FN Archimer Export Format
PT J
TI A two-component parameterization of marine ice-nucleating particles based on seawater biology and sea spray aerosol measurements in the Mediterranean Sea
BT 
AF TRUEBLOOD, Jonathan, V
   NICOSIA, Alessia
   ENGEL, Anja
   ZANCKER, Birthe
   RINALDI, Matteo
   FRENEY, Evelyn
   THYSSEN, Melilotus
   OBERNOSTERER, Ingrid
   DINASQUET, Julie
   BELOSI, Franco
   TOVAR-SANCHEZ, Antonio
   RODRIGUEZ-ROMERO, Araceli
   SANTACHIARA, Gianni
   GUIEU, Cecile
   SELLEGRI, Karine
AS 1:1;2:1;3:2;4:2;5:3;6:1;7:4;8:5;9:5,6;10:3;11:7;12:7;13:3;14:5;15:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:;
C1 Univ Clermont Auvergne, Lab Meteorol Phys LaMP, CNRS, F-63000 Clermont Ferrand, France.
   Helmholtz Ctr Ocean Res Kiel, GEOMAR, Kiel, Germany.
   CNR, Inst Atmospher Sci & Climate, I-40129 Bologna, Italy.
   Mediterranean Inst Oceanog, 163 Ave Luminy, Marseille, France.
   Sorbonne Univ, Lab Oceanog Villefranche, UMR7093, CNRS, Villefranche Sur Mer, France.
   Scripps Inst Oceanog, Marine Biol Res Div, La Jolla, CA 92037 USA.
   Inst Marine Sci Andalusia ICMAN, Dept Ecol & Coastal Management, CSIC, Puerto Real 07190, Spain.
C2 UNIV CLERMONT AUVERGNE, FRANCE
   IFM GEOMAR, GERMANY
   CNR, ITALY
   UNIV AIX MARSEILLE, FRANCE
   UNIV PARIS 06, FRANCE
   UNIV CALIF SAN DIEGO, USA
   ICMAN, SPAIN
IN DOAJ
IF 7.197
TC 9
UR https://archimer.ifremer.fr/doc/00688/79985/82974.pdf
   https://archimer.ifremer.fr/doc/00688/79985/82975.pdf
   https://archimer.ifremer.fr/doc/00688/79985/82976.pdf
   https://archimer.ifremer.fr/doc/00688/79985/82977.pdf
LA English
DT Article
CR PEACETIME
BO Pourquoi pas ?
AB Ice-nucleating particles (INPs) have a large impact on the climate-relevant properties of clouds over the oceans. Studies have shown that sea spray aerosols (SSAs), produced upon bursting of bubbles at the ocean surface, can be an important source of marine INPs, particularly during periods of enhanced biological productivity. Recent mesocosm experiments using natural seawater spiked with nutrients have revealed that marine INPs are derived from two separate classes of organic matter in SSAs. Despite this finding, existing parameterizations for marine INP abundance are based solely on single variables such as SSA organic carbon (OC) or SSA surface area, which may mask specific trends in the separate classes of INP. The goal of this paper is to improve the understanding of the connection between ocean biology and marine INP abundance by reporting results from a field study and proposing a new parameterization of marine INPs that accounts for the two associated classes of organic matter. The PEACETIME cruise took place from 10 May to 10 June 2017 in the Mediterranean Sea. Throughout the cruise, INP concentrations in the surface microlayer (INPSML) and in SSAs (INPSSA) produced using a plunging aquarium apparatus were continuously monitored while surface seawater (SSW) and SML biological properties were measured in parallel. The organic content of artificially generated SSAs was also evaluated. INPSML concentrations were found to be lower than those reported in the literature, presumably due to the oligotrophic nature of the Mediterranean Sea. A dust wet deposition event that occurred during the cruise increased the INP concentrations measured in the SML by an order of magnitude, in line with increases in iron in the SML and bacterial abundances. Increases in INPSSA were not observed until after a delay of 3 days compared to increases in the SML and are likely a result of a strong influence of bulk SSW INPs for the temperatures investigated (T = -18 degrees C for SSAs, T = -15 degrees C for SSW). Results confirmed that INPSSA are divided into two classes depending on their associated organic matter. Here we find that warm (T >= 22 degrees C) INPSSA concentrations are correlated with water-soluble organic matter (WSOC) in the SSAs, but also with SSW parameters (particulate organic carbon, POCSSW and INPSSW,-16C) while cold INPSSA (T < 22 degrees C) are correlated with SSA water-insoluble organic carbon (WIOC) and SML dissolved organic carbon (DOC) concentrations. A relationship was also found between cold INPSSA and SSW nano- and microphytoplankton cell abundances, indicating that these species might be a source of water-insoluble organic matter with surfactant properties and specific IN activities. Guided by these results, we formulated and tested multiple parameterizations for the abundance of INPs in marine SSAs, including a single-component model based on POCSSW and a two-component model based on SSA WIOC and OC. We also altered a previous model based on OCSSA content to account for oligotrophy of the Mediterranean Sea. We then compared this formulation with the previous models. This new parameterization should improve attempts to incorporate marine INP emissions into numerical models. 
PY 2021
PD MAR
SO Atmospheric Chemistry And Physics
SN 1680-7316
PU Copernicus Gesellschaft Mbh
VL 21
IS 6
UT 000634733700004
BP 4659
EP 4676
DI 10.5194/acp-21-4659-2021
ID 79985
ER

EF