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Analyzing signatures of aerosol-cloud interactions from satelliteretrievals and the GISS GCM to constrain the aerosol indirecteffect

Description: Evidence of aerosol-cloud interactions are evaluated using satellite data from MODIS, CERES, AMSR-E, reanalysis data from NCEP and data from the NASA Goddard Institute for Space Studies climate model. We evaluate a series of model simulations: (1) Exp N- aerosol direct radiative effects; (2) Exp C- Like Exp N but with aerosol effects on liquid-phase cumulus and stratus clouds; (3) Exp CN- Like Exp C but with model wind fields nudged to reanalysis data. Comparison between satellite-retrieved dat… more
Date: October 1, 2007
Creator: Menon, S.; Del Genio, A.D.; Kaufman, Y.; Bennartz, R.; Koch, D.; Loeb, N. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Application of Bomb Radiocarbon Chronologies to Shortfin Mako (Isurus oxyrinchus)

Description: There is an ongoing disagreement regarding the aging of the shortfin mako due to a difference of interpretation in the periodic deposition of vertebral growth band pairs, especially for the larger size classes. Using analysis of length-month information, tagging data, and length-frequency analysis, concluded that two band pairs were formed in the vertebral centrum every year (biannual band-pair interpretation). Cailliet et al. (1983), however, presented growth parameters based on the common ass… more
Date: July 16, 2007
Creator: Ardizzone, D; Cailliet, G M; Natanson, L J; Andrews, A H; Kerr, L A & Brown, T A
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Radiocarbon evidence for annual growth rings in a deep sea octocoral (Primnoa resedaeformis)

Description: The deep-sea gorgonian octocoral Primnoa resedaeformis is distributed throughout the Atlantic and Pacific Oceans at depths of 65-3200 m. It has a two-part skeleton of calcite and gorgonin. Towards the inside of the axial skeleton gorgonin and calcite are deposited in concentric growth rings, similar to tree rings. Colonies were collected from the Northeast Channel (northwest Atlantic Ocean, southwest of Nova Scotia, Canada) from depths of 250-475 m. Radiocarbon was measured in individual rings … more
Date: April 5, 2005
Creator: Sherwood, O. A.; Scott, D. B.; Risk, M. J. & Guilderson, T. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Compendium of Avian Occurrence Information for the Continental Shelf Waters along the Atlantic Coast of the United States: Final Report (Database Section-Seabirds)

Description: This study follows the regulatory requirements by the MMS and FWS in assessing the construction of building and wind turbines effects on marine bird populations.
Date: July 2009
Creator: O'Connell, Allan; Gardner, Beth; Gilbert, Andrew & Laurent, Kevin
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Hesperides Cruise in the Atlantic Ocean

Description: This data documentation discusses the procedures and methods used to measure total carbon dioxide (TCO{sub 2}), total alkalinity (TALK), and pH at hydrographic stations during the R/V Hesperides oceanographic cruise in the Atlantic Ocean (Section A5). Conducted as part of the Work Ocean Circulation Experiment (WOCE), the cruise began in Cadiz, Spain, on July 14, 1992, and ended in Miami, Florida, on August 15, 1992. Measurements made along WOCE Section A5 included CTD pressure, temperature, sal… more
Date: June 9, 2000
Creator: Millero, F.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Meteor Cruise 28/1 in the South Atlantic Ocean (WOCE Section A8, March 29 - May 12, 1994)

Description: This data documentation discusses the procedures and methods used to measure total carbon dioxide (TCO{sub 2}) and the fugacity of CO{sub 2} (fCO{sub 2}) at hydrographic stations during the R/V Meteor oceanographic cruise 28/1 in the South Atlantic Ocean (Section A8). Conducted as part of the World Ocean Circulation Experiment (WOCE), the cruise began in Recife, Brazil, on March 29, 1994, and ended after 35 days at sea in Walvis Bay, Namibia, on May 12, 1994. Instructions for accessing the data… more
Date: May 9, 2002
Creator: Kozyr, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparison of Inorganic Carbon System Parameters Measured in the Atlantic Ocean from 1990 to 1998 and Recommended Adjustments

Description: As part of the global synthesis effort sponsored by the Global Carbon Cycle project of the National Oceanic and Atmospheric Administration (NOAA) and U.S. Department of Energy, a comprehensive comparison was performed of inorganic carbon parameters measured on oceanographic surveys carried out under auspices of the Joint Global Ocean Flux Study and related programs. Many of the cruises were performed as part of the World Hydrographic Program of the World Ocean Circulation Experiment and the NOA… more
Date: May 21, 2003
Creator: Wanninkhof, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of MTI Water Temperature Thermal Discharge Retrievals with Ground Truth

