{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:57.806369", "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": "2026-Mar-15_to_2026-Mar-24_114.5_5.5"}, "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": 2026030000415}, "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 15 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 24 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 52334.15741474003}, "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": ["Malaysia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.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": ["South China 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": 5.5}, "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": 114.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "114.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 112.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 115.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.0, 6.75], [115.53, 6.53], [115.75, 6.0], [115.53, 5.47], [115.18, 5.32], [115.03, 4.97], [114.5, 4.75], [113.97, 4.97], [113.75, 5.5], [113.97, 6.03], [114.32, 6.18], [114.47, 6.53], [115.0, 6.75]]]]}, "2026-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.47, 6.03], [113.82, 6.18], [113.97, 6.53], [114.32, 6.68], [114.47, 7.03], [115.0, 7.25], [115.25, 7.15], [115.5, 7.25], [116.03, 7.03], [116.25, 6.5], [116.03, 5.97], [115.68, 5.82], [115.53, 5.47], [115.18, 5.32], [115.03, 4.97], [114.68, 4.82], [114.53, 4.47], [114.0, 4.25], [113.47, 4.47], [113.25, 5.0], [113.35, 5.25], [113.25, 5.5], [113.47, 6.03]]]]}, "2026-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.25, 5.5], [113.47, 6.03], [113.82, 6.18], [113.97, 6.53], [114.32, 6.68], [114.47, 7.03], [115.0, 7.25], [115.25, 7.15], [115.5, 7.25], [116.03, 7.03], [116.25, 6.5], [116.15, 6.25], [116.25, 6.0], [116.03, 5.47], [115.68, 5.32], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.5, 4.25], [114.25, 4.35], [114.18, 4.32], [114.03, 3.97], [113.5, 3.75], [112.97, 3.97], [112.75, 4.5], [112.97, 5.03], [113.32, 5.18], [113.35, 5.25], [113.25, 5.5]]]]}, "2026-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.32, 5.18], [113.35, 5.25], [113.25, 5.5], [113.47, 6.03], [113.82, 6.18], [113.97, 6.53], [114.32, 6.68], [114.47, 7.03], [115.0, 7.25], [115.25, 7.15], [115.5, 7.25], [116.03, 7.03], [116.25, 6.5], [116.15, 6.25], [116.25, 6.0], [116.03, 5.47], [115.68, 5.32], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.5, 4.25], [114.25, 4.35], [114.18, 4.32], [114.15, 4.25], [114.25, 4.0], [114.03, 3.47], [113.5, 3.25], [113.25, 3.35], [113.0, 3.25], [112.47, 3.47], [112.25, 4.0], [112.47, 4.53], [112.82, 4.68], [112.97, 5.03], [113.32, 5.18]]]]}, "2026-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.32, 5.18], [113.35, 5.25], [113.25, 5.5], [113.47, 6.03], [113.82, 6.18], [113.97, 6.53], [114.32, 6.68], [114.47, 7.03], [115.0, 7.25], [115.25, 7.15], [115.5, 7.25], [116.03, 7.03], [116.25, 6.5], [116.15, 6.25], [116.25, 6.0], [116.03, 5.47], [115.68, 5.32], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.5, 4.25], [114.25, 4.35], [114.18, 4.32], [114.15, 4.25], [114.25, 4.0], [114.03, 3.47], [113.5, 3.25], [113.25, 3.35], [113.0, 3.25], [112.47, 3.47], [112.25, 4.0], [112.47, 4.53], [112.82, 4.68], [112.97, 5.03], [113.32, 5.18]]]]}, "2026-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.32, 5.18], [113.35, 5.25], [113.25, 5.5], [113.47, 6.03], [113.82, 6.18], [113.97, 6.53], [114.5, 6.75], [114.75, 6.65], [115.0, 6.75], [115.53, 6.53], [115.75, 6.0], [115.65, 5.75], [115.75, 5.5], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.68, 4.32], [114.53, 3.97], [114.18, 3.82], [114.03, 3.47], [113.5, 3.25], [113.25, 3.35], [113.0, 3.25], [112.47, 3.47], [112.25, 4.0], [112.47, 