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University of New Hampshire

1997

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Assessment Of Shellfish Populations In The Great Bay Estuary, Richard Langan Dec 1997

Assessment Of Shellfish Populations In The Great Bay Estuary, Richard Langan

PREP Reports & Publications

No abstract provided.

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Sensitivity Of Spruce/Moss Boreal Forest Carbon Balance To Seasonal Anomalies In Weather, Steve Frolking Dec 1997

Sensitivity Of Spruce/Moss Boreal Forest Carbon Balance To Seasonal Anomalies In Weather, Steve Frolking

Earth Sciences

A process-oriented, daily time step model of a spruce/moss boreal ecosystem simulated 1994 and 1995 productivity for a Boreal Ecosystem-Atmosphere Study site near Thompson, Manitoba. Simulated black spruce net primary productivity (NPP) was 139 g C m−2 in 1994 and 112 in 1995; feathermoss NPP was 13.0 g C m−2 in 1994 and 9.7 in 1995; decomposition was 126 g C m−2 in 1994 and 130 in 1995; net ecosystem productivity (NEP) was an uptake of 26.3 g C m−2 in 1994 and 2.5 in 1995. A very dry period for the first half of the …

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Distributions Of Beryllium 7 And Lead 2109, And Soluble Aerosol-Associated Ionic Species Over The Western Pacific: Pem West B, February-March 1994, Jack E. Dibb, R. Talbot, Barry Lefer, Eric Scheuer, G L. Gregory, E V. Browell, J D. Bradshaw, S T. Sandholm, H B. Singh Dec 1997

Distributions Of Beryllium 7 And Lead 2109, And Soluble Aerosol-Associated Ionic Species Over The Western Pacific: Pem West B, February-March 1994, Jack E. Dibb, R. Talbot, Barry Lefer, Eric Scheuer, G L. Gregory, E V. Browell, J D. Bradshaw, S T. Sandholm, H B. Singh

Earth Sciences

Aerosol sampling for the determination of the concentrations of soluble ionic species and the natural radionuclides 7Be and 210Pb was conducted from the NASA DC-8 over the western Pacific as part of GTE/PEM-West B during February-March 1994. Concentrations of most soluble ionic species in the free troposphere were higher in samples collected on flights originating from Hong Kong and Japan than those collected further east over the open ocean. In both regions the measured concentrations were higher than those found during PEM-West A (fall 1991). Activities of 210Pb, a tracer of air masses influenced by sources on …

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Chemical Characteristics Of Continental Outflow From Asia To The Troposphere Over The Western Pacific Ocean During February-March 1994: Results From Pem-West B, R. Talbot, Jack E. Dibb, Barry Lefer, J D. Bradshaw, S T. Sandholm, D R. Blake, N J. Blake, G W. Sachse, J E. Collins Jr, B J. Heikes, J T. Merrill, G L. Gregory, B E. Anderson, H B. Singh, D C. Thornton, A R. Bandy, R F. Pueschel Dec 1997

Chemical Characteristics Of Continental Outflow From Asia To The Troposphere Over The Western Pacific Ocean During February-March 1994: Results From Pem-West B, R. Talbot, Jack E. Dibb, Barry Lefer, J D. Bradshaw, S T. Sandholm, D R. Blake, N J. Blake, G W. Sachse, J E. Collins Jr, B J. Heikes, J T. Merrill, G L. Gregory, B E. Anderson, H B. Singh, D C. Thornton, A R. Bandy, R F. Pueschel

Earth Sciences

We present here the chemical composition of outflow from the Asian continent to the atmosphere over the western Pacific basin during the Pacific Exploratory Mission-West (PEM-West B) in February–March 1994. Comprehensive measurements of important tropospheric trace gases and aerosol particulate matter were performed from the NASA DC-8 airborne laboratory. Backward 5 day isentropic trajectories were used to partition the outflow from two major source regions: continental north (>20°N) and continental south (<20°N). Air parcels that had not passed over continental areas for the previous 5 days were classified as originating from an aged marine source. The trajectories and the chemistry together indicated that there was extensive rapid outflow of air parcels at altitudes below 5 km, while aged marine air was rarely encountered and only at <20°N latitude. The outflow at low altitudes had enhancements in common industrial solvent vapors such as C2Cl4, CH3CCl3, and C6H6, intermixed with the combustion emission products C2H2, C …

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Comparisons Of Trace Constituents From Ground Stations And The Dc-8 Aircraft During Pem-West B, Richard Arimoto, R A. Duce, J M. Prospero, D L. Savoie, R. Talbot, Jack E. Dibb, B J. Heikes, B J. Ray, N F. Lewis, U Tomza Dec 1997