Description: Surface water temperatures calculated from Multispectral Thermal Imager (MTI) brightness temperatures and the robust retrieval algorithm, developed by the Los Alamos National Laboratory (LANL), are compared with ground truth measurements at a mid-latitude cold-water site along the Atlantic coast near Plymouth, MA. In contrast to the relative uniformity of the sea-surface temperature in the open ocean the water temperature near Pilgrim exhibits strong spatial gradients and temporal variability. … more
Date: December 6, 2002
Creator: Kurzeja, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Calibration of Hydrophone Stations: Lessons Learned from the Ascension Island Experiment

Description: Calibration of hydroacoustic stations for nuclear explosion monitoring is important for increasing monitoring capability and confidence from newly installed stations and from existing stations. Calibration of hydroacoustic stations is herein defined as the near-field precision location of the hydrophones and determination of the amplitude response; and the regional-scale calibration of acoustic traveltimes, bathymetric shadowing, diffraction, and reflection as recorded at a particular station. … more
Date: July 11, 2000
Creator: Harben, P E & Rodgers, A J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Knorr Cruises in the North Atlantic Ocean on WOCE Sections AR24 (November 2-December 5, 1996) and A24, A20, and A22 (May 30-September 3, 1997)

Description: This documentation describes the procedures and methods used to measure total carbon dioxide (TCO{sub 2}) total alkalinity (TALK), and partial pressure of CO{sub 2} (pCO{sub 2}) at hydrographic stations on the North Atlantic Ocean sections AR24, A24, A20, and A22 during the R/V Knorr Cruises 147-2, 151-2, 151-3, and 151-4 in 1996 and 1997. Conducted as part of the World Ocean Circulation Experiment (WOCE), the expeditions began at Woods Hole, Massachusetts, on October 24, 1996, and ended at Woo… more
Date: October 23, 2003
Creator: Johnson, K.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Neutralizing Carbonic Acid in Deep Carbonate Strata below the North Atlantic Annual Technical Report: 2005

Description: Our research is aimed at investigating several technical issues associated with carbon dioxide sequestration in calcium carbonate sediments below the sea floor through laboratory experiments and chemical transport modeling. Our goal is to evaluate the basic feasibility of this approach, including an assessment of optimal depths, sediment types, and other issues related to site selection. Through laboratory and modeling efforts, we are studying the flow of liquid carbon dioxide and carbon dioxid… more
Date: December 1, 2005
Creator: Schrag, Daniel P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The influence of cut off lows on sulfate burdens over the North Atlantic during April, 1987

Description: The authors have presented examples from a modeling study of the development of sulfur burdens over North America, the North Atlantic Ocean and Europe during April, 1987 using observation-derived meteorological data to represent the actual conditions for this period, focusing on the influence of cut-off lows on SO{sub 2} and sulfate column burdens over the North Atlantic Ocean. The analysis demonstrates that these systems can serve either as sources or sinks of sulfate, and that the major facto… more
Date: January 14, 2001
Creator: Benkovitz, C. M.; Miller, M. A.; Schwartz, S. E. & Kwon, O. U.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Organic carbon burial in the Cape Hatteras ocean margins. Relationships with mineral surfaces

Description: This project examined controls on organic carbon preservation in ocean margin sediments around Cape Hatteras, USA. Grain size variation explained most variance in sedimentary organic carbon concentrations. Normalizing to grain surface areas allowed identification of areas of particularly high organic matter loading - i.e., the upper slope regions. Spatial variations in concentrations are influenced by redistribution of organoclay aggregates. This region has higher grain size-normalized organic … more
Date: February 10, 2000
Creator: Mayer, Lawrence M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of primary production and optical variability in shelf and slope waters near Cape Hatteras, North Carolina. Final project report

Description: In this project we determined primary production and optical variability in the shelf and slope waters off of Cape Hatteras, N.C. These processes were addressed in conjunction with other Ocean Margins Program investigators, during the Spring Transition period and during Summer. We found that there were significant differences in measured parameters between Spring and Summer, enabling us to develop seasonally specific carbon production and ecosystem models as well as seasonal and regional algori… more
Date: February 12, 2001
Creator: Redalje, Donald G. & Lohrenz, Stevern E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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