{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:06.657358", "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-Mar-04_to_2020-Mar-07_74.5_17.5"}, "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": 2020030000154}, "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": "March 04 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 07 2020"}, "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": 50408.24299635998}, "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": 17.5}, "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": 74.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "74.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 73.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 76.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.5, 18.25], [75.03, 18.03], [75.25, 17.5], [75.03, 16.97], [74.5, 16.75], [73.97, 16.97], [73.75, 17.5], [73.97, 18.03], [74.5, 18.25]]]]}, "2020-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.25, 16.5], [73.47, 17.03], [73.88, 17.2], [73.75, 17.5], [73.85, 17.75], [73.75, 18.0], [73.97, 18.53], [74.5, 18.75], [74.75, 18.65], [75.0, 18.75], [75.53, 18.53], [75.75, 18.0], [75.65, 17.75], [75.75, 17.5], [75.65, 17.25], [75.68, 17.18], [76.03, 17.03], [76.25, 16.5], [76.15, 16.25], [76.18, 16.18], [76.53, 16.03], [76.75, 15.5], [76.53, 14.97], [76.18, 14.82], [76.03, 14.47], [75.5, 14.25], [75.25, 14.35], [75.0, 14.25], [74.47, 14.47], [74.25, 15.0], [74.35, 15.25], [74.32, 15.32], [73.97, 15.47], [73.82, 15.82], [73.47, 15.97], [73.25, 16.5]]]]}, "2020-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.25, 16.5], [73.47, 17.03], [73.88, 17.2], [73.75, 17.5], [73.85, 17.75], [73.75, 18.0], [73.97, 18.53], [74.5, 18.75], [74.75, 18.65], [75.0, 18.75], [75.53, 18.53], [75.75, 18.0], [75.65, 17.75], [75.75, 17.5], [75.65, 17.25], [75.68, 17.18], [76.03, 17.03], [76.25, 16.5], [76.15, 16.25], [76.18, 16.18], [76.53, 16.03], [76.75, 15.5], [76.53, 14.97], [76.18, 14.82], [76.03, 14.47], [75.5, 14.25], [75.25, 14.35], [75.0, 14.25], [74.47, 14.47], [74.25, 15.0], [74.35, 15.25], [74.32, 15.32], [73.97, 15.47], [73.82, 15.82], [73.47, 15.97], [73.25, 16.5]]]]}, "2020-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.25, 16.5], [73.47, 17.03], [73.88, 17.2], [73.75, 17.5], [73.85, 17.75], [73.75, 18.0], [73.97, 18.53], [74.5, 18.75], [74.75, 18.65], [75.0, 18.75], [75.53, 18.53], [75.75, 18.0], [75.65, 17.75], [75.75, 17.5], [75.65, 17.25], [75.68, 17.18], [76.03, 17.03], [76.25, 16.5], [76.15, 16.25], [76.18, 16.18], [76.53, 16.03], [76.75, 15.5], [76.53, 14.97], [76.18, 14.82], [76.03, 14.47], [75.5, 14.25], [75.25, 14.35], [75.0, 14.25], [74.47, 14.47], [74.25, 15.0], [74.35, 15.25], [74.32, 15.32], [73.97, 15.47], [73.82, 15.82], [73.47, 15.97], [73.25, 16.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.619675987756011}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4874047765983054}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.991066381908638, 24.807339579160157, 24.470089691317412, 25.22836883322134]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.991066381908638, 22.801523227848918, 22.60707154561669, 23.362638280390343]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.5432274679457123, -2.4307607008391634, -2.851326424539483, -2.1768435166899516]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5432274679457123, -3.219308420856237, -3.619675987756011, -2.7455630350549995]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.404302550259558, -1.664728304801105, -1.959754708213769, -1.4980757603181079]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.404302550259558, -1.9609940203312664, -2.2837672199246137, -1.698216931758434]}}