{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:59.981352", "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-Mar-26_to_2026-Mar-29_47.0_33.0"}, "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": 2026030000691}, "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": "March 26 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 29 2026"}, "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": 55002.46135672256}, "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": ["Iran", "Iraq"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "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": 33.0}, "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": 47.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "47.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 44.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 47.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, 32.25], [44.25, 32.5], [44.35, 32.75], [44.25, 33.0], [44.47, 33.53], [45.0, 33.75], [45.25, 33.65], [45.5, 33.75], [46.03, 33.53], [46.18, 33.18], [46.25, 33.15], [46.32, 33.18], [46.47, 33.53], [47.0, 33.75], [47.25, 33.65], [47.5, 33.75], [48.03, 33.53], [48.25, 33.0], [48.15, 32.75], [48.25, 32.5], [48.03, 31.97], [47.68, 31.82], [47.53, 31.47], [47.18, 31.32], [47.15, 31.25], [47.25, 31.0], [47.03, 30.47], [46.5, 30.25], [46.25, 30.35], [46.0, 30.25], [45.75, 30.35], [45.5, 30.25], [44.97, 30.47], [44.82, 30.82], [44.47, 30.97], [44.25, 31.5], [44.35, 31.75], [44.25, 32.0], [44.35, 32.25]]]]}, "2026-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, 32.25], [44.25, 32.5], [44.35, 32.75], [44.25, 33.0], [44.47, 33.53], [45.0, 33.75], [45.25, 33.65], [45.5, 33.75], [46.03, 33.53], [46.18, 33.18], [46.25, 33.15], [46.32, 33.18], [46.47, 33.53], [47.0, 33.75], [47.25, 33.65], [47.5, 33.75], [48.03, 33.53], [48.25, 33.0], [48.15, 32.75], [48.25, 32.5], [48.03, 31.97], [47.68, 31.82], [47.53, 31.47], [47.18, 31.32], [47.15, 31.25], [47.25, 31.0], [47.03, 30.47], [46.5, 30.25], [46.25, 30.35], [46.0, 30.25], [45.75, 30.35], [45.5, 30.25], [44.97, 30.47], [44.82, 30.82], [44.47, 30.97], [44.25, 31.5], [44.35, 31.75], [44.25, 32.0], [44.35, 32.25]]]]}, "2026-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.35, 32.25], [44.25, 32.5], [44.35, 32.75], [44.25, 33.0], [44.47, 33.53], [45.0, 33.75], [45.25, 33.65], [45.5, 33.75], [46.03, 33.53], [46.18, 33.18], [46.25, 33.15], [46.32, 33.18], [46.47, 33.53], [47.0, 33.75], [47.25, 33.65], [47.5, 33.75], [48.03, 33.53], [48.25, 33.0], [48.15, 32.75], [48.25, 32.5], [48.03, 31.97], [47.68, 31.82], [47.53, 31.47], [47.18, 31.32], [47.15, 31.25], [47.25, 31.0], [47.03, 30.47], [46.5, 30.25], [46.25, 30.35], [46.0, 30.25], [45.75, 30.35], [45.5, 30.25], [44.97, 30.47], [44.82, 30.82], [44.47, 30.97], [44.25, 31.5], [44.35, 31.75], [44.25, 32.0], [44.35, 32.25]]]]}, "2026-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.0, 33.75], [47.53, 33.53], [47.75, 33.0], [47.53, 32.47], [47.0, 32.25], [46.47, 32.47], [46.25, 33.0], [46.47, 33.53], [47.0, 33.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.613435151247984}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.212212715348723}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.497694481743679, 15.06022621033685, 16.57801535470145, 10.921915944417321]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.888590749104821, 7.846634165446005, 9.745286560058616, 10.921915944417321]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.157787806564822, -5.886719453635876, -4.647244554809382, -4.054825667106627]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.742621303227679, -6.613435151247984, -5.069866085378521, -4.054825667106627]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5384905695408935, -1.7334819802261223, -1.358535241090879, -1.2597310780714175]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6845214233882864, -2.0627176535311538, -1.4975706845081556, -1.2597310780714175]}}