A5038066702- Oceanographic and Atmospheric Processes
- Climate variability and models
- Marine and coastal ecosystems
- Geology and Paleoclimatology Research
- Geological formations and processes
- Atmospheric and Environmental Gas Dynamics
- Geophysics and Gravity Measurements
- Arctic and Antarctic ice dynamics
- Ocean Waves and Remote Sensing
- Reservoir Engineering and Simulation Methods
- Tropical and Extratropical Cyclones Research
- Marine and fisheries research
- Silicon and Solar Cell Technologies
- Thin-Film Transistor Technologies
- Meteorological Phenomena and Simulations
- Semiconductor materials and interfaces
- Underwater Vehicles and Communication Systems
- Coastal and Marine Management
- Ocean Acidification Effects and Responses
- Architecture and Computational Design
- Climate Change and Environmental Impact
- Cryospheric studies and observations
- Solidification and crystal growth phenomena
- Photovoltaic Systems and Sustainability
- Porphyrin Metabolism and Disorders
NOAA Atlantic Oceanographic and Meteorological Laboratories
2015-2024
National Oceanic and Atmospheric Administration
2010-2024
Helios Amper-Klinikum Dachau
2022
Bedford Institute of Oceanography
2022
Fisheries and Oceans Canada
2022
University of Miami
2002-2022
Fraunhofer Institute for Solar Energy Systems
2013
Fraunhofer Society
2012-2013
University of Tübingen
2008
Kiel University
1995-2000
observing the Global ocean with Profiling Floats
The Argo Program has been implemented and sustained for almost two decades, as a global array of about 4000 profiling floats. provides continuous observations ocean temperature salinity versus pressure, from the sea surface to 2000 dbar. successful installation its innovative data management system arose opportunistically combination great scientific need technological innovation. Through system, fundamental physical with broad societally-valuable applications, built on cost-efficient robust...
In the past two decades, Argo Program has collected, processed and distributed over million vertical profiles of temperature salinity from upper kilometers global ocean. A similar number subsurface velocity observations near 1000 dbar have also been collected. This paper recounts history Program, its aspiration arising out World Ocean Circulation Experiment, to development implementation instrumentation telecommunication systems, various technical problems encountered. We describe data...
The subsurface oceanic circulation is an important part of the Earth climate system. Subsurface currents traditionally are inferred indirectly from distributions temperature and dissolved substances, occasionally supplemented by current meter measurements. Neutrally‐buoyant floats however, now enable us to obtain for first time directly measured intermediate depth velocity fields over large areas such as western South Atlantic. Here, our combined data set provides unprecedented observations...
Abstract Changes in the ventilation of oxygen minimum zone (OMZ) tropical North Atlantic are studied using oceanographic data from 18 research cruises carried out between 28.5° and 23°W during 1999–2008 as well historical referring to period 1972–85. In core OMZ at about 400-m depth, a highly significant decrease 15 μmol kg−1 is found two periods. During same time interval, salinity increased by 0.1. Above OMZ, within central water layer, decreased too, but changed only slightly or even...
The aim of this paper is to analyze the limiting role crucible and coating impurities on material quality multicrystalline silicon. Both solid body diffusion into silicon melt are considered in study. Two ingots size G1 have been analyzed. One them was crystallized a standard crucible, whereas other quartz very high purity. Focus put iron cobalt as examples typical impurity species. Iron found large concentrations crucibles, proven be suitable marker that mainly coating. Inductively coupled...
Key Points The AMOC is a system of ocean currents that move heat and carbon around the planet predicted to decline in future has been directly measured since 2000s, but we now have observation systems place can verify We look at how these might develop consider they fit an optimized Atlantic observing
The tropical Atlantic is home to multiple coupled climate variations covering a wide range of timescales and impacting societally relevant phenomena such as continental rainfall, hurricane activity, oceanic biological productivity, atmospheric circulation in the equatorial Pacific. also connects southern northern branches meridional overturning receives freshwater input from some world's largest rivers. To address these diverse, unique, interconnected research challenges, rich network ocean...
Abstract Since the inception of international South Atlantic Meridional Overturning Circulation initiative in 21st century, substantial advances have been made observing and understanding Southern Hemisphere component (AMOC). Here we synthesize insights gained into overturning flows, interocean exchanges, water mass distributions pathways Atlantic. The circulation uniquely carries heat equatorward exports freshwater poleward consists two strong cells. Density pressure gradients, winds,...
