{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:36.668823", "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": "2023-Mar-31_to_2023-Apr-03_44.0_37.5"}, "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": 2023030001042}, "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 31 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 03 2023"}, "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": 252600.17441625454}, "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", "Turkiye"]}, "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": 37.5}, "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": 44.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 42.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.35, 33.75], [42.25, 34.0], [42.35, 34.25], [42.25, 34.5], [42.35, 34.75], [42.25, 35.0], [42.35, 35.25], [42.25, 35.5], [42.47, 36.03], [42.82, 36.18], [42.85, 36.25], [42.82, 36.32], [42.47, 36.47], [42.25, 37.0], [42.47, 37.53], [43.0, 37.75], [43.3, 37.63], [43.47, 38.03], [44.0, 38.25], [44.25, 38.15], [44.5, 38.25], [45.03, 38.03], [45.18, 37.68], [45.53, 37.53], [45.75, 37.0], [45.65, 36.75], [45.68, 36.68], [46.03, 36.53], [46.18, 36.18], [46.53, 36.03], [46.75, 35.5], [46.65, 35.25], [46.75, 35.0], [46.65, 34.75], [46.75, 34.5], [46.65, 34.25], [46.75, 34.0], [46.65, 33.75], [46.75, 33.5], [46.65, 33.25], [46.75, 33.0], [46.65, 32.75], [46.75, 32.5], [46.65, 32.25], [46.68, 32.18], [47.03, 32.03], [47.25, 31.5], [47.03, 30.97], [46.68, 30.82], [46.53, 30.47], [46.0, 30.25], [45.75, 30.35], [45.68, 30.32], [45.53, 29.97], [45.0, 29.75], [44.47, 29.97], [44.32, 30.32], [43.97, 30.47], [43.82, 30.82], [43.47, 30.97], [43.25, 31.5], [43.35, 31.75], [43.25, 32.0], [43.35, 32.25], [43.3, 32.38], [43.0, 32.25], [42.47, 32.47], [42.25, 33.0], [42.35, 33.25], [42.25, 33.5], [42.35, 33.75]]]]}, "2023-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.35, 33.75], [42.25, 34.0], [42.35, 34.25], [42.25, 34.5], [42.35, 34.75], [42.25, 35.0], [42.35, 35.25], [42.25, 35.5], [42.47, 36.03], [42.82, 36.18], [42.85, 36.25], [42.82, 36.32], [42.47, 36.47], [42.25, 37.0], [42.47, 37.53], [43.0, 37.75], [43.3, 37.63], [43.47, 38.03], [44.0, 38.25], [44.25, 38.15], [44.5, 38.25], [45.03, 38.03], [45.18, 37.68], [45.53, 37.53], [45.75, 37.0], [45.65, 36.75], [45.68, 36.68], [46.03, 36.53], [46.18, 36.18], [46.53, 36.03], [46.75, 35.5], [46.65, 35.25], [46.75, 35.0], [46.65, 34.75], [46.75, 34.5], [46.65, 34.25], [46.75, 34.0], [46.65, 33.75], [46.68, 33.68], [47.03, 33.53], [47.18, 33.18], [47.25, 33.15], [47.5, 33.25], [48.0, 33.04], [48.5, 33.25], [48.75, 33.15], [49.0, 33.25], [49.53, 33.03], [49.68, 32.68], [50.03, 32.53], [50.18, 32.18], [50.53, 32.03], [50.75, 31.5], [50.65, 31.25], [50.68, 31.18], [51.03, 31.03], [51.25, 30.5], [51.03, 29.97], [50.5, 29.75], [50.25, 29.85], [50.0, 29.75], [49.75, 29.85], [49.5, 29.75], [48.97, 29.97], [48.82, 30.32], [48.47, 30.47], [48.32, 30.82], [48.25, 30.85], [48.0, 30.75], [47.47, 30.97], [47.32, 31.32], [47.2, 31.38], [47.04, 31.0], [47.25, 30.5], [47.03, 29.97], [46.5, 29.75], [45.97, 29.97], [45.82, 30.32], [45.75, 30.35], [45.68, 30.32], [45.53, 29.97], [45.0, 29.75], [44.47, 29.97], [44.32, 30.32], [43.97, 30.47], [43.82, 30.82], [43.47, 30.97], [43.25, 31.5], [43.35, 31.75], [43.25, 32.0], [43.35, 32.25], [43.3, 32.38], [43.0, 32.25], [42.47, 32.47], [42.25, 33.0], [42.35, 33.25], [42.25, 33.5], [42.35, 