{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:48.064262", "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": "2018-Aug-26_to_2018-Aug-29_80.5_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": 2018080001014}, "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": "August 26 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 29 2018"}, "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": 63503.191572988646}, "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": ["India"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": 21.5}, "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": 80.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "80.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 79.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 83.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.75}, "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": {"2018-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.85, 21.25], [79.75, 21.5], [79.97, 22.03], [80.5, 22.25], [80.75, 22.15], [81.0, 22.25], [81.25, 22.15], [81.32, 22.18], [81.47, 22.53], [82.0, 22.75], [82.53, 22.53], [82.68, 22.18], [82.75, 22.15], [83.0, 22.25], [83.53, 22.03], [83.75, 21.5], [83.65, 21.25], [83.75, 21.0], [83.53, 20.47], [83.18, 20.32], [83.03, 19.97], [82.68, 19.82], [82.53, 19.47], [82.0, 19.25], [81.75, 19.35], [81.5, 19.25], [81.25, 19.35], [81.0, 19.25], [80.47, 19.47], [80.32, 19.82], [79.97, 19.97], [79.75, 20.5], [79.85, 20.75], [79.75, 21.0], [79.85, 21.25]]]]}, "2018-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 21.5], [79.47, 22.03], [80.0, 22.25], [80.25, 22.15], [80.5, 22.25], [80.75, 22.15], [81.0, 22.25], [81.25, 22.15], [81.32, 22.18], [81.47, 22.53], [82.0, 22.75], [82.53, 22.53], [82.68, 22.18], [82.75, 22.15], [83.0, 22.25], [83.53, 22.03], [83.75, 21.5], [83.65, 21.25], [83.75, 21.0], [83.53, 20.47], [83.18, 20.32], [83.03, 19.97], [82.68, 19.82], [82.53, 19.47], [82.0, 19.25], [81.75, 19.35], [81.5, 19.25], [81.25, 19.35], [81.0, 19.25], [80.47, 19.47], [80.32, 19.82], [79.97, 19.97], [79.75, 20.5], [79.85, 20.75], [79.82, 20.82], [79.47, 20.97], [79.25, 21.5]]]]}, "2018-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 21.5], [79.47, 22.03], [80.0, 22.25], [80.25, 22.15], [80.5, 22.25], [80.75, 22.15], [81.0, 22.25], [81.25, 22.15], [81.32, 22.18], [81.47, 22.53], [82.0, 22.75], [82.53, 22.53], [82.68, 22.18], [82.75, 22.15], [83.0, 22.25], [83.53, 22.03], [83.75, 21.5], [83.65, 21.25], [83.75, 21.0], [83.53, 20.47], [83.18, 20.32], [83.03, 19.97], [82.68, 19.82], [82.53, 19.47], [82.0, 19.25], [81.75, 19.35], [81.5, 19.25], [81.25, 19.35], [81.0, 19.25], [80.47, 19.47], [80.32, 19.82], [79.97, 19.97], [79.75, 20.5], [79.85, 20.75], [79.82, 20.82], [79.47, 20.97], [79.25, 21.5]]]]}, "2018-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.47, 20.97], [79.25, 21.5], [79.47, 22.03], [80.0, 22.25], [80.25, 22.15], [80.5, 22.25], [81.03, 22.03], [81.25, 21.5], [81.03, 20.97], [80.5, 20.75], [80.25, 20.85], [80.0, 20.75], [79.47, 20.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.702275428316966}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1315564046514557}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.332033817150773, 24.193589019168257, 24.562075806022847, 25.032865026964373]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.758358226800624, 22.339021400304716, 22.992335421122277, 24.6038378175532]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1543780595586965, -2.344076172188814, -1.9511569964768734, -1.5386050751348819]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4539074237762293, -2.702275428316966, -2.221769235875854, -1.6281429463458608]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9094252720517941, -2.0516819536081825, -1.6799687712253144, -1.3449401230800642]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.321608802579602, -2.366994616484032, -1.8647160354295984, -1.4062977728156836]}}