{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:06.953668", "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": "2024-Sep-09_to_2024-Sep-14_96.0_21.0"}, "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": 2024090000239}, "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": "September 09 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 14 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 147518.90541081605}, "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", "Myanmar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.Asia", "S.E.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": 21.0}, "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": 96.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "96.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 93.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 100.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.97, 21.53], [98.38, 21.7], [98.25, 22.0], [98.47, 22.53], [99.0, 22.75], [99.25, 22.65], [99.5, 22.75], [100.03, 22.53], [100.18, 22.18], [100.25, 22.15], [100.5, 22.25], [101.03, 22.03], [101.25, 21.5], [101.03, 20.97], [100.5, 20.75], [100.25, 20.85], [100.0, 20.75], [99.75, 20.85], [99.68, 20.82], [99.53, 20.47], [99.18, 20.32], [99.03, 19.97], [98.5, 19.75], [97.97, 19.97], [97.75, 20.5], [97.85, 20.75], [97.75, 21.0], [97.97, 21.53]]]]}, "2024-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[94.85, 19.75], [94.75, 20.0], [94.97, 20.53], [95.32, 20.68], [95.35, 20.75], [95.32, 20.82], [94.97, 20.97], [94.75, 21.5], [94.97, 22.03], [95.32, 22.18], [95.47, 22.53], [96.0, 22.75], [96.5, 22.54], [97.0, 22.75], [97.25, 22.65], [97.5, 22.75], [98.03, 22.53], [98.18, 22.18], [98.3, 22.13], [98.47, 22.53], [99.0, 22.75], [99.25, 22.65], [99.5, 22.75], [100.03, 22.53], [100.18, 22.18], [100.25, 22.15], [100.5, 22.25], [101.03, 22.03], [101.25, 21.5], [101.03, 20.97], [100.5, 20.75], [100.25, 20.85], [100.0, 20.75], [99.75, 20.85], [99.68, 20.82], [99.53, 20.47], [99.18, 20.32], [99.03, 19.97], [98.5, 19.75], [98.2, 19.88], [98.03, 19.47], [97.68, 19.32], [97.53, 18.97], [97.18, 18.82], [97.15, 18.75], [97.25, 18.5], [97.03, 17.97], [96.5, 17.75], [95.97, 17.97], [95.82, 18.32], [95.75, 18.35], [95.5, 18.25], [94.97, 18.47], [94.75, 19.0], [94.85, 19.25], [94.75, 19.5], [94.85, 19.75]]]]}, "2024-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[93.85, 20.25], [93.75, 20.5], [93.85, 20.75], [93.75, 21.0], [93.97, 21.53], [94.32, 21.68], [94.47, 22.03], [94.82, 22.18], [94.97, 22.53], [95.5, 22.75], [95.75, 22.65], [96.0, 22.75], [96.5, 22.54], [97.0, 22.75], [97.25, 22.65], [97.5, 22.75], [98.03, 22.53], [98.18, 22.18], [98.3, 22.13], [98.47, 22.53], [99.0, 22.75], [99.25, 22.65], [99.5, 22.75], [100.03, 22.53], [100.18, 22.18], [100.25, 22.15], [100.5, 22.25], [101.03, 22.03], [101.25, 21.5], [101.03, 20.97], [100.5, 20.75], [100.25, 20.85], [100.0, 20.75], [99.75, 20.85], [99.68, 20.82], [99.53, 20.47], [99.18, 20.32], [99.03, 19.97], [98.5, 19.75], [98.2, 19.88], [98.03, 19.47], [97.68, 19.32], [97.53, 18.97], [97.18, 18.82], [97.15, 18.75], [97.25, 18.5], [97.03, 17.97], [96.5, 17.75], [95.97, 17.97], [95.82, 18.32], [95.75, 18.35], [95.5, 18.25], [94.97, 18.47], [94.82, 