{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:52.196985", "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": "2016-Mar-03_to_2016-Mar-06_352.5_60.5"}, "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": 2016030000115}, "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 03 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 06 2016"}, "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": 184750.76929997146}, "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": ["Faroe Islands"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Greenland/Iceland", "N.Atlantic-Ocean", "N.Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["North Atlantic Ocean", "Norwegian 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": 60.5}, "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": 352.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "352.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 347.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 356.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 65.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 62.25], [-12.75, 62.5], [-12.65, 62.75], [-12.75, 63.0], [-12.65, 63.25], [-12.75, 63.5], [-12.65, 63.75], [-12.75, 64.0], [-12.53, 64.53], [-12.12, 64.7], [-12.25, 65.0], [-12.03, 65.53], [-11.5, 65.75], [-10.97, 65.53], [-10.82, 65.18], [-10.75, 65.15], [-10.5, 65.25], [-10.25, 65.15], [-10.18, 65.18], [-10.03, 65.53], [-9.5, 65.75], [-8.97, 65.53], [-8.75, 65.0], [-8.85, 64.75], [-8.82, 64.68], [-8.75, 64.65], [-8.5, 64.75], [-7.97, 64.53], [-7.82, 64.18], [-7.75, 64.15], [-7.5, 64.25], [-7.25, 64.15], [-7.0, 64.25], [-6.75, 64.15], [-6.5, 64.25], [-5.97, 64.03], [-5.75, 63.5], [-5.85, 63.25], [-5.75, 63.0], [-5.85, 62.75], [-5.82, 62.68], [-5.47, 62.53], [-5.25, 62.0], [-5.35, 61.75], [-5.25, 61.5], [-5.35, 61.25], [-5.25, 61.0], [-5.47, 60.47], [-6.0, 60.25], [-6.25, 60.35], [-6.32, 60.32], [-6.47, 59.97], [-7.0, 59.75], [-7.25, 59.85], [-7.32, 59.82], [-7.47, 59.47], [-8.0, 59.25], [-8.25, 59.35], [-8.5, 59.25], [-8.75, 59.35], [-8.82, 59.32], [-8.97, 58.97], [-9.5, 58.75], [-9.75, 58.85], [-10.0, 58.75], [-10.53, 58.97], [-10.68, 59.32], [-10.75, 59.35], [-11.0, 59.25], [-11.53, 59.47], [-11.68, 59.82], [-11.75, 59.85], [-12.0, 59.75], [-12.53, 59.97], [-12.75, 60.5], [-12.54, 61.0], [-12.75, 61.5], [-12.65, 61.75], [-12.75, 62.0], [-12.65, 62.25]]]]}, "2016-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 62.25], [-12.75, 62.5], [-12.65, 62.75], [-12.75, 63.0], [-12.65, 63.25], [-12.75, 63.5], [-12.65, 63.75], [-12.75, 64.0], [-12.53, 64.53], [-12.12, 64.7], [-12.25, 65.0], [-12.03, 65.53], [-11.5, 65.75], [-10.97, 65.53], [-10.82, 65.18], [-10.75, 65.15], [-10.5, 65.25], [-10.25, 65.15], [-10.18, 65.18], [-10.03, 65.53], [-9.5, 65.75], [-8.97, 65.53], [-8.75, 65.0], [-8.85, 64.75], [-8.82, 64.68], [-8.75, 64.65], [-8.5, 64.75], [-7.97, 64.53], [-7.82, 64.18], [-7.75, 64.15], [-7.5, 64.25], [-7.25, 64.15], [-7.0, 64.25], [-6.75, 64.15], [-6.5, 64.25], [-6.25, 64.15], [-6.0, 64.25], [-5.75, 64.15], [-5.5, 64.25], [-5.25, 64.15], [-5.0, 64.25], [-4.47, 64.03], [-4.25, 63.5], [-4.35, 63.25], [-4.32, 63.18], [-4.25, 63.15], [-4.0, 63.25], [-3.47, 63.03], [-3.25, 62.5], [-3.35, 62.25], [-3.25, 62.0], [-3.47, 61.47], [-3.82, 61.32], [-3.97, 60.97], [-4.5, 60.75], [-4.75, 60.85], [-4.82, 60.82], [-4.97, 60.47], [-5.5, 60.25], [-5.75, 60.35], [-5.82, 60.32], [-5.97, 59.97], [-6.5, 59.75], [-6.75, 59.85], [-7.0, 59.75], [-7.25, 59.85], [-7.32, 59.82], [-7.47, 59.47], [-8.0, 59.25], [-8.25, 59.35], [-8.5, 59.25], [-8.75, 59.35], [-8.82, 59.32], [-8.97, 58.97], [-9.5, 58.75], [-9.75, 58.85], [-10.0, 58.75], [-10.53, 58.97], [-10.68, 59.32], [-10.75, 