049478293481}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2621173938158459}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.79499715169277, 30.93740779331756, 30.90957818800399, 30.856540811190087, 31.04883144860986, 31.14297765096029]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.643345133463583, 30.198655700683616, 30.145247395833337, 30.1357195536296, 30.446286773681663, 30.42209142049154]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9957929653941164, -0.9066043340740423, -1.2700162403786979, -1.3692226730117083, -1.250808654990835, -1.54619954639508]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0990263297227898, -1.0663127460869077, -2.745049478293481, -2.708087242539989, -2.203837986246697, -2.4007160220855326]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5520024921219315, -1.5899341450510853, -1.876181544236705, -1.993317230742184, -1.7311831054742632, -1.8253689158941964]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6423637875057775, -1.9295864916427794, -2.627584211013481, -2.703390688893147, -2.3225589208300566, -2.672724970264254]}}