18.82], [94.75, 18.85], [94.5, 18.75], [93.97, 18.97], [93.75, 19.5], [93.85, 19.75], [93.75, 20.0], [93.85, 20.25]]]]}, "2024-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[93.75, 20.5], [93.85, 20.75], [93.75, 21.0], [93.97, 21.53], [94.32, 21.68], [94.47, 22.03], [94.82, 22.18], [94.97, 22.53], [95.5, 22.75], [95.75, 22.65], [96.0, 22.75], [96.5, 22.54], [97.0, 22.75], [97.25, 22.65], [97.5, 22.75], [98.03, 22.53], [98.18, 22.18], [98.53, 22.03], [98.75, 21.5], [98.53, 20.97], [98.18, 20.82], [98.15, 20.75], [98.25, 20.5], [98.15, 20.25], [98.25, 20.0], [98.03, 19.47], [97.68, 19.32], [97.53, 18.97], [97.18, 18.82], [97.15, 18.75], [97.25, 18.5], [97.03, 17.97], [96.5, 17.75], [95.97, 17.97], [95.82, 18.32], [95.75, 18.35], [95.5, 18.25], [94.97, 18.47], [94.82, 18.82], [94.75, 18.85], [94.5, 18.75], [94.25, 18.85], [94.0, 18.75], [93.47, 18.97], [93.25, 19.5], [93.47, 20.03], [93.82, 20.18], [93.85, 20.25], [93.75, 20.5]]]]}, "2024-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[93.75, 20.5], [93.85, 20.75], [93.75, 21.0], [93.97, 21.53], [94.32, 21.68], [94.47, 22.03], [94.82, 22.18], [94.97, 22.53], [95.5, 22.75], [95.75, 22.65], [96.0, 22.75], [96.5, 22.54], [97.0, 22.75], [97.25, 22.65], [97.5, 22.75], [98.03, 22.53], [98.18, 22.18], [98.53, 22.03], [98.75, 21.5], [98.53, 20.97], [98.18, 20.82], [98.15, 20.75], [98.25, 20.5], [98.03, 19.97], [97.68, 19.82], [97.65, 19.75], [97.75, 19.5], [97.53, 18.97], [97.0, 18.75], [96.75, 18.85], [96.5, 18.75], [96.25, 18.85], [96.0, 18.75], [95.75, 18.85], [95.5, 18.75], [95.25, 18.85], [95.0, 18.75], [94.75, 18.85], [94.5, 18.75], [94.25, 18.85], [94.0, 18.75], [93.47, 18.97], [93.25, 19.5], [93.47, 20.03], [93.82, 20.18], [93.85, 20.25], [93.75, 20.5]]]]}, "2024-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[93.47, 18.97], [93.25, 19.5], [93.47, 20.03], [94.0, 20.25], [94.53, 20.03], [94.75, 19.5], [94.53, 18.97], [94.0, 18.75], [93.47, 18.97]]], [[[93.97, 20.47], [93.75, 21.0], [93.97, 21.53], [94.5, 21.75], [95.03, 21.53], [95.25, 21.0], [95.03, 20.47], [94.5, 20.25], [93.97, 20.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.4157962421606385}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.870728777355428}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.40570475260415, 23.383515528628777, 23.589200795491536, 23.798628122492346, 24.04546020782749, 25.61821009318038]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.135756429036462, 20.55738220214846, 20.36016108194991, 20.72978235880538, 20.771633402506552, 25.31132532755538]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4462349497960219, -1.6159193187465513, -1.953300594559978, -2.091177058499354, -1.8723284904635444, -1.5765556339534044]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5686654112491851, -2.409550663375171, -3.0176532148668116, -3.4157962421606385, -2.84301951454097, -1.7584253081991505]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5276148932920373, -1.74580451065276, -2.0089759358873702, -2.0845034182885582, -1.8612427640364795, -1.4541726153721168]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6797156727233198, -2.2757737743795983, -2.6071487253448784, -3.1153897463524243, -2.324545277144668, -1.5560254605013302]}}