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O. Koren
and
J. M.Cook

Abstract

Full access
J. M. Flores
,
G. Bourdin
,
O. Altaratz
,
M. Trainic
,
N. Lang-Yona
,
E. Dzimban
,
S. Steinau
,
F. Tettich
,
S. Planes
,
D. Allemand
,
S. Agostini
,
B. Banaigs
,
E. Boissin
,
E. Boss
,
E. Douville
,
D. Forcioli
,
P. Furla
,
P. E. Galand
,
M. Sullivan
,
É. Gilson
,
F. Lombard
,
C. Moulin
,
S. Pesant
,
J. Poulain
,
S. Reynaud
,
S. Romac
,
S. Sunagawa
,
O. P. Thomas
,
R. Troublé
,
C. de Vargas
,
R. Vega Thurber
,
C. R. Voolstra
,
P. Wincker
,
D. Zoccola
,
C. Bowler
,
G. Gorsky
,
Y. Rudich
,
A. Vardi
, and
I. Koren
Full access
J. M. Flores
,
G. Bourdin
,
O. Altaratz
,
M. Trainic
,
N. Lang-Yona
,
E. Dzimban
,
S. Steinau
,
F. Tettich
,
S. Planes
,
D. Allemand
,
S. Agostini
,
B. Banaigs
,
E. Boissin
,
E. Boss
,
E. Douville
,
D. Forcioli
,
P. Furla
,
P. E. Galand
,
M. B. Sullivan
,
É. Gilson
,
F. Lombard
,
C. Moulin
,
S. Pesant
,
J. Poulain
,
S. Reynaud
,
S. Romac
,
S. Sunagawa
,
O. P. Thomas
,
R. Troublé
,
C. de Vargas
,
R. Vega Thurber
,
C. R. Voolstra
,
P. Wincker
,
D. Zoccola
,
C. Bowler
,
G. Gorsky
,
Y. Rudich
,
A. Vardi
, and
I. Koren

Abstract

Marine aerosols play a significant role in the global radiative budget, in clouds’ processes, and in the chemistry of the marine atmosphere. There is a critical need to better understand their production mechanisms, composition, chemical properties, and the contribution of ocean-derived biogenic matter to their mass and number concentration. Here we present an overview of a new dataset of in situ measurements of marine aerosols conducted over the 2.5-yr Tara Pacific Expedition over 110,000 km across the Atlantic and Pacific Oceans. Preliminary results are presented here to describe the new dataset that will be built using this novel set of measurements. It will characterize marine aerosols properties in detail and will open a new window to study the marine aerosol link to the water properties and environmental conditions.

Free access
A. G. Slater
,
C. A. Schlosser
,
C. E. Desborough
,
A. J. Pitman
,
A. Henderson-Sellers
,
A. Robock
,
K. Ya Vinnikov
,
J. Entin
,
K. Mitchell
,
F. Chen
,
A. Boone
,
P. Etchevers
,
F. Habets
,
J. Noilhan
,
H. Braden
,
P. M. Cox
,
P. de Rosnay
,
R. E. Dickinson
,
Z-L. Yang
,
Y-J. Dai
,
Q. Zeng
,
Q. Duan
,
V. Koren
,
S. Schaake
,
N. Gedney
,
Ye M. Gusev
,
O. N. Nasonova
,
J. Kim
,
E. A. Kowalczyk
,
A. B. Shmakin
,
T. G. Smirnova
,
D. Verseghy
,
P. Wetzel
, and
Y. Xue

Abstract

Twenty-one land surface schemes (LSSs) performed simulations forced by 18 yr of observed meteorological data from a grassland catchment at Valdai, Russia, as part of the Project for the Intercomparison of Land-Surface Parameterization Schemes (PILPS) Phase 2(d). In this paper the authors examine the simulation of snow. In comparison with observations, the models are able to capture the broad features of the snow regime on both an intra- and interannual basis. However, weaknesses in the simulations exist, and early season ablation events are a significant source of model scatter. Over the 18-yr simulation, systematic differences between the models’ snow simulations are evident and reveal specific aspects of snow model parameterization and design as being responsible. Vapor exchange at the snow surface varies widely among the models, ranging from a large net loss to a small net source for the snow season. Snow albedo, fractional snow cover, and their interplay have a large effect on energy available for ablation, with differences among models most evident at low snow depths. The incorporation of the snowpack within an LSS structure affects the method by which snow accesses, as well as utilizes, available energy for ablation. The sensitivity of some models to longwave radiation, the dominant winter radiative flux, is partly due to a stability-induced feedback and the differing abilities of models to exchange turbulent energy with the atmosphere. Results presented in this paper suggest where weaknesses in macroscale snow modeling lie and where both theoretical and observational work should be focused to address these weaknesses.