Comparisons Of Trace Constituents From Ground Stations And The Dc-8 Aircraft During Pem-West B, Richard Arimoto, R A. Duce, J M. Prospero, D L. Savoie, R. Talbot, Jack E. Dibb, B J. Heikes, B J. Ray, N F. Lewis, U Tomza

Earth Sciences

Chemical data from ground stations in Asia and the North Pacific are compared with data from the DC-8 aircraft collected during the Pacific Exploratory Measurements in the Western Pacific Ocean (PEM-West B) mission. Ground station sampling took place on Hong Kong, Taiwan, Okinawa, and Cheju; and at three Pacific islands, Shemya, Midway, and Oahu. Aircraft samples were collected during 19 flights, most over the western North Pacific. Aluminum was used as an indicator of mineral aerosol, and even though the aircraft did sample Asian dust, strong dust storms were not encountered. The frequency distribution for non-sea-salt sulfate (nss SO4 …

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Large-Scale Distributions Of Tropospheric Nitric, Formic, And Acetic Acids Over The Western Pacific Basin During Wintertime, R. Talbot, Jack E. Dibb, Barry Lefer, Eric Scheuer, J D. Bradshaw, S T. Sandholm, S Smyth, D R. Blake, N J. Blake, G W. Sachse, J E. Collins Jr, G L. Gregory Dec 1997

Large-Scale Distributions Of Tropospheric Nitric, Formic, And Acetic Acids Over The Western Pacific Basin During Wintertime, R. Talbot, Jack E. Dibb, Barry Lefer, Eric Scheuer, J D. Bradshaw, S T. Sandholm, S Smyth, D R. Blake, N J. Blake, G W. Sachse, J E. Collins Jr, G L. Gregory

Earth Sciences

We report here measurements of the acidic gases nitric (HNO3), formic (HCOOH), and acetic (CH3COOH) over the western Pacific basin during the February-March 1994 Pacific Exploratory Mission-West (PEM-West B). These data were obtained aboard the NASA DC-8 research aircraft as it flew missions in the altitude range of 0.3–12.5 km over equatorial regions near Guam and then further westward encompassing the entire Pacific Rim arc. Aged marine air over the equatorial Pacific generally exhibited mixing ratios of acidic gases <100 parts per trillion by volume (pptv). Near the Asian continent, discrete plumes encountered below 6 km altitude contained up to 8 parts per billion by volume (ppbv) HNO3 and 10 ppbv HCOOH and CH3COOH. Overall there was a general correlation between mixing …

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Transport Of Sulfur Dioxide From The Asian Pacific Rim To The North Pacific Troposphere, D C. Thornton, A R. Bandy, Byrin W. Blomquist, R. Talbot, Jack E. Dibb Dec 1997

Transport Of Sulfur Dioxide From The Asian Pacific Rim To The North Pacific Troposphere, D C. Thornton, A R. Bandy, Byrin W. Blomquist, R. Talbot, Jack E. Dibb

Earth Sciences

The NASA Pacific Exploratory Mission over the Western Pacific Ocean (PEM-West B) field experiment provided an opportunity to study sulfur dioxide (SO2) in the troposphere over the western Pacific Ocean from the tropics to 60°N during February–March 1993. The large suite of chemical and physical measurements yielded a complex matrix in which to understand the distribution of sulfur dioxide over the western Pacific region. In contrast to the late summer period of Pacific Exploratory Mission-West A (PEM-West A) (1991) over this same area, SO2showed little increase with altitude, and concentrations were much lower in the free …

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Global Energetic Neutral Atom (Ena) Measurements And Their Association With The Dst Index, A. M. Jorgensen, Harlan E. Spence, M. G. Henderson, G. D. Reeves, M. Sugiura, T. Kamei Dec 1997

Global Energetic Neutral Atom (Ena) Measurements And Their Association With The Dst Index, A. M. Jorgensen, Harlan E. Spence, M. G. Henderson, G. D. Reeves, M. Sugiura, T. Kamei

Physics & Astronomy

We present a new global magnetospheric index that measures the intensity of the Earth's ring current through energetic neutral atoms (ENAs). We have named it the Global Energetic Neutral Index (GENI), and it is derived from ENA measurements obtained by the Imaging Proton Spectrometer (IPS), part of the Comprehensive Energetic Particle and Pitch Angle Distribution (CEPPAD) experiment on the POLAR satellite. GENI provides a simple orbit-independent global sum of ENAs measured with IPS. Actual ENA measurements for the same magnetospheric state look different when seen from different points in the POLAR orbit. In addition, the instrument is sensitive …

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The New Hampshire, Vol. 88, No. 25 (Dec. 12, 1997), The New Hampshire Dec 1997

The New Hampshire, Vol. 88, No. 25 (Dec. 12, 1997), The New Hampshire

The New Hampshire Print Edition

The student publication of the University of New Hampshire.

