English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This study validates trace gas and thermodynamic retrievals from nadirinfrared spectroscopic measurements recorded by the UK Met Office AirborneResearch Interferometer Evaluation System (ARIES) – a thermal infrared,Fourier transform spectrometer (TIR-FTS) on the UK Facility for AirborneAtmospheric Measurements (FAAM) BAe-146 aircraft. Trace-gas-concentration and thermodynamic profiles have been retrieved andvalidated for this study throughout the troposphere and planetary boundarylayer (PBL) over a range of environmental variability using data from aircraftcampaigns over and around London, the US Gulf Coast, and the Arctic Circleduring the Clear air for London(ClearfLo), Joint Airborne IASI (Infrared Atmospheric Sounding Interferometer) Validation Experiment (JAIVEx), and Measurements, process studies, and Modelling (MAMM) aircraft campaigns, respectively.Vertically resolved retrievals of temperature and water vapour (H2O),and partial-column retrievals of methane (CH4), carbon monoxide (CO),and ozone (O3) (over both land and sea) were compared to correspondingmeasurements from high-precision in situ analysers and dropsondes operatedon the FAAM aircraft. Average degrees of freedom for signal (DOFS) over a0–9 km column range were found to be 4.97, 3.11, 0.91, 1.10, and 1.62 fortemperature, H2O, CH4, CO, and O3, respectively, whenretrieved on 10 vertical levels. Partial-column mean biases (and biasstandard error) between the surface and ~ 9 km, when averagedacross all flight campaigns, were found to be −0.7(±0.3) K,−479(±56) ppm, −11(±2) ppb, −3.3(±1.0) ppb, and+3.5(±1.0) ppb, respectively, whilst the typical a posteriori(total) uncertainties for individually retrieved profiles were 0.4,9.5, 5.0, 21.2, and 15.0 %, respectively. Averaging kernels (AKs) derived for progressively lower altitudes show improvingsensitivity to lower atmospheric layers when flying at lower altitudes.Temperature and H2O display significant vertically resolved sensitivitythroughout the column, whilst trace gases are usefully retrieved only aspartial-column quantities, with maximal sensitivity for trace gases otherthan H2O within a layer 1 and 2 km below the aircraft. This studydemonstrates the valuable atmospheric composition information content thatcan be obtained by ARIES nadir TIR remote sensing for atmospheric processstudies

Atmospheric composition and thermodynamic retrievals from the ARIES airborne TIR-FTS system – Part 2: Validation and results from aircraft campaigns