{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:46.168654", "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": "2012-Mar-02_to_2012-Mar-05_75.5_11.5"}, "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": 2012030000285}, "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 02 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 05 2012"}, "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": 51556.687916043564}, "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": ["Arabian-Sea", "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": ["Laccadive 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": 11.5}, "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": 75.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "75.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 72.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 75.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.47, 14.03], [75.0, 14.25], [75.53, 14.03], [75.75, 13.5], [75.65, 13.25], [75.75, 13.0], [75.53, 12.47], [75.0, 12.25], [74.47, 12.47], [74.25, 13.0], [74.35, 13.25], [74.25, 13.5], [74.47, 14.03]]]]}, "2012-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.32, 10.68], [73.47, 11.03], [73.82, 11.18], [73.97, 11.53], [74.32, 11.68], [74.35, 11.75], [74.25, 12.0], [74.35, 12.25], [74.25, 12.5], [74.35, 12.75], [74.25, 13.0], [74.35, 13.25], [74.25, 13.5], [74.47, 14.03], [75.0, 14.25], [75.53, 14.03], [75.75, 13.5], [75.65, 13.25], [75.75, 13.0], [75.65, 12.75], [75.68, 12.68], [76.03, 12.53], [76.25, 12.0], [76.15, 11.75], [76.25, 11.5], [76.03, 10.97], [75.68, 10.82], [75.65, 10.75], [75.75, 10.5], [75.53, 9.97], [75.18, 9.82], [75.03, 9.47], [74.68, 9.32], [74.53, 8.97], [74.0, 8.75], [73.5, 8.96], [73.0, 8.75], [72.47, 8.97], [72.25, 9.5], [72.47, 10.03], [72.82, 10.18], [72.97, 10.53], [73.32, 10.68]]]]}, "2012-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.32, 10.68], [73.47, 11.03], [73.82, 11.18], [73.97, 11.53], [74.32, 11.68], [74.35, 11.75], [74.25, 12.0], [74.35, 12.25], [74.25, 12.5], [74.35, 12.75], [74.25, 13.0], [74.35, 13.25], [74.25, 13.5], [74.47, 14.03], [75.0, 14.25], [75.53, 14.03], [75.75, 13.5], [75.65, 13.25], [75.75, 13.0], [75.65, 12.75], [75.68, 12.68], [76.03, 12.53], [76.25, 12.0], [76.15, 11.75], [76.25, 11.5], [76.03, 10.97], [75.68, 10.82], [75.65, 10.75], [75.75, 10.5], [75.53, 9.97], [75.18, 9.82], [75.03, 9.47], [74.68, 9.32], [74.53, 8.97], [74.0, 8.75], [73.5, 8.96], [73.0, 8.75], [72.47, 8.97], [72.25, 9.5], [72.47, 10.03], [72.82, 10.18], [72.97, 10.53], [73.32, 10.68]]]]}, "2012-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.32, 10.68], [73.47, 11.03], [73.82, 11.18], [73.97, 11.53], [74.32, 11.68], [74.35, 11.75], [74.25, 12.0], [74.35, 12.25], [74.25, 12.5], [74.47, 13.03], [75.0, 13.25], [75.53, 13.03], [75.68, 12.68], [76.03, 12.53], [76.25, 12.0], [76.15, 11.75], [76.25, 11.5], [76.03, 10.97], [75.68, 10.82], [75.65, 10.75], [75.75, 10.5], [75.53, 9.97], [75.18, 9.82], [75.03, 9.47], [74.68, 9.32], [74.53, 8.97], [74.0, 8.75], [73.5, 8.96], [73.0, 8.75], [72.47, 8.97], [72.25, 9.5], [72.47, 10.03], [72.82, 10.18], [72.97, 10.53], [73.32, 10.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.730894706915194}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.118122651709716}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.722323584622472, 26.427864844495502, 26.044437974910522, 26.81794086072682]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.3437086973409, 23.154090692495913, 24.03777980516014, 26.250616782563668]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1861729772057004, -1.061352053641268, -1.4670021361185444, -0.7779925371244871]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5066583682793748, -2.730894706915194, -1.9534488885707333, -0.9646021868120442]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5350358206114545, -2.0183934462765087, -2.9131093784552613, -1.6073351498664914]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7439513622177285, -3.2099763664361114, -3.4170270356477976, -2.0752842088940624]}}