{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:32.317429", "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-Oct-11_to_2022-Oct-14_73.0_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": 2022100000531}, "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": "October 11 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 14 2022"}, "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": 50411.853782815364}, "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": ["Arabian Sea"]}, "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": 73.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "73.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 71.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 73.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[70.82, 17.18], [70.97, 17.53], [71.5, 17.75], [71.8, 17.63], [71.97, 18.03], [72.5, 18.25], [72.75, 18.15], [73.0, 18.25], [73.53, 18.03], [73.75, 17.5], [73.65, 17.25], [73.75, 17.0], [73.65, 16.75], [73.68, 16.68], [74.03, 16.53], [74.25, 16.0], [74.03, 15.47], [73.5, 15.25], [73.25, 15.35], [73.18, 15.32], [73.03, 14.97], [72.5, 14.75], [72.25, 14.85], [72.0, 14.75], [71.75, 14.85], [71.5, 14.75], [70.97, 14.97], [70.75, 15.5], [70.85, 15.75], [70.82, 15.82], [70.47, 15.97], [70.25, 16.5], [70.47, 17.03], [70.82, 17.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia", "Arabian-Sea"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.75, 16.0], [70.97, 16.53], [71.32, 16.68], [71.47, 17.03], [71.82, 17.18], [71.85, 17.25], [71.75, 17.5], [71.97, 18.03], [72.5, 18.25], [72.75, 18.15], [73.0, 18.25], [73.53, 18.03], [73.75, 17.5], [73.65, 17.25], [73.75, 17.0], [73.65, 16.75], [73.68, 16.68], [74.03, 16.53], [74.25, 16.0], [74.03, 15.47], [73.5, 15.25], [73.25, 15.35], [73.18, 15.32], [73.03, 14.97], [72.5, 14.75], [72.25, 14.85], [72.0, 14.75], [71.75, 14.85], [71.5, 14.75], [70.97, 14.97], [70.75, 15.5], [70.85, 15.75], [70.75, 16.0]]]]}, "2022-10-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.47, 15.97], [70.25, 16.5], [70.47, 17.03], [70.82, 17.18], [70.97, 17.53], [71.5, 17.75], [71.8, 17.63], [71.97, 18.03], [72.5, 18.25], [72.75, 18.15], [73.0, 18.25], [73.53, 18.03], [73.75, 17.5], [73.65, 17.25], [73.75, 17.0], [73.65, 16.75], [73.68, 16.68], [74.03, 16.53], [74.25, 16.0], [74.03, 15.47], [73.5, 15.25], [73.25, 15.35], [73.18, 15.32], [73.03, 14.97], [72.5, 14.75], [72.25, 14.85], [72.0, 14.75], [71.75, 14.85], [71.5, 14.75], [70.97, 14.97], [70.75, 15.5], [70.85, 15.75], [70.82, 15.82], [70.47, 15.97]]]]}, "2022-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.47, 15.97], [70.25, 16.5], [70.47, 17.03], [70.82, 17.18], [70.97, 17.53], [71.5, 17.75], [71.8, 17.63], [71.97, 18.03], [72.5, 18.25], [72.75, 18.15], [73.0, 18.25], [73.53, 18.03], [73.75, 17.5], [73.65, 17.25], [73.75, 17.0], [73.65, 16.75], [73.68, 16.68], [74.03, 16.53], [74.25, 16.0], [74.03, 15.47], [73.5, 15.25], [73.25, 15.35], [73.18, 15.32], [73.03, 14.97], [72.5, 14.75], [72.25, 14.85], [72.0, 14.75], [71.75, 14.85], [71.5, 14.75], [70.97, 14.97], [70.75, 15.5], [70.85, 15.75], [70.82, 15.82], [70.47, 15.97]]]]}, "2022-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.97, 17.53], [71.5, 17.75], [72.03, 17.53], [72.25, 17.0], [72.03, 16.47], [71.68, 16.32], [71.53, 15.97], [71.0, 15.75], [70.47, 15.97], [70.25, 16.5], [70.47, 17.03], [70.82, 17.18], [70.97, 17.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.9053783448278523}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3671483923824839}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.34148991037273, 26.15129758798662, 26.536767886709924, 26.988842804775004]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.07795591374304, 25.49236136566816, 26.23595179790533, 26.92487762822202]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3009636322580491, -1.5718133615805059, -1.251954396758372, -1.1030308179375083]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5658880052406516, -1.9053783448278523, -1.5541862601419325, -1.1040078714682977]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8027507043128281, -2.1055851117434425, -1.6154347368291575, -1.4233095584176705]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3055151173372423, -2.4501946690659637, -2.02957337323077, -1.4702464770576695]}}