{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:52.770126", "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": "2019-Jun-16_to_2019-Jun-19_81.5_31.0"}, "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": 2019060000530}, "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 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 2019"}, "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": 58672.4676210112}, "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": ["China", "Nepal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau"]}, "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": 31.0}, "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": 81.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "81.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 80.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 84.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.5, 31.75], [82.03, 31.53], [82.25, 31.0], [82.03, 30.47], [81.5, 30.25], [80.97, 30.47], [80.75, 31.0], [80.97, 31.53], [81.5, 31.75]]]]}, "2019-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.35, 30.75], [80.25, 31.0], [80.35, 31.25], [80.25, 31.5], [80.47, 32.03], [81.0, 32.25], [81.53, 32.03], [81.68, 31.68], [81.75, 31.65], [82.0, 31.75], [82.25, 31.65], [82.5, 31.75], [82.75, 31.65], [83.0, 31.75], [83.25, 31.65], [83.5, 31.75], [84.03, 31.53], [84.18, 31.18], [84.53, 31.03], [84.75, 30.5], [84.53, 29.97], [84.0, 29.75], [83.75, 29.85], [83.68, 29.82], [83.65, 29.75], [83.75, 29.5], [83.65, 29.25], [83.75, 29.0], [83.53, 28.47], [83.0, 28.25], [82.47, 28.47], [82.32, 28.82], [82.25, 28.85], [82.0, 28.75], [81.47, 28.97], [81.32, 29.32], [81.25, 29.35], [81.0, 29.25], [80.47, 29.47], [80.25, 30.0], [80.35, 30.25], [80.25, 30.5], [80.35, 30.75]]]]}, "2019-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.35, 30.75], [80.25, 31.0], [80.35, 31.25], [80.25, 31.5], [80.47, 32.03], [81.0, 32.25], [81.53, 32.03], [81.68, 31.68], [81.75, 31.65], [82.0, 31.75], [82.25, 31.65], [82.5, 31.75], [82.75, 31.65], [83.0, 31.75], [83.25, 31.65], [83.5, 31.75], [84.03, 31.53], [84.18, 31.18], [84.53, 31.03], [84.75, 30.5], [84.53, 29.97], [84.0, 29.75], [83.75, 29.85], [83.68, 29.82], [83.65, 29.75], [83.75, 29.5], [83.65, 29.25], [83.75, 29.0], [83.53, 28.47], [83.0, 28.25], [82.47, 28.47], [82.32, 28.82], [82.25, 28.85], [82.0, 28.75], [81.47, 28.97], [81.32, 29.32], [81.25, 29.35], [81.0, 29.25], [80.47, 29.47], [80.25, 30.0], [80.35, 30.25], [80.25, 30.5], [80.35, 30.75]]]]}, "2019-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.35, 30.75], [80.25, 31.0], [80.35, 31.25], [80.25, 31.5], [80.47, 32.03], [81.0, 32.25], [81.53, 32.03], [81.68, 31.68], [81.75, 31.65], [82.0, 31.75], [82.25, 31.65], [82.5, 31.75], [82.75, 31.65], [83.0, 31.75], [83.25, 31.65], [83.5, 31.75], [84.03, 31.53], [84.18, 31.18], [84.53, 31.03], [84.75, 30.5], [84.53, 29.97], [84.0, 29.75], [83.75, 29.85], [83.68, 29.82], [83.65, 29.75], [83.75, 29.5], [83.65, 29.25], [83.75, 29.0], [83.53, 28.47], [83.0, 28.25], [82.47, 28.47], [82.32, 28.82], [82.25, 28.85], [82.0, 28.75], [81.47, 28.97], [81.32, 29.32], [81.25, 29.35], [81.0, 29.25], [80.47, 29.47], [80.25, 30.0], [80.35, 30.25], [80.25, 30.5], [80.35, 30.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.429264926577503}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1636158024979713}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.133328548174802, 1.2567729963985244, 1.2030701866885352, 1.7789060849149791]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-1.133328548174802, -1.8922643403073494, -2.115817809223074, -1.0807619263978836]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.9100933657600194, -3.095112126330928, -3.395013153678067, -3.0122458746093703]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9100933657600194, -4.005370902897653, -4.429264926577503, -3.641546417993368]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3154612693409744, -1.6880583169922994, -1.8667517953802886, -1.688980544252253]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3154612693409744, -2.1707891048415346, -2.221373654405905, -2.0396714899038573]}}