4.53], [112.82, 4.68], [112.97, 5.03], [113.32, 5.18]]]]}, "2026-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.47, 4.53], [112.82, 4.68], [112.85, 4.75], [112.75, 5.0], [112.97, 5.53], [113.32, 5.68], [113.47, 6.03], [113.82, 6.18], [113.97, 6.53], [114.5, 6.75], [114.75, 6.65], [115.0, 6.75], [115.25, 6.65], [115.5, 6.75], [116.03, 6.53], [116.25, 6.0], [116.03, 5.47], [115.68, 5.32], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.68, 4.32], [114.53, 3.97], [114.18, 3.82], [114.03, 3.47], [113.68, 3.32], [113.53, 2.97], [113.0, 2.75], [112.47, 2.97], [112.25, 3.5], [112.35, 3.75], [112.25, 4.0], [112.47, 4.53]]]]}, "2026-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.82, 4.68], [112.85, 4.75], [112.75, 5.0], [112.97, 5.53], [113.32, 5.68], [113.47, 6.03], [113.82, 6.18], [113.97, 6.53], [114.5, 6.75], [114.75, 6.65], [115.0, 6.75], [115.25, 6.65], [115.5, 6.75], [116.03, 6.53], [116.25, 6.0], [116.03, 5.47], [115.68, 5.32], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.68, 4.32], [114.53, 3.97], [114.18, 3.82], [114.03, 3.47], [113.68, 3.32], [113.53, 2.97], [113.0, 2.75], [112.75, 2.85], [112.5, 2.75], [111.97, 2.97], [111.75, 3.5], [111.97, 4.03], [112.32, 4.18], [112.47, 4.53], [112.82, 4.68]]]]}, "2026-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.82, 4.68], [112.85, 4.75], [112.75, 5.0], [112.97, 5.53], [113.32, 5.68], [113.47, 6.03], [114.0, 6.25], [114.25, 6.15], [114.32, 6.18], [114.47, 6.53], [115.0, 6.75], [115.25, 6.65], [115.5, 6.75], [116.03, 6.53], [116.25, 6.0], [116.03, 5.47], [115.68, 5.32], [115.53, 4.97], [115.18, 4.82], [115.03, 4.47], [114.68, 4.32], [114.53, 3.97], [114.18, 3.82], [114.03, 3.47], [113.68, 3.32], [113.53, 2.97], [113.0, 2.75], [112.75, 2.85], [112.5, 2.75], [111.97, 2.97], [111.75, 3.5], [111.97, 4.03], [112.32, 4.18], [112.47, 4.53], [112.82, 4.68]]]]}, "2026-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[113.0, 4.75], [113.53, 4.53], [113.75, 4.0], [113.53, 3.47], [113.18, 3.32], [113.03, 2.97], [112.5, 2.75], [111.97, 2.97], [111.75, 3.5], [111.97, 4.03], [112.32, 4.18], [112.47, 4.53], [113.0, 4.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.0165677661508425}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.7505350230959148}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.134282684326195, 26.132487960088838, 26.08376453284069, 26.102569443140283, 26.10927196404873, 26.08234095717927, 26.126639302571675, 26.083369445800827, 26.12422169276647, 26.1808690388998]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.126470184326195, 26.023798878987634, 25.972554779052757, 25.96305872599288, 25.95096867879232, 25.86604715983077, 25.89466501871749, 25.86683298746749, 25.820249176025413, 26.178753153483115]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.6033053773236077, -0.6502636386953132, -0.7067941745015777, -0.6972237395457953, -0.7236809802457043, -0.7716175132382236, -0.7597221214003866, -0.8344420088133954, -0.8134485629687366, -0.7604032472364679]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.6070007486179634, -0.7554580431460067, -0.8258732742816051, -0.8413184666127904, -0.8681550170838364, -0.9095008131777149, -0.896019848889523, -1.0165677661508425, -0.9692024261993879, -0.7631673443738123]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3116046638365004, -1.4477161224008734, -1.552232428092915, -1.5024356229729594, -1.5186437492664402, -1.5734273706837045, -1.5296653447726511, -1.65722305531085, -1.5967653298076765, -1.5113002028102367]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3182039860461547, -1.6046686979664857, -1.7547827535459748, -1.754393498720128, -1.7604321198063388, -1.77041671890522, -1.810668419185162, -2.0180815994706287, -1.8994165305560187, -1.5185241372594498]}}