General information
Access mode Physical access
Infrastructure name and acronym Roland von Glasow Air-Sea-Ice Chamber (RvG-ASIC) 
Frost flower fields on artificial sea-ice. The temperature in the facility here is –28°C
Ice-coring of artificial sea-ice
Location 52°37’15” N, 1°14’14” E
School of Environmental Sciences, University of East Anglia,
Norwich, NR4 7TJ, United Kingdom
Legal name of organisation operating the infrastructure University of East Anglia (UEA)
Description of the infrastructure
Brief general description of the infrastructure to which access is offered

The Roland von Glasow Air-Sea-Ice Chamber (RvG-ASIC) facility at the University of East Anglia (UEA) comprises a coupled atmosphere–ocean–sea-ice simulation chamber designed to investigate the role of first-year sea-ice in tropospheric chemistry. The temperature of the chamber can be controlled within the range –55 to +30 °C, with a stability of ±0.3 °C.

The chamber can also be run in ocean-atmosphere mode (above –2 ºC), snow-atmosphere mode (no liquid water) or in dry mode for purely atmospheric investigations. It therefore provides a platform for a diverse range of multi-disciplinary experiments to study physical, chemical and biological between interactions between atmosphere, ocean, ice and snow.

The chamber comprises a glass tank "ocean" (2.4 m × 1.4 m × 1.1 m; 3.5 m3 water volume) with a removable FEP film-enclosed "atmosphere" above (2.4 m × 1.4 m × (0.1–1 m); 0.3 to 3.3 m3 air volume). The "ocean" is equipped with a wave generator and circulation pump. Controlled illumination is provided by sun-simulating LED bands and UVA and UVB fluorescent light tubes (280 to 700 nm). All light sources can be adjusted individually. In situ actinic fluxes can be measured with a 2π spectral radiometer.

The facility is equipped with a range of analytical instruments for atmosphere, ice and ocean. In the atmosphere, gas mole fractions of CH4, CO2, H2O, O3, NOx, NO and NO2 can be measured continuously, together with temperature, humidity and wind speed. The ocean is sampled with conductivity-temperature (CT) probes. A "salinity harp" can be used to obtain CT profiles in ice and across the ice-ocean interface. Additional pressure (stress) and UV-VIS light sensors (fibre-optic tree) measure in ice at 1-2 cm depth intervals.

Post-experiment sampling and analysis are possible through ice-core and ice block section collection, via a field-deployable ice corer, a bandsaw and a microtome for thin sections. For chemical analyses of ice, a H2O2 chemiluminescence analyser and optical absorption spectrometer are available.

All data are centrally collected on a dedicated data acquisition and visualisation server. Two camera systems above and below water provide time-lapse photography and continuous video feeds.

Services currently offered by the infrastructure and its research environment

Full access to the RvG-ASIC, including:
- induction to chamber and all instruments
- training on data acquisition and visualisation server
- preparatory work (e.g. chamber filling, cleaning, emptying, installation of atmospheric enclosure)

Modalities of access and support offered under EUROCHAMP-2020
Typical duration of work

10 days per experiment, including 3 days for set up and ice-growth, 5 days experiment and 2 days clean-up / packing up / data distribution. Variations may occur, depending on starting conditions required and how much ice is required to be grown.

Please contact the facility prior to access application to discuss required access periods for specific experiment conditions.

Community/user type served

RvG-ASIC is mainly used for academic research, but there are opportunities for industrial users / SMEs for sensor and other equipment testing in a variety of extreme polar and ocean simulated conditions, e.g. In / under ice, cold seawater or freshwater, cold atmospheric conditions, under natural lighting conditions or enhanced UV conditions.

Scientific and technical support offered Training for the general use of the facility along with data processing will be provided as needed. Advice on set up / experimental conditions will be offered if requested. Technical and scientific assistance by affiliated researchers within UEA. Data storage and access to data remotely post experiment.
Logistic and administrative support offered Administrative support for ordering chemicals and consumables, logistic support for the management of chemicals. Guest office space. Help with accommodation (available on campus or nearby).
Person in charge of access provision at the infrastructure

Prof. Jan Kaiser, Professor of Biogeochemistry

 Extended technical information
Physical description  The RvG ASIC is a glass tank construction housed in a predominantly stainless steel environmental chamber. The tank can have a Teflon FEP atmospheric enclosure attached to the top of the tank if the experiment requires.

S/V ratio: 4.3 m-1
Pressure range: 950 to 1050 mbar
Temperature range for environmental chamber -55 °C to +30 °C.
No pressure control. 
RH range: 20 to 100%
Irradiation JNO2 & other J: 
UV-A (280-340 nm) |  7.4 × 10^(-4)
UV-B (320-390nm)  |  2.6 × 10^(-4)
VIS LED (400-770 nm)  | 2.4 × 10^(-5)
All               | 1.03 × 10^(-3)
Mechanical description RVG
Mechanical description 

Volume: Glass tank, maximum capacity: 3500 litres of water

Width: 1.38 m

Depth: 1.1 m

Length: 2.4 m Maximum atmospheric enclosure size: 1 m x 2.4 m x 1.38 m 

Auxiliary mechanism

tank mixing time τ = (4.2±0.1) min

coldroom air-exchange time τ = (0.66±0.07) d

Irradiation spectra  RVG
Description paper

Thomas M, France J, Crabeck O, Hall B, Hof V, Notz D, Rampai T, Riemenschneider L, Tooth OJ, Tranter M, Kaiser J (2021) The Roland von Glasow Air-Sea-Ice Chamber (RvG-ASIC): an experimental facility for studying ocean–sea-ice–atmosphere interactions Atmos Meas Tech 14:1833 10.5194/amt-14-1833-2021.