33.75]]]]}, "2023-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.35, 33.75], [42.25, 34.0], [42.35, 34.25], [42.25, 34.5], [42.35, 34.75], [42.25, 35.0], [42.35, 35.25], [42.25, 35.5], [42.47, 36.03], [42.82, 36.18], [42.85, 36.25], [42.82, 36.32], [42.47, 36.47], [42.25, 37.0], [42.47, 37.53], [43.0, 37.75], [43.3, 37.63], [43.47, 38.03], [44.0, 38.25], [44.25, 38.15], [44.5, 38.25], [45.03, 38.03], [45.18, 37.68], [45.53, 37.53], [45.75, 37.0], [45.65, 36.75], [45.68, 36.68], [46.03, 36.53], [46.18, 36.18], [46.53, 36.03], [46.75, 35.5], [46.65, 35.25], [46.75, 35.0], [46.65, 34.75], [46.75, 34.5], [46.65, 34.25], [46.75, 34.0], [46.65, 33.75], [46.68, 33.68], [47.03, 33.53], [47.18, 33.18], [47.25, 33.15], [47.5, 33.25], [48.0, 33.04], [48.5, 33.25], [48.75, 33.15], [49.0, 33.25], [49.53, 33.03], [49.68, 32.68], [50.03, 32.53], [50.18, 32.18], [50.53, 32.03], [50.75, 31.5], [50.65, 31.25], [50.68, 31.18], [51.03, 31.03], [51.25, 30.5], [51.03, 29.97], [50.5, 29.75], [50.25, 29.85], [50.0, 29.75], [49.75, 29.85], [49.5, 29.75], [48.97, 29.97], [48.82, 30.32], [48.47, 30.47], [48.32, 30.82], [48.25, 30.85], [48.0, 30.75], [47.47, 30.97], [47.32, 31.32], [47.2, 31.38], [47.04, 31.0], [47.25, 30.5], [47.03, 29.97], [46.5, 29.75], [45.97, 29.97], [45.82, 30.32], [45.75, 30.35], [45.68, 30.32], [45.53, 29.97], [45.0, 29.75], [44.47, 29.97], [44.32, 30.32], [43.97, 30.47], [43.82, 30.82], [43.47, 30.97], [43.25, 31.5], [43.35, 31.75], [43.25, 32.0], [43.35, 32.25], [43.3, 32.38], [43.0, 32.25], [42.47, 32.47], [42.25, 33.0], [42.35, 33.25], [42.25, 33.5], [42.35, 33.75]]]]}, "2023-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.47, 31.53], [46.0, 31.75], [46.53, 31.53], [46.68, 31.18], [47.03, 31.03], [47.25, 30.5], [47.03, 29.97], [46.5, 29.75], [45.97, 29.97], [45.82, 30.32], [45.47, 30.47], [45.25, 31.0], [45.47, 31.53]]], [[[46.5, 33.75], [47.03, 33.53], [47.18, 33.18], [47.25, 33.15], [47.5, 33.25], [48.0, 33.04], [48.5, 33.25], [48.75, 33.15], [49.0, 33.25], [49.53, 33.03], [49.68, 32.68], [50.03, 32.53], [50.18, 32.18], [50.53, 32.03], [50.75, 31.5], [50.65, 31.25], [50.68, 31.18], [51.03, 31.03], [51.25, 30.5], [51.03, 29.97], [50.5, 29.75], [50.25, 29.85], [50.0, 29.75], [49.75, 29.85], [49.5, 29.75], [48.97, 29.97], [48.82, 30.32], [48.47, 30.47], [48.32, 30.82], [48.25, 30.85], [48.0, 30.75], [47.47, 30.97], [47.32, 31.32], [46.97, 31.47], [46.82, 31.82], [46.75, 31.85], [46.5, 31.75], [45.97, 31.97], [45.75, 32.5], [45.85, 32.75], [45.75, 33.0], [45.97, 33.53], [46.5, 33.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.106367148694574}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.516182106845297}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.720763074591105, 11.162094161200457, 13.3733350125745, 16.718710104272247]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-5.349390689011045, -6.892438744758692, -2.8540374969141453, 10.178063022476863]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.327331141787951, -7.747233308636005, -5.840178168837944, -4.83989837886746]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.234521825434172, -9.106367148694574, -7.601499165998121, -5.663047181401623]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8856147930523772, -2.348074516898301, -1.7980712096091034, -1.584188124645144]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6131940962724816, -3.1141618508561457, -2.371909746935274, -1.8042841162370087]}}