Hyperspectral Infrared Observations of Arctic Snow, Sea Ice, and Non-Frozen Ocean from the RV Polarstern during the MOSAiC Expedition October 2019 to September 2020 DOI Creative Commons

Ester Nikolla,

Robert O. Knuteson, Jonathan Gero

et al.

Sensors, Journal Year: 2023, Volume and Issue: 23(12), P. 5755 - 5755

Published: June 20, 2023

This study highlights hyperspectral infrared observations from the Marine-Atmospheric Emitted Radiance Interferometer (M-AERI) collected as part of Department Energy (DOE) Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF) deployment on icebreaker RV Polarstern during Multidisciplinary drifting Observatory for Study Arctic Climate (MOSAiC) expedition October 2019 to September 2020. The ARM M-AERI directly measures radiance emission spectrum between 520 cm−1 and 3000 (19.2–3.3 μm) at 0.5 spectral resolution. These ship-based provide a valuable set data modeling snow/ice well validation assessment satellite soundings. Remote sensing using provides information sea surface properties (skin temperature emissivity), near-surface air temperature, lapse rate in lowest kilometer. Comparison with those DOE meteorological tower downlooking thermometer are generally good agreement some notable differences. Operational soundings NOAA-20 were also assessed radiosondes launched measurements snow showing reasonable agreement.

Language: Английский

Characteristics and sources of fluorescent aerosols in the central Arctic Ocean DOI Creative Commons
Ivo Beck, Alireza Moallemi, Benjamin Heutte

et al.

Elementa Science of the Anthropocene, Journal Year: 2024, Volume and Issue: 12(1)

Published: Jan. 1, 2024

The Arctic is sensitive to cloud radiative forcing. Due the limited number of aerosols present throughout much year, formation susceptible presence condensation nuclei and ice nucleating particles (INPs). Primary biological aerosol (PBAP) contribute INPs can impact phase, lifetime, properties. We yearlong observations hyperfluorescent (HFA), tracers for PBAP, conducted with a Wideband Integrated Bioaerosol Sensor, New Electronics Option during Multidisciplinary drifting Observatory Study Climate (MOSAiC) expedition (October 2019–September 2020) in central Arctic. investigate influence potential anthropogenic natural sources on characteristics HFA relate our measurements INP MOSAiC. Anthropogenic influenced haze period. But surprisingly, we also found sporadic “bursts” PBAP this time, albeit unclear origin. between May August 2020 October 2019 indicate strong contribution HFA. Notably from August, coincided at elevated temperatures, that is, >−9°C, suggesting contributed “warm INP” concentration. air mass residence time area were dominated by open ocean sea ice, pointing toward within Ocean. As changes drastically due climate warming expected implications aerosol–cloud interactions, recommend targeted reveal their nature (e.g., bacteria, diatoms, fungal spores) atmosphere relevant surface sources, such as snow melt ponds, leads, water, gain further insights into source processes how they might change future.

Language: Английский

Citations

1
The annual cycle and sources of relevant aerosol precursor vapors in the central Arctic during the MOSAiC expedition DOI Creative Commons

Matthew Boyer,

Diego Aliaga, Lauriane L. J. Quéléver

et al.

Atmospheric chemistry and physics, Journal Year: 2024, Volume and Issue: 24(22), P. 12595 - 12621

Published: Nov. 14, 2024

Abstract. In this study, we present and analyze the first continuous time series of relevant aerosol precursor vapors from central Arctic (north 80° N) during Multidisciplinary drifting Observatory for Study Climate (MOSAiC) expedition. These include sulfuric acid (SA), methanesulfonic (MSA), iodic (IA). We use FLEXPART simulations, inverse modeling, sulfur dioxide (SO2) mixing ratios, chlorophyll a (chl a) observations to interpret seasonal variability in vapor concentrations identify dominant sources. Our results show that both natural anthropogenic sources are SA Arctic, but associated with haze most prevalent. MSA an order magnitude higher polar day than night due changes biological activity. Peak were observed May, which corresponds timing annual peak chl north 75° N. IA exhibit two distinct peaks year, namely spring secondary autumn, suggesting depend on solar radiation sea ice conditions. general, cycles SA, MSA, Ocean related conditions, expect environment will affect these future. The subsequent influence processes remains uncertain, highlighting need continued Arctic.

