{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:14.447910", "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": "2015-Jun-26_to_2015-Jul-03_52.5_27.0"}, "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": 2015060000993}, "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 26 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 03 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 68402.94293589798}, "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": ["Arabian-Peninsula", "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": ["Persian Gulf"]}, "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": 27.0}, "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": 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": 52.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 59.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 27.47], [51.75, 28.0], [51.97, 28.53], [52.5, 28.75], [52.75, 28.65], [52.82, 28.68], [52.97, 29.03], [53.5, 29.25], [54.03, 29.03], [54.18, 28.68], [54.25, 28.65], [54.5, 28.75], [55.03, 28.53], [55.25, 28.0], [55.03, 27.47], [54.5, 27.25], [54.25, 27.35], [54.0, 27.25], [53.75, 27.35], [53.5, 27.25], [53.25, 27.35], [53.0, 27.25], [52.75, 27.35], [52.5, 27.25], [51.97, 27.47]]]]}, "2015-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 27.47], [51.75, 28.0], [51.97, 28.53], [52.5, 28.75], [52.75, 28.65], [52.82, 28.68], [52.97, 29.03], [53.5, 29.25], [54.03, 29.03], [54.18, 28.68], [54.25, 28.65], [54.5, 28.75], [54.75, 28.65], [54.82, 28.68], [54.97, 29.03], [55.5, 29.25], [56.03, 29.03], [56.18, 28.68], [56.25, 28.65], [56.5, 28.75], [56.75, 28.65], [56.82, 28.68], [56.97, 29.03], [57.5, 29.25], [57.75, 29.15], [58.0, 29.25], [58.53, 29.03], [58.68, 28.68], [58.75, 28.65], [59.0, 28.75], [59.53, 28.53], [59.75, 28.0], [59.53, 27.47], [59.0, 27.25], [58.75, 27.35], [58.5, 27.25], [58.25, 27.35], [58.0, 27.25], [57.75, 27.35], [57.5, 27.25], [57.25, 27.35], [57.0, 27.25], [56.75, 27.35], [56.5, 27.25], [56.25, 27.35], [56.0, 27.25], [55.75, 27.35], [55.5, 27.25], [55.25, 27.35], [55.0, 27.25], [54.75, 27.35], [54.5, 27.25], [54.25, 27.35], [54.0, 27.25], [53.75, 27.35], [53.5, 27.25], [53.25, 27.35], [53.0, 27.25], [52.75, 27.35], [52.5, 27.25], [51.97, 27.47]]]]}, "2015-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 27.47], [51.75, 28.0], [51.97, 28.53], [52.5, 28.75], [52.75, 28.65], [52.82, 28.68], [52.97, 29.03], [53.5, 29.25], [54.03, 29.03], [54.18, 28.68], [54.25, 28.65], [54.5, 28.75], [54.75, 28.65], [54.82, 28.68], [54.97, 29.03], [55.5, 29.25], [56.03, 29.03], [56.18, 28.68], [56.25, 28.65], [56.5, 28.75], [56.75, 28.65], [56.82, 28.68], [56.97, 29.03], [57.5, 29.25], [57.75, 29.15], [58.0, 29.25], [58.53, 29.03], [58.68, 28.68], [58.75, 28.65], [59.0, 28.75], [59.53, 28.53], [59.75, 28.0], [59.53, 27.47], [59.0, 27.25], [58.75, 27.35], [58.5, 27.25], [58.25, 27.35], [58.0, 27.25], [57.75, 27.35], [57.5, 27.25], [57.25, 27.35], [57.0, 27.25], [56.75, 27.35], [56.5, 27.25], [56.25, 27.35], [56.0, 27.25], [55.75, 27.35], [55.5, 27.25], [55.25, 27.35], [55.0, 27.25], [54.75, 27.35], [54.5, 27.25], [54.25, 27.35], [54.0, 27.25], [53.75, 27.35], [53.5, 27.25], [53.25, 27.35], [53.0, 27.25], [52.75, 27.35], [52.5, 27.25], [51.97, 27.47]]]]}, "2015-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 28.03], [52.5, 28.25], [53.03, 28.03], [53.18, 27.68], [53.53, 27.53], [53.7, 27.13], [54.0, 27.25], [54.53, 27.03], [54.75, 26.5], [54.53, 25.97], [54.0, 25.75], [53.47, 25.97], [53.3, 26.38], [53.0, 26.25], [52.47, 26.47], [52.32, 26.82], [51.97, 