In late austral summer 1991 a cyclonic thermocline eddy was detected in the subtropical western South Atlantic off Brazilian shelf near city of Vitória. This Vitória tracked for 55 days by surface drifters drogued at 100-m depth. The had been deployed boundary current regime FS Meteor as part basinwide study. analysis combined CTD/XBT section across eddy, together with drifter data and satellite images thermal structure revealed unexpected complexity region. interacted not only local...
An unusual "triple-dip" La Niña, described in Sidebar 3.1, had continuing, wide-spread ramifications for the state of ocean and climate 2022.Triple-dip Niñas are not unprecedented, but until now have always followed an extreme El Niño.Anomalously low sea-surface temperatures (SSTs) eastern tropical Pacific persisted from August 2020 through December 2022, with only a brief intermission May-July 2021.Strengthened easterly trade winds drove anomalously strong westward surface currents brought...
The circulation of the low-salinity Antarctic Intermediate Water in South Atlantic and associated dynamical processes are studied, using recent historical hydrographic profiles, Lagrangian Eulerian current measurements as well wind stress observations. pattern inferred for supports hypothesis an anticyclonic basinwide recirculation intermediate water subtropics. eastward anticyclone is fed mainly by recirculated Brazil Current Malvinas Current. An additional source region Polar Frontal zone...
Abstract The seasonal cycle of the mixed layer heat budget in northeastern tropical Atlantic (0°–25°N, 18°–28°W) is quantified using situ and satellite measurements together with atmospheric reanalysis products. This region characterized by pronounced latitudinal movements intertropical convergence zone (ITCZ) strong meridional variations terms budget. Three distinct regimes within are identified. trade wind (15°–25°N) experiences a annual content that driven approximately out-of-phase...
The flow of the low‐salinity Antarctic Intermediate Water (AAIW) at 700–1150 m depth across Rio Grande Rise and lower Santos Plateau is studied under auspices World Ocean Circulation Experiment (WOCE) in context Deep Basin Experiment. Our data set consists several hydrographic sections, a collection 15 RAFOS float trajectories, records from 14 moored current meters. were gathered during different intervals between 1990 1994. inferred field strongly supports basinwide anticyclonic...
This document does NOT address the issue of oxygen data quality control (either real-time or delayed mode). As a preliminary step towards that goal, this seeks to ensure all countries deploying floats equipped with sensors and metadata related these properly. We produced in response action item 14 from AST-10 meeting Hangzhou (March 22-23, 2009). Action 14: Denis Gilbert work Taiyo Kobayashi Virginie Thierry DACs are processing according recommendations. If recommendations contained herein...
Abstract A three‐dimensional velocity field constructed from Argo observations and sea surface heights (called SSH, hereinafter) is used to estimate meridional overturning volume transport heat (MHT) across 20°S, 25°S, 30°S, 35°S for the years 2000–2014 in South Atlantic. Volume upper branch of Meridional Overturning Circulation (MOC) MHT are consistent with previous observations, but higher than estimates derived three data assimilative ocean models, at some latitudes. Both models show...
Abstract. The Brazil Current transports from observations and the Hybrid Coordinate Model (HYCOM) model are analyzed to improve our understanding of current's structure variability. A time series observed transport is derived a three-dimensional field velocity in South Atlantic covering years 1993 2015 (hereinafter called Argo & SSH). mean increases 3.8 ± 2.2 Sv (1 106 m3 s−1) at 25∘ S 13.9 2.6 32∘ S, which corresponds slope 1.4 0.4 per degree. Transport estimates HYCOM fields...
We examine the hypothesis that Pliocene exhumation of external massifs in central Alps is controlled by climatic change. New thermochronological data from western Gastern‐Aar massif are used to investigate timing, extent, and reasons for Neogene exhumation. Our reveal was constant with 0.5 km/Ma over last 10 Ma north. In southern part, same order until ∼3.5 but then increased gradually toward south values up 1.2 km/Ma, resulting overall northward tilting Aar massif. explain this accelerated...
Abstract Argo is an internationally coordinated program directed at deploying and maintaining array of 3000 temperature salinity profiling floats on a global 3° latitude × longitude grid. are deployed from research vessels, merchant ships, aircraft. After launch they sink to prescribed pressure level (typically 1000–2000 dbar), where most remain for 10 days. The then return the surface, collecting profiles. At surface transmit data satellite again repeat cycle. As August 2006 there 2489...