In:
Earth System Science Data, Copernicus GmbH, Vol. 13, No. 7 ( 2021-07-02), p. 3115-3153
Abstract:
Abstract. Due to its remote location and extreme weather conditions, atmospheric in situ
measurements are rare in the Southern Ocean. As a result, aerosol–cloud
interactions in this region are poorly understood and remain a major source of
uncertainty in climate models. This, in turn, contributes substantially to
persistent biases in climate model simulations such as the well-known positive
shortwave radiation bias at the surface, as well as biases in numerical
weather prediction models and reanalyses. It has been shown in previous
studies that in situ and ground-based remote sensing measurements across the
Southern Ocean are critical for complementing satellite data sets due to the
importance of boundary layer and low-level cloud processes. These processes
are poorly sampled by satellite-based measurements and are often obscured by
multiple overlying cloud layers. Satellite measurements also do not constrain
the aerosol–cloud processes very well with imprecise estimation of cloud
condensation nuclei. In this work, we present a comprehensive set of ship-based
aerosol and meteorological observations collected on the 6-week
Southern Ocean Ross Sea Marine Ecosystem and Environment voyage
(TAN1802) voyage of RV Tangaroa across the Southern Ocean, from Wellington, New Zealand, to
the Ross Sea, Antarctica. The voyage was carried out from 8 February to
21 March 2018. Many distinct, but contemporaneous, data sets were collected
throughout the voyage. The compiled data sets include measurements from a
range of instruments, such as (i) meteorological conditions at the sea surface
and profile measurements; (ii) the size and concentration of particles; (iii)
trace gases dissolved in the ocean surface such as dimethyl sulfide and
carbonyl sulfide; (iv) and remotely sensed observations of low clouds. Here,
we describe the voyage, the instruments, and data processing, and provide a brief
overview of some of the data products available. We encourage the scientific
community to use these measurements for further analysis and model evaluation
studies, in particular, for studies of Southern Ocean clouds, aerosol, and
their interaction. The data sets presented in this study are publicly
available at https://doi.org/10.5281/zenodo.4060237 (Kremser et al., 2020).
Type of Medium:
Online Resource
ISSN:
1866-3516
DOI:
10.5194/essd-13-3115-2021
Language:
English
Publisher:
Copernicus GmbH
Publication Date:
2021
detail.hit.zdb_id:
2475469-9
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