{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:36.973604", "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": "2020-Jul-01_to_2020-Jul-04_57.0_21.5"}, "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": 2020070000053}, "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": "July 01 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 04 2020"}, "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": 51803.91605843558}, "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"]}, "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": 21.5}, "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": 57.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "57.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 55.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 57.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[55.35, 21.25], [55.25, 21.5], [55.35, 21.75], [55.25, 22.0], [55.47, 22.53], [56.0, 22.75], [56.25, 22.65], [56.32, 22.68], [56.47, 23.03], [57.0, 23.25], [57.25, 23.15], [57.5, 23.25], [58.03, 23.03], [58.25, 22.5], [58.15, 22.25], [58.25, 22.0], [58.15, 21.75], [58.25, 21.5], [58.15, 21.25], [58.25, 21.0], [58.15, 20.75], [58.25, 20.5], [58.03, 19.97], [57.5, 19.75], [57.25, 19.85], [57.0, 19.75], [56.75, 19.85], [56.5, 19.75], [56.25, 19.85], [56.0, 19.75], [55.47, 19.97], [55.25, 20.5], [55.35, 20.75], [55.25, 21.0], [55.35, 21.25]]]]}, "2020-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[55.35, 21.25], [55.25, 21.5], [55.35, 21.75], [55.25, 22.0], [55.47, 22.53], [56.0, 22.75], [56.25, 22.65], [56.32, 22.68], [56.47, 23.03], [57.0, 23.25], [57.25, 23.15], [57.5, 23.25], [58.03, 23.03], [58.25, 22.5], [58.15, 22.25], [58.25, 22.0], [58.15, 21.75], [58.25, 21.5], [58.15, 21.25], [58.25, 21.0], [58.15, 20.75], [58.25, 20.5], [58.03, 19.97], [57.5, 19.75], [57.25, 19.85], [57.0, 19.75], [56.75, 19.85], [56.5, 19.75], [56.25, 19.85], [56.0, 19.75], [55.47, 19.97], [55.25, 20.5], [55.35, 20.75], [55.25, 21.0], [55.35, 21.25]]]]}, "2020-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[55.35, 21.25], [55.25, 21.5], [55.35, 21.75], [55.25, 22.0], [55.47, 22.53], [56.0, 22.75], [56.25, 22.65], [56.32, 22.68], [56.47, 23.03], [57.0, 23.25], [57.25, 23.15], [57.5, 23.25], [58.03, 23.03], [58.25, 22.5], [58.15, 22.25], [58.25, 22.0], [58.15, 21.75], [58.25, 21.5], [58.15, 21.25], [58.25, 21.0], [58.15, 20.75], [58.25, 20.5], [58.03, 19.97], [57.5, 19.75], [57.25, 19.85], [57.0, 19.75], [56.75, 19.85], [56.5, 19.75], [56.25, 19.85], [56.0, 19.75], [55.47, 19.97], [55.25, 20.5], [55.35, 20.75], [55.25, 21.0], [55.35, 21.25]]]]}, "2020-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.47, 22.03], [57.0, 22.25], [57.53, 22.03], [57.68, 21.68], [58.03, 21.53], [58.25, 21.0], [58.15, 20.75], [58.25, 20.5], [58.03, 19.97], [57.5, 19.75], [56.97, 19.97], [56.82, 20.32], [56.47, 20.47], [56.25, 21.0], [56.35, 21.25], [56.25, 21.5], [56.47, 22.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.139303910454942}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.101105135287526}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.237048040583716, 31.50998777164557, 32.30122626644368, 31.21524696307995]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.378053751663685, 29.045976946573262, 29.78414276425582, 30.506768248934634]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.199060379339588, -4.909549776748621, -4.102406074863918, -4.516451422384549]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.273615773122856, -5.976233925745532, -6.139303910454942, -4.99409130648354]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6157261986276517, -2.494196473656562, -2.0390966323000552, -1.9197315626242308]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9583406689923908, -3.173696882715684, -2.912769305118586, -2.0963662773401683]}}