Language: Английский

Citations

1
Contributions of biomass burning in 2019 and 2020 to Arctic black carbon and its transport pathways DOI
Xintong Chen, Shichang Kang, Junhua Yang

et al.

Atmospheric Research, Journal Year: 2023, Volume and Issue: 296, P. 107069 - 107069

Published: Oct. 21, 2023

Language: Английский

Citations

3
Ground-based remote sensing of aerosol properties using high-resolution infrared emission and lidar observations in the High Arctic DOI Creative Commons
Denghui Ji, Mathias Palm, Christoph Ritter

et al.

Atmospheric measurement techniques, Journal Year: 2023, Volume and Issue: 16(7), P. 1865 - 1879

Published: April 12, 2023

Abstract. Arctic amplification, the phenomenon that is warming faster than global mean, still not fully understood. The Transregional Collaborative Research Centre “TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, Feedback Mechanisms (AC)3” program, funded by Deutsche Forschungsgemeinschaft (DFG, German Foundation), contributes towards this research topic. For purpose of measuring aerosol components, a Fourier transform infrared spectrometer (FTIR), for downwelling emission (in operation since 2019), Raman lidar are operated at joint Alfred Wegener Institute Polar Marine Paul Emile Victor (AWIPEV) base in Ny-Ålesund, Spitsbergen (79∘ N, 12∘ E). To carry out retrieval using measurements from FTS, LBLDIS algorithm, based on combination Line-by-Line Radiative Transfer Model (LBLRTM) DIScrete Ordinate (DISORT) modified different types (dust, sea salt, black carbon, sulfate), optical depth (AOD), effective radius (Reff). Using measurement, an cloud classification method developed to provide basic information about distribution aerosols or clouds atmosphere used as indicator perform retrievals with FTS. Therefore, two-instrument joint-observation scheme designed subsequently data measured 2019 present. In order introduce measurement technique detail, aerosol-only case study presented 10 June 2020. case, results show sulfate dominant throughout day (τ900cm-1 = 0.007 ± 0.0027), followed dust 0.0039 0.0029) carbon 0.0017 0.0007). Sea salt 0.0012 0.0002), which has weakest ability wave band, shows lowest AOD value. Such proportions sulfate, dust, BC also good agreement Modern-Era Retrospective analysis Applications version 2 (MERRA-2) reanalysis data. Additionally, comparison Sun photometer (AErosol RObotic NETwork – AERONET) daily variation retrieved FTS be similar photometer. method, long-term observations (from April August 2020) presented. We find often present Arctic; it higher spring lower summer. Similarly, frequently observed Arctic, less obvious seasonal sulfate. A outburst event each spring, dominant, whereas relatively low. addition, enhancement summertime, might due melting ice emissions nearby open water. From over long time period, no clear correlations found; thus, aforementioned species can independently one another.

Language: Английский

Citations

2
Hyperspectral Infrared Observations of Arctic Snow, Sea Ice, and Non-Frozen Ocean from the RV Polarstern during the MOSAiC Expedition October 2019 to September 2020 DOI Creative Commons

Ester Nikolla,

Robert O. Knuteson, Jonathan Gero

et al.

Sensors, Journal Year: 2023, Volume and Issue: 23(12), P. 5755 - 5755

Published: June 20, 2023

This study highlights hyperspectral infrared observations from the Marine-Atmospheric Emitted Radiance Interferometer (M-AERI) collected as part of Department Energy (DOE) Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF) deployment on icebreaker RV Polarstern during Multidisciplinary drifting Observatory for Study Arctic Climate (MOSAiC) expedition October 2019 to September 2020. The ARM M-AERI directly measures radiance emission spectrum between 520 cm−1 and 3000 (19.2–3.3 μm) at 0.5 spectral resolution. These ship-based provide a valuable set data modeling snow/ice well validation assessment satellite soundings. Remote sensing using provides information sea surface properties (skin temperature emissivity), near-surface air temperature, lapse rate in lowest kilometer. Comparison with those DOE meteorological tower downlooking thermometer are generally good agreement some notable differences. Operational soundings NOAA-20 were also assessed radiosondes launched measurements snow showing reasonable agreement.

Language: Английский

Citations

1