[{"name":"oden-artofmelt-2023-microwave-profiles-raw-1","title":"Temperature and humidity profiles from microwave radiometer during expedition ARTofMELT, Arctic Ocean, 2023 \u2014 raw data","summary":"Profiles of temperature and humidity are obtained from an RPG HATPRO5 microwave radiometer deployed on the roof of a container on the 4th deck of Oden during the expedition ARTofMELT (Atmospheric Rivers and the Onset of Arctic Melt) in the Fram Strait, operating continuously from 7 May, 2023, until 14 June, 2023.\r\n\r\nThis data is the direct profile output from the instrument and provides different data in different files.\r\n\r\nCorresponding complete, quality controlled and user friendly datasets with corrected data are available separately.","citations":"Tjernstr\u00f6m M, Murto S, Karalis M, Prytherch J (2024) Temperature and humidity profiles from microwave radiometer during expedition ARTofMELT, Arctic Ocean, 2023. Dataset version 1. Bolin Centre Database. https:\/\/doi.org\/10.17043\/oden-artofmelt-2023-microwave-profiles-1\r\n\r\nTjernstr\u00f6m M, Murto S (2024) Scripts for concatenating, processing NetCDF native output files and creating final netCDF files from HATPRO microwave-profiler observations, from the expedition ARTofMELT, Arctic Ocean, 2023. Software version 1.0.0. Bolin Centre Code Repository. https:\/\/doi.org\/10.57669\/oden-artofmelt-2023-microwave-profiles-1.0.0","comments":"##### Measurement system\r\nThe data is obtained from an RPG HATPRO5 microwave radiometer. This is a passive instrument detecting microwave radiation emitted by the atmosphere in a number of wavelengths. Profiles of temperature and humidity are retrieved from the microwave irradiances using a proprietary neural network, trained on reanalysis of Arctic profiles (ERA5).\r\n\r\nThe instrument has two modes of observing: vertical stare and scanning in the vertical. For the vertical-stare mode, well-defined weighting functions are utilized by scanning over several nearby frequencies. When the instrument is scanning in the vertical, the atmospheric path is progressively increased as the zenith angle increases and the maxima of the weighting functions are thereby shifted lower, hence increasing the resolution in the lower parts of the atmosphere. The latter is sometimes referred to as a \"boundary-layer mode\". The normal continuous mode for the instrument is the vertical stare. Every 15 minutes, this is briefly interrupted by the vertical-scan mode; however, this is only relevant for temperature profiles.\r\n\r\n##### Quality control\r\nThis is the raw data directly from the instrument and no additional quality control is applied.\r\n\r\n##### Associated processed data and code\r\nA concatenated, packed and corrected dataset derived from these data is available [Tjernstr\u00f6m et al. (2024)](https:\/\/bolin.su.se\/data\/oden-artofmelt-2023-microwave-profiles-1). Computer codes, in Matlab and Python that were used to derive the dataset in NetCDF format using these raw data is also available [Tjernstr\u00f6m and Murto (2024)](https:\/\/git.bolin.su.se\/bolin\/oden-artofmelt-2023-microwave-profiles).\r\n\r\n##### Data creators' roles\r\nThe instrument system was continuously logging and was monitored by the Stockholm University Meteorology team onboard Oden:\r\n- Michael Tjernstr\u00f6m (chief scientist and dataset creator)\r\n- Sonja Murto (operator)\r\n- Michail Karalis (operator)\r\n\r\nJohn Prytherch (also Stockholm University) is responsible for the instrument system.\r\n\r\n##### The expedition\r\nData were collected during the ARTofMELT 2023 expedition on board the Swedish icebreaker Oden, which was organized by the [Swedish Polar Research Secretariat](https:\/\/www.polar.se\/en\/expeditions\/previous-expeditions\/arctic\/artofmelt-2023\/) from 8 May through 14 June, 2023.","category":"Atmosphere","subcategory":"Weather observations","keywords":"Atmospheric profiling; Temperature; Humidity; Microwave profiling; Arctic; Arctic Ocean; ARTofMELT; ARTofMELT 2023 expedition; Icebreaker Oden","scientist":"Michael Tjernstr\u00f6m, Sonja Murto, Michail Karalis, John Prytherch","firstname":"Michael","lastname":"Tjernstr\u00f6m","address":"Department of Meteorology; Stockholm University","postalcode":"SE-106 91","city":"Stockholm","province":"","country":"Sweden","parameters":"Earth science","location":"Ocean > Arctic Ocean","progress":"","language":"English","project":"ARTofMELT expedition in spring 2023. This dataset was collected with instruments that are part of \"Oden as a National Infrastructure\", funded by the Swedish Infrastructure Council (RFI: 2021-00153) and also funded by the Knut and Alice Wallenberg Foundation (Grant 2016-0024). The project ARTofMELT was funded by the Swedish Research Council (VR: 2022-03052).","publisher":"Bolin Centre Database","version":"1","constrains":"","access":""}]