Full access
Peter Bissolli
,
Catherine Ganter
,
Ademe Mekonnen
,
Ahira Sánchez-Lugo
,
Zhiwei Zhu
,
A. Abida
,
W. Agyakwah
,
Laura S. Aldeco
,
Eric J. Alfaro
,
Teddy Allen
,
Lincoln M. Alves
,
Jorge A. Amador
,
B. Andrade
,
P. Asgarzadeh
,
Grinia Avalos
,
Julian Baez
,
M. Yu. Bardin
,
E. Bekele
,
Renato Bertalanic
,
Oliver Bochníček
,
Brandon Bukunt
,
Blanca Calderón
,
Jayaka D. Campbell
,
Elise Chandler
,
Candice S Charlton
,
Vincent Y. S. Cheng
,
Leonardo A. Clarke
,
Kris Correa
,
Catalina R. Cortés Salazar
,
Felipe Costa
,
Lenka Crhová
,
Ana Paula Cunha
,
Mesut Demircan
,
K. R. Dhurmea
,
Diana A. Domínguez
,
Dashkhuu Dulamsuren
,
M. ElKharrim
,
Jhan-Carlo Espinoza
,
A. Fazl-Kezemi
,
Nava Fedaeff
,
Chris Fenimore
,
Steven Fuhrman
,
Karin Gleason
,
Charles “Chip” P. Guard
,
Samson Hagos
,
Mizuki Hanafusa
,
Richard R. Heim Jr.
,
John Kennedy
,
Sverker Hellström
,
Hugo G. Hidalgo
,
I. A. Ijampy
,
Gyo Soon Im
,
G. Jumaux
,
K. Kabidi
,
Kenneth Kerr
,
Yelena Khalatyan
,
Valentina Khan
,
Mai Van Khiem
,
Tobias Koch
,
Gerbrand Koren
,
Natalia N. Korshunova
,
A. C. Kruger
,
Mónika Lakatos
,
Jostein Mamen
,
Hoang Phuc Lam
,
Mark A. Lander
,
Waldo Lavado-Casimiro
,
Tsz-Cheung Lee
,
Kinson H. Y. Leung
,
Xuefeng Liu
,
Rui Lu
,
José A. Marengo
,
Mohammadi Marjan
,
Ana E. Martínez
,
Charlotte McBride
,
Mirek Mietus
,
Noelia Misevicius
,
Aurel Moise
,
Jorge Molina-Carpio
,
Natali Mora
,
Awatif E. Mostafa
,
O. Ndiaye
,
Juan J. Nieto
,
Kristin Olafsdottir
,
Reynaldo Pascual Ramírez
,
David Phillips
,
Amos Porat
,
Esteban Rodriguez Guisado
,
Madhavan Rajeevan
,
Andrea M. Ramos
,
Cristina Recalde Coronel
,
Alejandra J. Reyes Kohler
,
M. Robjhon
,
Josyane Ronchail
,
Roberto Salinas
,
Hirotaka Sato
,
Hitoshi Sato
,
Amal Sayouri
,
Serhat Sensoy
,
Amsari Mudzakir Setiawan
,
F. Sima
,
Adam Smith
,
Matthieu Sorel
,
Sandra Spillane
,
Jacqueline M. Spence
,
O. P. Sreejith
,
A. K. Srivastava
,
Tannecia S. Stephenson
,
Kiyotoshi Takahashi
,
Michael A. Taylor
,
Wassila M. Thiaw
,
Skie Tobin
,
Lidia Trescilo
,
Adrian R. Trotman
,
Cedric J. Van Meerbeeck
,
A. Vazifeh
,
Shunya Wakamatsu
,
M. F. Zaheer
,
F. Zeng
, and
Peiqun Zhang
Free access