Air temperature and near-surface meteorology datasets on three Swiss glaciers - Extreme 2022 Summer

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 GLACIER METEOROLOGICAL DATA
    SWISS ALPS -2022
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Data gathered and structured by Thomas Shaw (WSL, Switzerland (until Oct 2022)).

On and off-glacier meteorological data were gathered and analysed as part of a Marie-Curie project 'TEMPEST' (tempestglacier.com).
The dataset consists of hourly low-cost AWS (Davis Vantage Pro2) and simple temperature ('T-')logger (Onset TidBitv2) sensor records on three glaciers in the Swiss Alps (Canton Valais).

The glaciers are:
Haut Glacier d'Arolla (45.967°N, 7.526°E)
Glacier d'Otemma (45.956°N, 7.454°E)
Glacier du Corbassière (45.975°N, 7.303°E)

Data are provided in individual Excel files per glacier that contain all hourly data for the sub-period of comparison (11 August-18 September, 2022).
Data are quality controlled and checked for obvious errors. Any uncertain values are set to NaN.
Air temperature data at 'T-Logger' stations were corrected for heating errors using the comparison of measurements in artificially (AWS) and naturally ventilated (T-Logger) radiation shields on Arolla and Corbassiere glaciers.
A multiple linear regression model was applied to estimate these differences at all T-Loggers on all glaciers as a function of incoming shortwave radiation (MeteoSwiss station-derived) and wind speed (measured at AWS).

Each Excel file contains a 'META' tab for simple metadata related to station locations (latitude 'LAT' (°), longitude 'LON' (°), elevation 'ELE' (m a.s.l.) and flowpath length 'FPL' (m)) and a 'DATA' tab for the hourly data. 
Suffixes to the station names in each column provide the variable measured at that site:
'TA' - 2m air temperature (°C)
'TA_Hi' - Maximum air temperature for timestep (°C)
'TA_Lo' - Minimum air temperature for timestep (°C)
'RH' - 2m relative humiditiy (%)
'FF' - Wind speed (m s^-1)
'FF_Hi' - Maximum wind speed for timestep (m s^-1)
'FF_Lo' - Minimum wind speed for timestep (m s^-1)
'DIR' - Wind direction (°)
'DEW' - Dewpoint temperature (°C)
'PRESS' - Air pressure (mbar)
'CHILL' - Calculated wind chill temperature (°C)
'Heat_idx' - Calculated heat index (°C)
'THSW' - A calculated index that uses humidity and temperature like for the Heat Index, but also includes the heating effects of sunshine and the cooling effects of wind (like Wind Chill) to calculate an apparent temperature of what it "feels" like out in the shade

Wind speeds and direction measured at off-glacier sites 'OG' are for the lower off-glacier station ('OG_Low'). 

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This work was funded by the EU Horizon 2020 Marie Skłodowska-Curie Actions Grant 101026058.