{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:16.076011", "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-May-26_to_2022-May-28_47.0_32.5"}, "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": 2022050000980}, "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 26 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 28 2022"}, "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": 52580.58741819314}, "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", "Iraq"]}, "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": []}, "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": 32.5}, "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": 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": 45.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 48.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[44.47, 33.03], [45.0, 33.25], [45.3, 33.13], [45.47, 33.53], [46.0, 33.75], [46.53, 33.53], [46.68, 33.18], [46.75, 33.15], [47.0, 33.25], [47.25, 33.15], [47.5, 33.25], [48.03, 33.03], [48.25, 32.5], [48.15, 32.25], [48.25, 32.0], [48.15, 31.75], [48.18, 31.68], [48.53, 31.53], [48.75, 31.0], [48.65, 30.75], [48.75, 30.5], [48.53, 29.97], [48.0, 29.75], [47.5, 29.96], [47.0, 29.75], [46.47, 29.97], [46.32, 30.32], [45.97, 30.47], [45.82, 30.82], [45.75, 30.85], [45.5, 30.75], [44.97, 30.97], [44.75, 31.5], [44.85, 31.75], [44.82, 31.82], [44.47, 31.97], [44.25, 32.5], [44.47, 33.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia", "Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.47, 31.97], [44.25, 32.5], [44.47, 33.03], [45.0, 33.25], [45.3, 33.13], [45.47, 33.53], [46.0, 33.75], [46.53, 33.53], [46.68, 33.18], [46.75, 33.15], [47.0, 33.25], [47.25, 33.15], [47.5, 33.25], [48.03, 33.03], [48.25, 32.5], [48.15, 32.25], [48.25, 32.0], [48.15, 31.75], [48.18, 31.68], [48.53, 31.53], [48.75, 31.0], [48.65, 30.75], [48.75, 30.5], [48.53, 29.97], [48.0, 29.75], [47.5, 29.96], [47.0, 29.75], [46.47, 29.97], [46.32, 30.32], [45.97, 30.47], [45.82, 30.82], [45.75, 30.85], [45.5, 30.75], [44.97, 30.97], [44.75, 31.5], [44.85, 31.75], [44.82, 31.82], [44.47, 31.97]]]]}, "2022-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.47, 31.97], [44.25, 32.5], [44.47, 33.03], [45.0, 33.25], [45.3, 33.13], [45.47, 33.53], [46.0, 33.75], [46.53, 33.53], [46.68, 33.18], [46.75, 33.15], [47.0, 33.25], [47.25, 33.15], [47.5, 33.25], [48.03, 33.03], [48.25, 32.5], [48.15, 32.25], [48.25, 32.0], [48.15, 31.75], [48.18, 31.68], [48.53, 31.53], [48.75, 31.0], [48.65, 30.75], [48.75, 30.5], [48.53, 29.97], [48.0, 29.75], [47.5, 29.96], [47.0, 29.75], [46.47, 29.97], [46.32, 30.32], [45.97, 30.47], [45.82, 30.82], [45.75, 30.85], [45.5, 30.75], [44.97, 30.97], [44.75, 31.5], [44.85, 31.75], [44.82, 31.82], [44.47, 31.97]]]]}, "2022-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.47, 31.97], [44.25, 32.5], [44.47, 33.03], [45.0, 33.25], [45.3, 33.13], [45.47, 33.53], [46.0, 33.75], [46.53, 33.53], [46.68, 33.18], [46.75, 33.15], [47.0, 33.25], [47.25, 33.15], [47.5, 33.25], [48.03, 33.03], [48.25, 32.5], [48.15, 32.25], [48.25, 32.0], [48.15, 31.75], [48.18, 31.68], [48.53, 31.53], [48.75, 31.0], [48.65, 30.75], [48.75, 30.5], [48.53, 29.97], [48.0, 29.75], [47.5, 29.96], [47.0, 29.75], [46.47, 29.97], [46.32, 30.32], [45.97, 30.47], [45.82, 30.82], [45.75, 30.85], [45.5, 30.75], [44.97, 30.97], [44.75, 31.5], [44.85, 31.75], [44.82, 31.82], [44.47, 31.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.172726648671755}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.3260460604498663}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.381099385104676, 31.740906648143664, 32.43207622951343]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.711635777659694, 29.932383329362324, 30.550203351249024]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.5544880875969342, -3.441619011789746, -2.9820310819629183]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.172726648671755, -3.972709504638374, -3.458106886098733]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5963351062478714, -1.5689808657862812, -1.4081879506759756]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7970158539203998, -1.89420678504661, -1.6788039947473776]}}