{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:37.779253", "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": "2013-Jun-28_to_2013-Jul-01_52.5_35.5"}, "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": 2013060001203}, "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": "June 28 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 01 2013"}, "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": 233122.23182854475}, "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"]}, "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": 35.5}, "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": 52.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "52.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 50.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 58.75}, "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": 36.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[50.47, 34.53], [51.0, 34.75], [51.25, 34.65], [51.38, 34.7], [51.32, 34.82], [50.97, 34.97], [50.82, 35.32], [50.47, 35.47], [50.25, 36.0], [50.47, 36.53], [51.0, 36.75], [51.25, 36.65], [51.5, 36.75], [51.75, 36.65], [52.0, 36.75], [52.53, 36.53], [52.68, 36.18], [52.75, 36.15], [53.0, 36.25], [53.53, 36.03], [53.75, 35.5], [53.65, 35.25], [53.68, 35.18], [54.03, 35.03], [54.2, 34.63], [54.5, 34.75], [55.03, 34.53], [55.2, 34.13], [55.5, 34.25], [55.75, 34.15], [55.82, 34.18], [55.97, 34.53], [56.32, 34.68], [56.35, 34.75], [56.25, 35.0], [56.35, 35.25], [56.25, 35.5], [56.47, 36.03], [57.0, 36.25], [57.25, 36.15], [57.5, 36.25], [58.03, 36.03], [58.25, 35.5], [58.13, 35.2], [58.25, 35.15], [58.5, 35.25], [59.03, 35.03], [59.25, 34.5], [59.03, 33.97], [58.68, 33.82], [58.53, 33.47], [58.18, 33.32], [58.03, 32.97], [57.5, 32.75], [57.2, 32.88], [57.03, 32.47], [56.68, 32.32], [56.65, 32.25], [56.75, 32.0], [56.53, 31.47], [56.0, 31.25], [55.75, 31.35], [55.68, 31.32], [55.53, 30.97], [55.18, 30.82], [55.03, 30.47], [54.5, 30.25], [53.97, 30.47], [53.82, 30.82], [53.47, 30.97], [53.32, 31.32], [53.25, 31.35], [53.18, 31.32], [53.03, 30.97], [52.5, 30.75], [52.25, 30.85], [52.0, 30.75], [51.47, 30.97], [51.25, 31.5], [51.35, 31.75], [51.25, 32.0], [51.35, 32.25], [51.32, 32.32], [51.25, 32.35], [51.0, 32.25], [50.47, 32.47], [50.25, 33.0], [50.46, 33.5], [50.25, 34.0], [50.47, 34.53]]]]}, "2013-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[50.47, 34.53], [51.0, 34.75], [51.25, 34.65], [51.38, 34.7], [51.32, 34.82], [50.97, 34.97], [50.82, 35.32], [50.47, 35.47], [50.25, 36.0], [50.47, 36.53], [51.0, 36.75], [51.25, 36.65], [51.5, 36.75], [51.75, 36.65], [52.0, 36.75], [52.53, 36.53], [52.68, 36.18], [52.75, 36.15], [53.0, 36.25], [53.53, 36.03], [53.75, 35.5], [53.65, 35.25], [53.68, 35.18], [54.03, 35.03], [54.2, 34.63], [54.5, 34.75], [55.03, 34.53], [55.2, 34.13], [55.5, 34.25], [55.75, 34.15], [55.82, 34.18], [55.97, 34.53], [56.32, 34.68], [56.35, 34.75], [56.25, 35.0], [56.35, 35.25], [56.25, 35.5], [56.47, 36.03], [57.0, 36.25], [57.25, 36.15], [57.5, 36.25], [58.03, 36.03], [58.25, 35.5], [58.13, 35.2], [58.25, 35.15], [58.5, 35.25], [59.03, 35.03], [59.25, 34.5], [59.03, 33.97], [58.68, 33.82], [58.53, 33.47], [58.18, 33.32], [58.15, 33.25], [58.18, 33.18], [58.53, 33.03], [58.75, 32.5], [58.53, 31.97], [58.0, 31.75], [57.7, 31.88], [57.65, 31.75], [57.75, 31.5], [57.65, 31.25], [57.75, 31.0], [57.53, 30.47], [57.0, 30.25], [56.47, 30.47], [56.32, 30.82], [56.25, 30.85], [56.18, 30.82], [56.15, 30.75], [56.25, 30.5], [56.03, 29.97], [55.5, 29.75], [55.25, 29.85], [55.0, 29.75], [54.75, 29.85], [54.5, 29.75], [54.25, 29.85], [54.0, 29.75], [53.75, 29.85], [53.5, 29.75], [52.97, 29.97], [52.75, 30.5], [52.93, 30.93], [52.5, 30.75], [52.25, 30.85], [52.0, 30.75], [51.47, 30.97], [51.25, 31.5], [51.35, 31.75], [51.25, 32.0], [51.35, 32.25], [51.32, 32.32], [51.25, 32.35], [51.0, 32.25], [50.47, 32.47], [50.25, 33.0], [50.46, 