{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:21.207503", "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": "2022-Feb-04_to_2022-Feb-06_78.5_17.0"}, "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": 2022020000274}, "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": "February 04 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 06 2022"}, "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": 102104.30380582061}, "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"]}, "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": 17.0}, "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": 78.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "78.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 77.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 80.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[76.47, 21.53], [77.0, 21.75], [77.25, 21.65], [77.5, 21.75], [77.75, 21.65], [78.0, 21.75], [78.25, 21.65], [78.32, 21.68], [78.47, 22.03], [79.0, 22.25], [79.53, 22.03], [79.7, 21.63], [80.0, 21.75], [80.25, 21.65], [80.5, 21.75], [81.03, 21.53], [81.25, 21.0], [81.03, 20.47], [80.5, 20.25], [80.25, 20.35], [80.18, 20.32], [80.03, 19.97], [79.63, 19.8], [79.75, 19.5], [79.65, 19.25], [79.68, 19.18], [80.03, 19.03], [80.25, 18.5], [80.03, 17.97], [79.68, 17.82], [79.65, 17.75], [79.75, 17.5], [79.65, 17.25], [79.75, 17.0], [79.53, 16.47], [79.0, 16.25], [78.75, 16.35], [78.5, 16.25], [78.25, 16.35], [78.0, 16.25], [77.75, 16.35], [77.5, 16.25], [76.97, 16.47], [76.75, 17.0], [76.96, 17.5], [76.75, 18.0], [76.85, 18.25], [76.75, 18.5], [76.96, 19.0], [76.75, 19.5], [76.96, 20.0], [76.82, 20.32], [76.47, 20.47], [76.25, 21.0], [76.47, 21.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.47, 20.47], [76.25, 21.0], [76.47, 21.53], [77.0, 21.75], [77.25, 21.65], [77.5, 21.75], [77.75, 21.65], [78.0, 21.75], [78.25, 21.65], [78.32, 21.68], [78.47, 22.03], [79.0, 22.25], [79.53, 22.03], [79.7, 21.63], [80.0, 21.75], [80.25, 21.65], [80.5, 21.75], [81.03, 21.53], [81.25, 21.0], [81.03, 20.47], [80.5, 20.25], [80.25, 20.35], [80.18, 20.32], [80.03, 19.97], [79.63, 19.8], [79.75, 19.5], [79.65, 19.25], [79.68, 19.18], [80.03, 19.03], [80.25, 18.5], [80.03, 17.97], [79.68, 17.82], [79.65, 17.75], [79.75, 17.5], [79.65, 17.25], [79.75, 17.0], [79.53, 16.47], [79.0, 16.25], [78.75, 16.35], [78.5, 16.25], [78.25, 16.35], [78.0, 16.25], [77.75, 16.35], [77.5, 16.25], [76.97, 16.47], [76.75, 17.0], [76.96, 17.5], [76.75, 18.0], [76.85, 18.25], [76.75, 18.5], [76.96, 19.0], [76.75, 19.5], [76.96, 20.0], [76.82, 20.32], [76.47, 20.47]]]]}, "2022-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.47, 20.47], [76.25, 21.0], [76.47, 21.53], [77.0, 21.75], [77.25, 21.65], [77.5, 21.75], [77.75, 21.65], [78.0, 21.75], [78.25, 21.65], [78.32, 21.68], [78.47, 22.03], [79.0, 22.25], [79.53, 22.03], [79.7, 21.63], [80.0, 21.75], [80.25, 21.65], [80.5, 21.75], [81.03, 21.53], [81.25, 21.0], [81.03, 20.47], [80.5, 20.25], [80.25, 20.35], [80.18, 20.32], [80.03, 19.97], [79.63, 19.8], [79.75, 19.5], [79.65, 19.25], [79.68, 19.18], [80.03, 19.03], [80.25, 18.5], [80.03, 17.97], [79.68, 17.82], [79.65, 17.75], [79.75, 17.5], [79.65, 17.25], [79.75, 17.0], [79.53, 16.47], [79.0, 16.25], [78.75, 16.35], [78.5, 16.25], [78.25, 16.35], [78.0, 16.25], [77.75, 16.35], [77.5, 16.25], [76.97, 16.47], [76.75, 17.0], [76.96, 17.5], [76.75, 18.0], [76.85, 18.25], [76.75, 18.5], [76.96, 19.0], [76.75, 19.5], [76.96, 20.0], [76.82, 20.32], [76.47, 20.47]]]]}, "2022-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[76.47, 20.47], [76.25, 21.0], [76.47, 21.53], [77.0, 21.75], [77.25, 21.65], [77.5, 21.75], [77.75, 21.65], [78.0, 21.75], [78.25, 21.65], [78.32, 21.68], [78.47, 22.03], [79.0, 22.25], [79.53, 22.03], [79.7, 21.63], [80.0, 21.75], [80.25, 21.65], [80.5, 21.75], [81.03, 21.53], [81.25, 21.0], [81.03, 20.47], [80.5, 20.25], [80.25, 20.35], [80.18, 20.32], [80.03, 19.97], [79.63, 19.8], [79.75, 19.5], [79.65, 19.25], [79.68, 19.18], [80.03, 19.03], [80.25, 18.5], [80.03, 17.97], [79.68, 17.82], [79.65, 17.75], [79.75, 17.5], [79.65, 17.25], [79.75, 17.0], [79.53, 16.47], [79.0, 16.25], [78.75, 16.35], [78.5, 16.25], [78.25, 16.35], [78.0, 16.25], [77.75, 16.35], [77.5, 16.25], [76.97, 16.47], [76.75, 17.0], [76.96, 17.5], [76.75, 18.0], [76.85, 18.25], [76.75, 18.5], [76.96, 19.0], [76.75, 19.5], [76.96, 20.0], [76.82, 20.32], [76.47, 20.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.130495930415691}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.8637921835660314}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.815435053035117, 20.580873537286152, 21.180006515727428]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.181627311145974, 18.169703056091805, 19.1290159269966]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.828402865711741, -3.156370904328258, -2.6066027806580956]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.095270674586288, -4.130495930415691, -3.4525739419827346]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8073074256853594, -2.0839976453110944, -1.7011916437100076]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.494942050729245, -2.5784054087811636, -2.070652761103568]}}