{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:08.512842", "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-Apr-08_to_2012-Apr-11_104.5_2.0"}, "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": 2012040000514}, "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": "April 08 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 11 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": 64882.97923817765}, "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": ["Indonesia", "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": ["Malacca Strait", "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": 2.0}, "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": 104.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "104.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 102.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 106.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.97, 2.53], [102.32, 2.68], [102.47, 3.03], [102.82, 3.18], [102.97, 3.53], [103.5, 3.75], [104.03, 3.53], [104.18, 3.18], [104.53, 3.03], [104.68, 2.68], [104.75, 2.65], [105.0, 2.75], [105.53, 2.53], [105.75, 2.0], [105.65, 1.75], [105.75, 1.5], [105.65, 1.25], [105.7, 1.13], [106.0, 1.25], [106.53, 1.03], [106.75, 0.5], [106.53, -0.03], [106.0, -0.25], [105.47, -0.03], [105.3, 0.37], [105.0, 0.25], [104.75, 0.35], [104.5, 0.25], [104.25, 0.35], [104.0, 0.25], [103.47, 0.47], [103.32, 0.82], [103.0, 0.96], [102.5, 0.75], [101.97, 0.97], [101.75, 1.5], [101.85, 1.75], [101.75, 2.0], [101.97, 2.53]]]]}, "2012-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.97, 2.53], [102.32, 2.68], [102.47, 3.03], [102.82, 3.18], [102.97, 3.53], [103.5, 3.75], [104.03, 3.53], [104.18, 3.18], [104.53, 3.03], [104.68, 2.68], [104.75, 2.65], [105.0, 2.75], [105.53, 2.53], [105.75, 2.0], [105.65, 1.75], [105.75, 1.5], [105.65, 1.25], [105.68, 1.18], [105.75, 1.15], [106.0, 1.25], [106.53, 1.03], [106.75, 0.5], [106.53, -0.03], [106.0, -0.25], [105.75, -0.15], [105.5, -0.25], [105.25, -0.15], [105.0, -0.25], [104.75, -0.15], [104.5, -0.25], [103.97, -0.03], [103.82, 0.32], [103.47, 0.47], [103.32, 0.82], [103.0, 0.96], [102.5, 0.75], [101.97, 0.97], [101.75, 1.5], [101.85, 1.75], [101.75, 2.0], [101.97, 2.53]]]]}, "2012-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.97, 2.53], [102.32, 2.68], [102.47, 3.03], [102.82, 3.18], [102.97, 3.53], [103.5, 3.75], [104.03, 3.53], [104.18, 3.18], [104.53, 3.03], [104.68, 2.68], [104.75, 2.65], [105.0, 2.75], [105.53, 2.53], [105.75, 2.0], [105.65, 1.75], [105.75, 1.5], [105.65, 1.25], [105.68, 1.18], [105.75, 1.15], [106.0, 1.25], [106.53, 1.03], [106.75, 0.5], [106.53, -0.03], [106.0, -0.25], [105.75, -0.15], [105.5, -0.25], [105.25, -0.15], [105.0, -0.25], [104.75, -0.15], [104.5, -0.25], [103.97, -0.03], [103.82, 0.32], [103.47, 0.47], [103.32, 0.82], [103.0, 0.96], [102.5, 0.75], [101.97, 0.97], [101.75, 1.5], [101.85, 1.75], [101.75, 2.0], [101.97, 2.53]]]]}, "2012-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.97, -0.03], [103.75, 0.5], [103.97, 1.03], [104.5, 1.25], [104.75, 1.15], [105.0, 1.25], [105.25, 1.15], [105.5, 1.25], [106.03, 1.03], [106.25, 0.5], [106.03, -0.03], [105.5, -0.25], [105.25, -0.15], [105.0, -0.25], [104.75, -0.15], [104.5, -0.25], [103.97, -0.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.4338646857519848}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.017194757404274}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.218740394968393, 26.328315301095756, 26.418175179937975, 26.776234619374407]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.407541611142506, 25.129454509143727, 25.365166433695094, 26.720415412415434]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.094697861615455, -1.0301615717529775, -0.967957881181695, -0.806066565254317]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3430466969923032, -1.4338646857519848, -1.1935174152690706, -0.8645141377153891]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7907392501327724, -1.6259094614458252, -1.5302445845812347, -1.3859735438993577]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2677116341380787, -2.0799003001461918, -1.8632041296317832, -1.5026129663568653]}}