33.5], [50.25, 34.0], [50.47, 34.53]], [[53.32, 31.18], [53.35, 31.25], [53.32, 31.32], [53.25, 31.35], [53.18, 31.32], [53.07, 31.07], [53.32, 31.18]]]]}, "2013-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[50.47, 34.53], [51.0, 34.75], [51.25, 34.65], [51.38, 34.7], [51.32, 34.82], [50.97, 34.97], [50.82, 35.32], [50.47, 35.47], [50.25, 36.0], [50.47, 36.53], [51.0, 36.75], [51.25, 36.65], [51.5, 36.75], [51.75, 36.65], [52.0, 36.75], [52.53, 36.53], [52.68, 36.18], [52.75, 36.15], [53.0, 36.25], [53.53, 36.03], [53.75, 35.5], [53.65, 35.25], [53.68, 35.18], [54.03, 35.03], [54.2, 34.63], [54.5, 34.75], [55.03, 34.53], [55.2, 34.13], [55.5, 34.25], [55.75, 34.15], [55.82, 34.18], [55.97, 34.53], [56.32, 34.68], [56.35, 34.75], [56.25, 35.0], [56.35, 35.25], [56.25, 35.5], [56.47, 36.03], [57.0, 36.25], [57.25, 36.15], [57.5, 36.25], [58.03, 36.03], [58.25, 35.5], [58.13, 35.2], [58.25, 35.15], [58.5, 35.25], [59.03, 35.03], [59.25, 34.5], [59.03, 33.97], [58.68, 33.82], [58.53, 33.47], [58.18, 33.32], [58.15, 33.25], [58.18, 33.18], [58.53, 33.03], [58.75, 32.5], [58.53, 31.97], [58.0, 31.75], [57.7, 31.88], [57.65, 31.75], [57.75, 31.5], [57.65, 31.25], [57.75, 31.0], [57.53, 30.47], [57.0, 30.25], [56.47, 30.47], [56.32, 30.82], [56.25, 30.85], [56.18, 30.82], [56.15, 30.75], [56.25, 30.5], [56.03, 29.97], [55.5, 29.75], [55.25, 29.85], [55.0, 29.75], [54.75, 29.85], [54.5, 29.75], [54.25, 29.85], [54.0, 29.75], [53.75, 29.85], [53.5, 29.75], [52.97, 29.97], [52.75, 30.5], [52.93, 30.93], [52.5, 30.75], [52.25, 30.85], [52.0, 30.75], [51.47, 30.97], [51.25, 31.5], [51.35, 31.75], [51.25, 32.0], [51.35, 32.25], [51.32, 32.32], [51.25, 32.35], [51.0, 32.25], [50.47, 32.47], [50.25, 33.0], [50.46, 33.5], [50.25, 34.0], [50.47, 34.53]], [[53.32, 31.18], [53.35, 31.25], [53.32, 31.32], [53.25, 31.35], [53.18, 31.32], [53.07, 31.07], [53.32, 31.18]]]]}, "2013-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.47, 32.03], [54.0, 32.25], [54.25, 32.15], [54.5, 32.25], [54.75, 32.15], [54.82, 32.18], [54.97, 32.53], [55.5, 32.75], [56.0, 32.54], [56.5, 32.75], [56.75, 32.65], [56.88, 32.7], [56.75, 33.0], [56.97, 33.53], [57.5, 33.75], [58.03, 33.53], [58.18, 33.18], [58.53, 33.03], [58.75, 32.5], [58.53, 31.97], [58.0, 31.75], [57.7, 31.88], [57.65, 31.75], [57.75, 31.5], [57.65, 31.25], [57.75, 31.0], [57.53, 30.47], [57.0, 30.25], [56.47, 30.47], [56.32, 30.82], [56.25, 30.85], [56.18, 30.82], [56.15, 30.75], [56.25, 30.5], [56.03, 29.97], [55.5, 29.75], [55.25, 29.85], [55.0, 29.75], [54.75, 29.85], [54.5, 29.75], [54.25, 29.85], [54.0, 29.75], [53.75, 29.85], [53.5, 29.75], [52.97, 29.97], [52.75, 30.5], [52.97, 31.03], [53.32, 31.18], [53.35, 31.25], [53.25, 31.5], [53.47, 32.03]]], [[[50.75, 36.0], [50.97, 36.53], [51.5, 36.75], [52.03, 36.53], [52.2, 36.13], [52.5, 36.25], [53.03, 36.03], [53.25, 35.5], [53.03, 34.97], [52.5, 34.75], [51.97, 34.97], [51.8, 35.38], [51.5, 35.25], [50.97, 35.47], [50.75, 36.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.217513423544688}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.8848098876467585}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.61428577637946, 26.535788414240756, 27.689764047361393, 27.45020614848545]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.559331292222112, 11.053830237109764, 12.031497374317212, 16.764986967149696]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.1681229765982115, -4.416979926027921, -3.4219770973549424, -2.763051228417664]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.92794607455113, -7.217513423544688, -5.9682126269192395, -3.7650931648637993]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9123752629785686, -2.1353127565864107, -1.7112601368953206, -1.5135524175175092]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5667529979636465, -3.066179361670936, -2.6052478974822155, -1.695954501686359]}}