{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:20.366677", "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-Jun-28_to_2024-Jun-30_98.5_30.0"}, "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": 2024060000817}, "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 28 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 30 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 58466.61281241015}, "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"]}, "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": 30.0}, "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": 98.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "98.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 96.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 99.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[96.5, 32.25], [96.75, 32.15], [97.0, 32.25], [97.25, 32.15], [97.5, 32.25], [97.75, 32.15], [98.0, 32.25], [98.25, 32.15], [98.5, 32.25], [98.75, 32.15], [99.0, 32.25], [99.53, 32.03], [99.75, 31.5], [99.63, 31.2], [100.03, 31.03], [100.25, 30.5], [100.15, 30.25], [100.25, 30.0], [100.03, 29.47], [99.68, 29.32], [99.53, 28.97], [99.0, 28.75], [98.75, 28.85], [98.5, 28.75], [97.97, 28.97], [97.82, 29.32], [97.47, 29.47], [97.32, 29.82], [96.97, 29.97], [96.82, 30.32], [96.75, 30.35], [96.5, 30.25], [95.97, 30.47], [95.75, 31.0], [95.85, 31.25], [95.75, 31.5], [95.97, 32.03], [96.5, 32.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau", "E.Asia", "S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.75, 31.5], [95.97, 32.03], [96.5, 32.25], [96.75, 32.15], [97.0, 32.25], [97.25, 32.15], [97.5, 32.25], [97.75, 32.15], [98.0, 32.25], [98.25, 32.15], [98.5, 32.25], [98.75, 32.15], [99.0, 32.25], [99.53, 32.03], [99.75, 31.5], [99.63, 31.2], [100.03, 31.03], [100.25, 30.5], [100.15, 30.25], [100.25, 30.0], [100.03, 29.47], [99.68, 29.32], [99.53, 28.97], [99.0, 28.75], [98.75, 28.85], [98.5, 28.75], [97.97, 28.97], [97.82, 29.32], [97.47, 29.47], [97.32, 29.82], [96.97, 29.97], [96.82, 30.32], [96.75, 30.35], [96.5, 30.25], [95.97, 30.47], [95.75, 31.0], [95.85, 31.25], [95.75, 31.5]]]]}, "2024-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.75, 31.5], [95.97, 32.03], [96.5, 32.25], [96.75, 32.15], [97.0, 32.25], [97.25, 32.15], [97.5, 32.25], [97.75, 32.15], [98.0, 32.25], [98.25, 32.15], [98.5, 32.25], [98.75, 32.15], [99.0, 32.25], [99.53, 32.03], [99.75, 31.5], [99.63, 31.2], [100.03, 31.03], [100.25, 30.5], [100.15, 30.25], [100.25, 30.0], [100.03, 29.47], [99.68, 29.32], [99.53, 28.97], [99.0, 28.75], [98.75, 28.85], [98.5, 28.75], [97.97, 28.97], [97.82, 29.32], [97.47, 29.47], [97.32, 29.82], [96.97, 29.97], [96.82, 30.32], [96.75, 30.35], [96.5, 30.25], [95.97, 30.47], [95.75, 31.0], [95.85, 31.25], [95.75, 31.5]]]]}, "2024-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.75, 31.5], [95.97, 32.03], [96.5, 32.25], [96.75, 32.15], [97.0, 32.25], [97.25, 32.15], [97.5, 32.25], [97.75, 32.15], [98.0, 32.25], [98.25, 32.15], [98.5, 32.25], [98.75, 32.15], [99.0, 32.25], [99.53, 32.03], [99.75, 31.5], [99.63, 31.2], [100.03, 31.03], [100.25, 30.5], [100.15, 30.25], [100.25, 30.0], [100.03, 29.47], [99.68, 29.32], [99.53, 28.97], [99.0, 28.75], [98.75, 28.85], [98.5, 28.75], [97.97, 28.97], [97.82, 29.32], [97.47, 29.47], [97.32, 29.82], [96.97, 29.97], [96.82, 30.32], [96.75, 30.35], [96.5, 30.25], [95.97, 30.47], [95.75, 31.0], [95.85, 31.25], [95.75, 31.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.42719334705464}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.093448017518422}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.169085448906685, 7.0462242279875795, 8.056619522564745]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.1136684477506265, 4.348519328396776, 5.539596146256429]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.2786234267978114, -3.499704561701151, -2.5020160640563036]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.181881948701289, -6.42719334705464, -2.9504530003090395]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0537621121710923, -2.342051584730059, -1.6110814424483957]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.1698827476263607, -4.68452971781665, -1.9170687573467173]}}