{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:14:02.068802", "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-Jun-21_to_2020-Jun-23_96.5_45.0"}, "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": 2020060000705}, "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 21 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 23 2020"}, "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": 62084.856671234884}, "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", "Mongolia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 45.0}, "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": 96.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "96.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 94.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 98.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[93.25, 44.5], [93.47, 45.03], [94.0, 45.25], [94.427, 45.073], [94.25, 45.5], [94.47, 46.03], [95.0, 46.25], [95.25, 46.146], [95.5, 46.25], [96.03, 46.03], [96.177, 45.677], [96.25, 45.646], [96.5, 45.75], [96.75, 45.646], [97.0, 45.75], [97.25, 45.646], [97.5, 45.75], [98.03, 45.53], [98.25, 45.0], [98.043, 44.5], [98.177, 44.177], [98.53, 44.03], [98.75, 43.5], [98.646, 43.25], [98.75, 43.0], [98.53, 42.47], [98.0, 42.25], [97.75, 42.354], [97.5, 42.25], [97.0, 42.457], [96.5, 42.25], [96.25, 42.354], [96.0, 42.25], [95.47, 42.47], [95.323, 42.823], [95.25, 42.854], [95.0, 42.75], [94.47, 42.97], [94.323, 43.323], [93.97, 43.47], [93.823, 43.823], [93.47, 43.97], [93.25, 44.5]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia", "E.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-21T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[93.82322330470336, 43.82322330470336], [93.46966991411009, 43.96966991411009], [93.25, 44.5], 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"Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.15079331572406, 15.867063544075506, 18.1852340772827]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.61650199269036, 6.511998002697567, 9.632063498846378]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.265781014514498, -7.62033866010339, -5.216405477441877]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.653290182222406, -8.931189351304397, -6.4957926499575365]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5449456278901397, -2.2826992628121276, -1.6487935175492408]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.851706619594236, -2.7179402328272455, -2.001991497787362]}}