26.97], [51.75, 27.5], [51.97, 28.03]]], [[[56.03, 29.03], [56.18, 28.68], [56.25, 28.65], [56.5, 28.75], [56.75, 28.65], [56.82, 28.68], [56.97, 29.03], [57.5, 29.25], [57.75, 29.15], [58.0, 29.25], [58.53, 29.03], [58.68, 28.68], [58.75, 28.65], [59.0, 28.75], [59.53, 28.53], [59.75, 28.0], [59.53, 27.47], [59.0, 27.25], [58.75, 27.35], [58.5, 27.25], [58.25, 27.35], [58.0, 27.25], [57.75, 27.35], [57.5, 27.25], [57.25, 27.35], [57.0, 27.25], [56.75, 27.35], [56.5, 27.25], [56.25, 27.35], [56.0, 27.25], [55.75, 27.35], [55.5, 27.25], [55.25, 27.35], [55.0, 27.25], [54.47, 27.47], [54.25, 28.0], [54.47, 28.53], [54.82, 28.68], [54.97, 29.03], [55.5, 29.25], [56.03, 29.03]]]]}, "2015-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 28.03], [52.5, 28.25], [53.03, 28.03], [53.18, 27.68], [53.53, 27.53], [53.68, 27.18], [53.75, 27.15], [54.0, 27.25], [54.53, 27.03], [54.75, 26.5], [54.53, 25.97], [54.18, 25.82], [54.03, 25.47], [53.5, 25.25], [52.97, 25.47], [52.82, 25.82], [52.47, 25.97], [52.32, 26.32], [51.97, 26.47], [51.75, 27.0], [51.85, 27.25], [51.75, 27.5], [51.97, 28.03]]]]}, "2015-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, 28.03], [52.5, 28.25], [53.03, 28.03], [53.18, 27.68], [53.53, 27.53], [53.68, 27.18], [53.75, 27.15], [54.0, 27.25], [54.53, 27.03], [54.75, 26.5], [54.53, 25.97], [54.18, 25.82], [54.03, 25.47], [53.5, 25.25], [52.97, 25.47], [52.82, 25.82], [52.47, 25.97], [52.32, 26.32], [51.97, 26.47], [51.75, 27.0], [51.85, 27.25], [51.75, 27.5], [51.97, 28.03]]]]}, "2015-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.75, 27.0], [51.97, 27.53], [52.5, 27.75], [53.03, 27.53], [53.18, 27.18], [53.25, 27.15], [53.5, 27.25], [53.75, 27.15], [54.0, 27.25], [54.53, 27.03], [54.75, 26.5], [54.53, 25.97], [54.18, 25.82], [54.03, 25.47], [53.5, 25.25], [52.97, 25.47], [52.82, 25.82], [52.47, 25.97], [52.32, 26.32], [51.97, 26.47], [51.75, 27.0]]]]}, "2015-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.75, 27.0], [51.97, 27.53], [52.5, 27.75], [53.03, 27.53], [53.18, 27.18], [53.53, 27.03], [53.75, 26.5], [53.53, 25.97], [53.0, 25.75], [52.47, 25.97], [52.32, 26.32], [51.97, 26.47], [51.75, 27.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.34909753593206}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.5528075703744584}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [31.61386252918379, 30.837520252469233, 30.766479415296942, 31.464906649508805, 29.8773486652467, 30.1154322910333, 29.985766522004496, 29.760790515814676]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.211870123786298, 27.82509465376137, 27.80771425317124, 28.5865634887885, 29.42154025658664, 29.523813791949067, 29.788129182641626, 29.622349504348392]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.247566230897585, -3.1082734302324457, -3.2372942719202564, -2.2415927496955645, -1.9431549941681314, -1.7267718941568302, -1.6174430879462194, -2.006389780817159]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4339890110289844, -3.793456919817345, -4.34909753593206, -2.6158870907800633, -2.054704471955347, -1.9081543230573743, -1.8836834377132163, -2.1894799339629003]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5679913041105695, -2.0059316839675927, -2.087313053494934, -1.5881358404567214, -1.8277315049257543, -1.5793434171746117, -1.4927287094923622, -1.681006994930277]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6861333229076885, -2.5581861273829682, -2.719635958996705, -1.826621619728771, -1.9868141289296972, -1.8590605844831727, -1.5898297906036754, -1.7610024491810592]}}