{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:23.024934", "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": "2012-Sep-02_to_2012-Sep-04_47.0_37.0"}, "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": 2012090000200}, "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": "September 02 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 04 2012"}, "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": 63915.83898501972}, "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": ["Azerbaijan", "Iran"]}, "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": 37.0}, "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": 45.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, 38.25], [44.75, 38.5], [44.85, 38.75], [44.75, 39.0], [44.97, 39.53], [45.5, 39.75], [46.03, 39.53], [46.18, 39.18], [46.25, 39.15], [46.5, 39.25], [47.03, 39.03], [47.2, 38.63], [47.32, 38.68], [47.47, 39.03], [48.0, 39.25], [48.53, 39.03], [48.68, 38.68], [49.03, 38.53], [49.25, 38.0], [49.15, 37.75], [49.25, 37.5], [49.15, 37.25], [49.18, 37.18], [49.53, 37.03], [49.68, 36.68], [50.03, 36.53], [50.25, 36.0], [50.15, 35.75], [50.25, 35.5], [50.03, 34.97], [49.5, 34.75], [48.97, 34.97], [48.82, 35.32], [48.75, 35.35], [48.5, 35.25], [47.97, 35.47], [47.82, 35.82], [47.75, 35.85], [47.5, 35.75], [46.97, 35.97], [46.82, 36.32], [46.47, 36.47], [46.32, 36.82], [46.0, 36.96], [45.5, 36.75], [44.97, 36.97], [44.75, 37.5], [44.85, 37.75], [44.75, 38.0], [44.85, 38.25]]]]}, "2012-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, 38.25], [44.75, 38.5], [44.85, 38.75], [44.75, 39.0], [44.97, 39.53], [45.5, 39.75], [46.03, 39.53], [46.18, 39.18], [46.25, 39.15], [46.5, 39.25], [47.03, 39.03], [47.2, 38.63], [47.32, 38.68], [47.47, 39.03], [48.0, 39.25], [48.53, 39.03], [48.68, 38.68], [49.03, 38.53], [49.25, 38.0], [49.15, 37.75], [49.25, 37.5], [49.15, 37.25], [49.18, 37.18], [49.53, 37.03], [49.68, 36.68], [50.03, 36.53], [50.25, 36.0], [50.15, 35.75], [50.25, 35.5], [50.03, 34.97], [49.5, 34.75], [48.97, 34.97], [48.82, 35.32], [48.75, 35.35], [48.5, 35.25], [47.97, 35.47], [47.82, 35.82], [47.75, 35.85], [47.5, 35.75], [46.97, 35.97], [46.82, 36.32], [46.47, 36.47], [46.32, 36.82], [46.0, 36.96], [45.5, 36.75], [44.97, 36.97], [44.75, 37.5], [44.85, 37.75], [44.75, 38.0], [44.85, 38.25]]]]}, "2012-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, 38.25], [44.75, 38.5], [44.85, 38.75], [44.75, 39.0], [44.97, 39.53], [45.5, 39.75], [46.03, 39.53], [46.18, 39.18], [46.25, 39.15], [46.5, 39.25], [47.03, 39.03], [47.2, 38.63], [47.32, 38.68], [47.47, 39.03], [48.0, 39.25], [48.53, 39.03], [48.68, 38.68], [49.03, 38.53], [49.25, 38.0], [49.15, 37.75], [49.25, 37.5], [49.15, 37.25], [49.18, 37.18], [49.53, 37.03], [49.68, 36.68], [50.03, 36.53], [50.25, 36.0], [50.15, 35.75], [50.25, 35.5], [50.03, 34.97], [49.5, 34.75], [48.97, 34.97], [48.82, 35.32], [48.75, 35.35], [48.5, 35.25], [47.97, 35.47], [47.82, 35.82], [47.75, 35.85], [47.5, 35.75], [46.97, 35.97], [46.82, 36.32], [46.47, 36.47], [46.32, 36.82], [46.0, 36.96], [45.5, 36.75], [44.97, 36.97], [44.75, 37.5], [44.85, 37.75], [44.75, 38.0], [44.85, 38.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.547815709222732}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.371764070722831}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.89684331004355, 15.238859491769063, 15.767756825660342]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.840628977791027, 11.429437718864335, 11.811020462170916]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.635426240931399, -5.128877344407777, -4.350988626829316]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.52148517721929, -6.547815709222732, -5.372699104709056]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4392104262854346, -2.0527151014456746, -1.7415053666287947]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6620481043669433, -2.3107142327495476, -2.05229929842209]}}