{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:39.967861", "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": "2012-Jun-16_to_2012-Jun-19_54.5_18.5"}, "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": 2012060000781}, "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 16 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 2012"}, "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": 64846.0505728452}, "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": ["Oman", "Yemen"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "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": 18.5}, "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": 54.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "54.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 50.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 55.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.0, 18.25], [51.25, 18.15], [51.5, 18.25], [51.75, 18.15], [52.0, 18.25], [52.25, 18.15], [52.32, 18.18], [52.47, 18.53], [53.0, 18.75], [53.25, 18.65], [53.32, 18.68], [53.47, 19.03], [54.0, 19.25], [54.25, 19.15], [54.5, 19.25], [55.03, 19.03], [55.25, 18.5], [55.03, 17.97], [54.68, 17.82], [54.65, 17.75], [54.75, 17.5], [54.53, 16.97], [54.18, 16.82], [54.03, 16.47], [53.5, 16.25], [53.25, 16.35], [53.0, 16.25], [52.75, 16.35], [52.5, 16.25], [52.25, 16.35], [52.0, 16.25], [51.75, 16.35], [51.5, 16.25], [51.25, 16.35], [51.0, 16.25], [50.75, 16.35], [50.5, 16.25], [49.97, 16.47], [49.75, 17.0], [49.97, 17.53], [50.32, 17.68], [50.47, 18.03], [51.0, 18.25]]]]}, "2012-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.0, 18.25], [51.25, 18.15], [51.5, 18.25], [51.75, 18.15], [52.0, 18.25], [52.25, 18.15], [52.32, 18.18], [52.47, 18.53], [53.0, 18.75], [53.25, 18.65], [53.32, 18.68], [53.47, 19.03], [54.0, 19.25], [54.25, 19.15], [54.5, 19.25], [55.03, 19.03], [55.25, 18.5], [55.15, 18.25], [55.18, 18.18], [55.53, 18.03], [55.75, 17.5], [55.53, 16.97], [55.0, 16.75], [54.75, 16.85], [54.5, 16.75], [54.25, 16.85], [54.18, 16.82], [54.03, 16.47], [53.5, 16.25], [53.25, 16.35], [53.0, 16.25], [52.75, 16.35], [52.5, 16.25], [52.25, 16.35], [52.0, 16.25], [51.75, 16.35], [51.5, 16.25], [51.25, 16.35], [51.0, 16.25], [50.75, 16.35], [50.5, 16.25], [49.97, 16.47], [49.75, 17.0], [49.97, 17.53], [50.32, 17.68], [50.47, 18.03], [51.0, 18.25]]]]}, "2012-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.0, 18.25], [51.25, 18.15], [51.5, 18.25], [51.75, 18.15], [52.0, 18.25], [52.25, 18.15], [52.32, 18.18], [52.47, 18.53], [53.0, 18.75], [53.25, 18.65], [53.32, 18.68], [53.47, 19.03], [54.0, 19.25], [54.25, 19.15], [54.5, 19.25], [55.03, 19.03], [55.25, 18.5], [55.15, 18.25], [55.18, 18.18], [55.53, 18.03], [55.75, 17.5], [55.53, 16.97], [55.0, 16.75], [54.75, 16.85], [54.5, 16.75], [54.25, 16.85], [54.18, 16.82], [54.03, 16.47], [53.5, 16.25], [53.25, 16.35], [53.0, 16.25], [52.75, 16.35], [52.5, 16.25], [52.25, 16.35], [52.0, 16.25], [51.75, 16.35], [51.5, 16.25], [51.25, 16.35], [51.0, 16.25], [50.75, 16.35], [50.5, 16.25], [49.97, 16.47], [49.75, 17.0], [49.97, 17.53], [50.32, 17.68], [50.47, 18.03], [51.0, 18.25]]]]}, "2012-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.75, 18.5], [53.97, 19.03], [54.5, 19.25], [55.03, 19.03], [55.25, 18.5], [55.15, 18.25], [55.18, 18.18], [55.53, 18.03], [55.75, 17.5], [55.53, 16.97], [55.0, 16.75], [54.75, 16.85], [54.5, 16.75], [54.25, 16.85], [54.0, 16.75], [53.47, 16.97], [53.25, 17.5], [53.47, 18.03], [53.82, 18.18], [53.85, 18.25], [53.75, 18.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.099416350209367}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.8311828137382054}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.292194242565586, 28.641776424950308, 28.753418902692545, 28.846652786389768]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.21109530327584, 23.943200147971424, 23.870643480560318, 26.206818740994038]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6006891642717456, -3.0940375363366313, -2.920958982367037, -2.1554827603108153]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.389964041877306, -4.099416350209367, -3.8246496091269364, -2.4134372610461696]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5243516199750013, -1.8786745693761615, -1.8536048312433786, -1.3704956563864887]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8398189174004382, -2.4410469283811023, -2.24730185919371, -1.5632693142969925]}}