{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:28.962653", "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": "2015-Mar-09_to_2015-Mar-11_59.0_19.5"}, "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": 2015030000458}, "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 09 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 11 2015"}, "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": 84390.66337167515}, "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": ["Oman"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "Arabian-Sea"]}, "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": 19.5}, "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": 59.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "59.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 57.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 60.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.25, 19.5], [57.35, 19.75], [57.25, 20.0], [57.47, 20.53], [57.82, 20.68], [57.97, 21.03], [58.32, 21.18], [58.47, 21.53], [58.82, 21.68], [58.97, 22.03], [59.5, 22.25], [60.03, 22.03], [60.18, 21.68], [60.53, 21.53], [60.75, 21.0], [60.65, 20.75], [60.75, 20.5], [60.65, 20.25], [60.68, 20.18], [61.03, 20.03], [61.25, 19.5], [61.03, 18.97], [60.68, 18.82], [60.53, 18.47], [60.18, 18.32], [60.03, 17.97], [59.5, 17.75], [59.25, 17.85], [59.0, 17.75], [58.75, 17.85], [58.5, 17.75], [58.25, 17.85], [58.0, 17.75], [57.75, 17.85], [57.5, 17.75], [56.97, 17.97], [56.75, 18.5], [56.97, 19.03], [57.32, 19.18], [57.35, 19.25], [57.25, 19.5]]]]}, "2015-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.25, 19.5], [57.35, 19.75], [57.25, 20.0], [57.47, 20.53], [57.82, 20.68], [57.97, 21.03], [58.32, 21.18], [58.47, 21.53], [58.82, 21.68], [58.97, 22.03], [59.5, 22.25], [60.03, 22.03], [60.18, 21.68], [60.53, 21.53], [60.75, 21.0], [60.65, 20.75], [60.75, 20.5], [60.65, 20.25], [60.68, 20.18], [61.03, 20.03], [61.25, 19.5], [61.03, 18.97], [60.68, 18.82], [60.53, 18.47], [60.18, 18.32], [60.03, 17.97], [59.5, 17.75], [59.25, 17.85], [59.0, 17.75], [58.75, 17.85], [58.5, 17.75], [58.25, 17.85], [58.0, 17.75], [57.75, 17.85], [57.5, 17.75], [56.97, 17.97], [56.75, 18.5], [56.97, 19.03], [57.32, 19.18], [57.35, 19.25], [57.25, 19.5]]]]}, "2015-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.25, 19.5], [57.35, 19.75], [57.25, 20.0], [57.47, 20.53], [57.82, 20.68], [57.97, 21.03], [58.32, 21.18], [58.47, 21.53], [58.82, 21.68], [58.97, 22.03], [59.5, 22.25], [60.03, 22.03], [60.18, 21.68], [60.53, 21.53], [60.75, 21.0], [60.65, 20.75], [60.75, 20.5], [60.65, 20.25], [60.68, 20.18], [61.03, 20.03], [61.25, 19.5], [61.03, 18.97], [60.68, 18.82], [60.53, 18.47], [60.18, 18.32], [60.03, 17.97], [59.5, 17.75], [59.25, 17.85], [59.0, 17.75], [58.75, 17.85], [58.5, 17.75], [58.25, 17.85], [58.0, 17.75], [57.75, 17.85], [57.5, 17.75], [56.97, 17.97], [56.75, 18.5], [56.97, 19.03], [57.32, 19.18], [57.35, 19.25], [57.25, 19.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.009229065032457}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.394252460379957}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.923369159030585, 22.5004630393787, 22.8066053642425]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.205516150609924, 22.09035721502761, 22.29979134139745]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.153914262143454, -1.6489231442017447, -1.3799199747946729]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5796349903647524, -2.009229065032457, -1.8775795133869337]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5767125760425105, -2.259701455734971, -1.8614852822623404]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9512700215641599, -2.4683450828427835, -2.1438043162401748]}}