{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:21.047972", "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": "2022-Nov-07_to_2022-Nov-10_54.0_38.0"}, "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": 2022110000307}, "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": "November 07 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 10 2022"}, "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": 68031.77406018191}, "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, Islamic Republic of", "Turkmenistan"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": ["Caspian 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": 38.0}, "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": 54.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "54.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 53.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 57.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[53.32, 38.82], [52.97, 38.97], [52.75, 39.5], [52.97, 40.03], [53.5, 40.25], [54.03, 40.03], [54.18, 39.68], [54.25, 39.65], [54.5, 39.75], [54.75, 39.65], [55.0, 39.75], [55.25, 39.65], [55.5, 39.75], [55.75, 39.65], [56.0, 39.75], [56.53, 39.53], [56.68, 39.18], [56.75, 39.15], [57.0, 39.25], [57.53, 39.03], [57.75, 38.5], [57.53, 37.97], [57.13, 37.8], [57.25, 37.5], [57.03, 36.97], [56.5, 36.75], [56.0, 36.96], [55.68, 36.82], [55.53, 36.47], [55.0, 36.25], [54.75, 36.35], [54.5, 36.25], [53.97, 36.47], [53.82, 36.82], [53.75, 36.85], [53.5, 36.75], [52.97, 36.97], [52.82, 37.32], [52.47, 37.47], [52.25, 38.0], [52.47, 38.53], [53.0, 38.75], [53.25, 38.65], [53.32, 38.68], [53.35, 38.75], [53.32, 38.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.47, 37.47], [52.25, 38.0], [52.47, 38.53], [53.0, 38.75], [53.25, 38.65], [53.32, 38.68], [53.35, 38.75], [53.32, 38.82], [52.97, 38.97], [52.75, 39.5], [52.97, 40.03], [53.5, 40.25], [54.03, 40.03], [54.18, 39.68], [54.25, 39.65], [54.5, 39.75], [54.75, 39.65], [55.0, 39.75], [55.25, 39.65], [55.5, 39.75], [55.75, 39.65], [56.0, 39.75], [56.53, 39.53], [56.68, 39.18], [56.75, 39.15], [57.0, 39.25], [57.53, 39.03], [57.75, 38.5], [57.53, 37.97], [57.13, 37.8], [57.25, 37.5], [57.03, 36.97], [56.5, 36.75], [56.0, 36.96], [55.68, 36.82], [55.53, 36.47], [55.0, 36.25], [54.75, 36.35], [54.5, 36.25], [53.97, 36.47], [53.82, 36.82], [53.75, 36.85], [53.5, 36.75], [52.97, 36.97], [52.82, 37.32], [52.47, 37.47]]]]}, "2022-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.47, 37.47], [52.25, 38.0], [52.47, 38.53], [53.0, 38.75], [53.25, 38.65], [53.32, 38.68], [53.35, 38.75], [53.32, 38.82], [52.97, 38.97], [52.75, 39.5], [52.97, 40.03], [53.5, 40.25], [54.03, 40.03], [54.18, 39.68], [54.25, 39.65], [54.5, 39.75], [54.75, 39.65], [55.0, 39.75], [55.25, 39.65], [55.5, 39.75], [55.75, 39.65], [56.0, 39.75], [56.53, 39.53], [56.68, 39.18], [56.75, 39.15], [57.0, 39.25], [57.53, 39.03], [57.75, 38.5], [57.53, 37.97], [57.13, 37.8], [57.25, 37.5], [57.03, 36.97], [56.5, 36.75], [56.0, 36.96], [55.68, 36.82], [55.53, 36.47], [55.0, 36.25], [54.75, 36.35], [54.5, 36.25], [53.97, 36.47], [53.82, 36.82], [53.75, 36.85], [53.5, 36.75], [52.97, 36.97], [52.82, 37.32], [52.47, 37.47]]]]}, "2022-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.47, 37.47], [52.25, 38.0], [52.47, 38.53], [53.0, 38.75], [53.25, 38.65], [53.32, 38.68], [53.35, 38.75], [53.32, 38.82], [52.97, 38.97], [52.75, 39.5], [52.97, 40.03], [53.5, 40.25], [54.03, 40.03], [54.18, 39.68], [54.25, 39.65], [54.5, 39.75], [54.75, 39.65], [55.0, 39.75], [55.25, 39.65], [55.5, 39.75], [55.75, 39.65], [56.0, 39.75], [56.53, 39.53], [56.68, 39.18], [56.75, 39.15], [57.0, 39.25], [57.53, 39.03], [57.75, 38.5], [57.53, 37.97], [57.13, 37.8], [57.25, 37.5], [57.03, 36.97], [56.5, 36.75], [56.0, 36.96], [55.68, 36.82], [55.53, 36.47], [55.0, 36.25], [54.75, 36.35], [54.5, 36.25], [53.97, 36.47], [53.82, 36.82], [53.75, 36.85], [53.5, 36.75], [52.97, 36.97], [52.82, 37.32], [52.47, 37.47]]]]}, "2022-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.25, 38.0], [53.35, 38.25], [53.25, 38.5], [53.47, 39.03], [54.0, 39.25], [54.25, 39.15], [54.5, 39.25], [55.03, 39.03], [55.18, 38.68], [55.25, 38.65], [55.5, 38.75], [56.03, 38.53], [56.25, 38.0], [56.03, 37.47], [55.68, 37.32], [55.53, 36.97], [55.0, 36.75], [54.75, 36.85], [54.5, 36.75], [54.25, 36.85], [54.0, 36.75], [53.47, 36.97], [53.25, 37.5], [53.35, 37.75], [53.25, 38.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.892544840940616}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.310575822162327}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.708806742589616, 7.284879678898051, 7.721334200432068, 8.951551606540193]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.624967643443256, 3.6222298335432015, 4.691936685879398, 7.236118217510523]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.531642002667019, -5.729129384894583, -4.964299419270562, -4.397952096643975]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.522677895454194, -6.694530868865115, -6.892544840940616, -5.352872055077569]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6347341398661048, -1.6733369440461874, -1.4481832742880998, -1.3410973925879643]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.142178635500824, -1.9219529427096234, -2.053266191013352, -1.635717059671815]}}