59.35], [-11.0, 59.25], [-11.53, 59.47], [-11.68, 59.82], [-11.75, 59.85], [-12.0, 59.75], [-12.53, 59.97], [-12.75, 60.5], [-12.54, 61.0], [-12.75, 61.5], [-12.65, 61.75], [-12.75, 62.0], [-12.65, 62.25]]]]}, "2016-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 62.25], [-12.75, 62.5], [-12.65, 62.75], [-12.75, 63.0], [-12.65, 63.25], [-12.75, 63.5], [-12.65, 63.75], [-12.75, 64.0], [-12.53, 64.53], [-12.12, 64.7], [-12.25, 65.0], [-12.03, 65.53], [-11.5, 65.75], [-10.97, 65.53], [-10.82, 65.18], [-10.75, 65.15], [-10.5, 65.25], [-10.25, 65.15], [-10.18, 65.18], [-10.03, 65.53], [-9.5, 65.75], [-8.97, 65.53], [-8.75, 65.0], [-8.85, 64.75], [-8.82, 64.68], [-8.75, 64.65], [-8.5, 64.75], [-7.97, 64.53], [-7.82, 64.18], [-7.75, 64.15], [-7.5, 64.25], [-7.25, 64.15], [-7.0, 64.25], [-6.75, 64.15], [-6.5, 64.25], [-6.25, 64.15], [-6.0, 64.25], [-5.75, 64.15], [-5.5, 64.25], [-5.25, 64.15], [-5.0, 64.25], [-4.47, 64.03], [-4.25, 63.5], [-4.35, 63.25], [-4.32, 63.18], [-4.25, 63.15], [-4.0, 63.25], [-3.47, 63.03], [-3.25, 62.5], [-3.35, 62.25], [-3.25, 62.0], [-3.47, 61.47], [-3.82, 61.32], [-3.97, 60.97], [-4.5, 60.75], [-4.75, 60.85], [-4.82, 60.82], [-4.97, 60.47], [-5.5, 60.25], [-5.75, 60.35], [-5.82, 60.32], [-5.97, 59.97], [-6.5, 59.75], [-6.75, 59.85], [-7.0, 59.75], [-7.25, 59.85], [-7.32, 59.82], [-7.47, 59.47], [-8.0, 59.25], [-8.25, 59.35], [-8.5, 59.25], [-8.75, 59.35], [-8.82, 59.32], [-8.97, 58.97], [-9.5, 58.75], [-9.75, 58.85], [-10.0, 58.75], [-10.53, 58.97], [-10.68, 59.32], [-10.75, 59.35], [-11.0, 59.25], [-11.53, 59.47], [-11.68, 59.82], [-11.75, 59.85], [-12.0, 59.75], [-12.53, 59.97], [-12.75, 60.5], [-12.54, 61.0], [-12.75, 61.5], [-12.65, 61.75], [-12.75, 62.0], [-12.65, 62.25]]]]}, "2016-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.15, 60.75], [-10.25, 61.0], [-10.03, 61.53], [-9.68, 61.68], [-9.65, 61.75], [-9.75, 62.0], [-9.53, 62.53], [-9.18, 62.68], [-9.03, 63.03], [-8.5, 63.25], [-8.25, 63.15], [-8.0, 63.25], [-7.75, 63.15], [-7.68, 63.18], [-7.53, 63.53], [-7.18, 63.68], [-7.03, 64.03], [-6.5, 64.25], [-6.25, 64.15], [-6.0, 64.25], [-5.75, 64.15], [-5.5, 64.25], [-5.25, 64.15], [-5.0, 64.25], [-4.47, 64.03], [-4.25, 63.5], [-4.35, 63.25], [-4.32, 63.18], [-4.25, 63.15], [-4.0, 63.25], [-3.47, 63.03], [-3.25, 62.5], [-3.35, 62.25], [-3.25, 62.0], [-3.47, 61.47], [-3.82, 61.32], [-3.97, 60.97], [-4.5, 60.75], [-4.75, 60.85], [-4.82, 60.82], [-4.97, 60.47], [-5.5, 60.25], [-5.75, 60.35], [-5.82, 60.32], [-5.97, 59.97], [-6.5, 59.75], [-6.75, 59.85], [-7.0, 59.75], [-7.25, 59.85], [-7.32, 59.82], [-7.47, 59.47], [-8.0, 59.25], [-8.25, 59.35], [-8.5, 59.25], [-8.75, 59.35], [-9.0, 59.25], [-9.25, 59.35], [-9.5, 59.25], [-10.03, 59.47], [-10.25, 60.0], [-10.15, 60.25], [-10.25, 60.5], [-10.15, 60.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.356033821209337}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.5743711746847473}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.2481939805745128, 1.3786558001068556, 1.1753054002790009, 1.9116729156638712]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.021160246604211, -2.345644232010841, -1.6796494778671445, 0.2787306365533482]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.5337774886161974, -3.462032164833584, -3.7922726864185456, -3.4222398055918526]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.045977603019594, -4.356033821209337, -4.239980366517273, -3.795470769857218]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5847352215139638, -1.6354633015880118, -1.8449751626689805, -1.8037920750108896]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7873594723165314, -1.8181058034455098, -2.3920765483191873, -2.1963546143203847]}}