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The New Hampshire, Vol. 88, No. 24 (Dec. 9, 1997), The New Hampshire Dec 1997

The New Hampshire, Vol. 88, No. 24 (Dec. 9, 1997), The New Hampshire

The New Hampshire Print Edition

The student publication of the University of New Hampshire.

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Faculty Senate Meeting With Governor - December 8, 1997, Faculty Senate Dec 1997

Faculty Senate Meeting With Governor - December 8, 1997, Faculty Senate

Faculty Senate Agendas & Minutes

No abstract provided.

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Faculty Senate Meeting With Governor - December 8, 1997, Faculty Senate Dec 1997

Faculty Senate Meeting With Governor - December 8, 1997, Faculty Senate

Faculty Senate Agendas & Minutes

No abstract provided.

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The New Hampshire, Vol. 88, No. 23 (Dec. 5, 1997), The New Hampshire Dec 1997

The New Hampshire, Vol. 88, No. 23 (Dec. 5, 1997), The New Hampshire

The New Hampshire Print Edition

The student publication of the University of New Hampshire.

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Layout For Visualizing Large Software Structures In 3d, Colin Ware, Glenn Franck, Monica Parkhi, Tim Dudley Dec 1997

Layout For Visualizing Large Software Structures In 3d, Colin Ware, Glenn Franck, Monica Parkhi, Tim Dudley

Center for Coastal and Ocean Mapping

There is increasing evidence that 3D visualization of complex structures has advantages over 2D visualization. While nested directed graphs are an important method of representing information in 2D or 3D, they must be effectively organized in order to be understood. Most work on graph layout has assumed that fully automatic layout is desirable. Through our work with graphs representing large software structures, we have found that, due to the importance of the semantic content, it is necessary to combine automatic layout with manual layout. This paper describes a system called GraphVisualizer3D, which was designed to help people understand large nested …

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American Square Dance Vol. 52, No. 11 (Dec. 1997), Juiare, Ed, Juiare, Pat Dec 1997

American Square Dance Vol. 52, No. 11 (Dec. 1997), Juiare, Ed, Juiare, Pat

American Squares

Monthly square dance magazine that began publication in 1945.

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Assessment Of The Record Of The 1982 El Chichón Eruption As Preserved In Greenland Snow, Gregory A. Zielinski, Jack E. Dibb, Qinzhao Yang, Paul A. Mayewski, Sallie I. Whitlow, Mark S. Twickler, Mark S. Germani Dec 1997

Assessment Of The Record Of The 1982 El Chichón Eruption As Preserved In Greenland Snow, Gregory A. Zielinski, Jack E. Dibb, Qinzhao Yang, Paul A. Mayewski, Sallie I. Whitlow, Mark S. Twickler, Mark S. Germani

Earth Sciences

Variability in the SO4 2- and Cl- time series for the 1980s from 12 shallow snow pits across the Greenland ice sheet is used to evaluate the record of the 1982 El Chichón eruption and the potential for recording a moderate northern equatorial eruption in a single Greenland ice core. Composition of volcanic glass found in spring 1983 snow in one of the pits in the Summit region matches that from El Chichón glass, thereby verifying the deposition of material from the eruption. High Na+ and Cl- concentrations in this same layer probably represent deposition of the reaction products of …

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Temporal And Spatial Variability Of Snow Accumulation In Central Greenland, H Kuhns, C Davidson, Jack E. Dibb, C Stearns, M H. Bergin, J L. Jaffrezo Dec 1997

Temporal And Spatial Variability Of Snow Accumulation In Central Greenland, H Kuhns, C Davidson, Jack E. Dibb, C Stearns, M H. Bergin, J L. Jaffrezo

Earth Sciences

Snow accumulation records from central Greenland are explored to improve the understanding of the accumulation signal in Greenland ice core records. Results from a “forest” of 100 bamboo poles and automated accumulation monitors in the vicinity of Summit as well as shallow cores collected in the Summit and Crete areas are presented. Based on these accumulation data, a regression has been calculated to quantify the signal-to-noise variance ratio of ice core accumulation signals on a variety of temporal (1 week to 2 years) and spatial (20 m to 200 km) scales. Results are consistent with data obtained from year-round automated …

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Air-Snow Exchange Investigations At Summit, Greenland: An Overview, Jack E. Dibb, J L. Jaffrezo Nov 1997

Air-Snow Exchange Investigations At Summit, Greenland: An Overview, Jack E. Dibb, J L. Jaffrezo

Earth Sciences

The Greenland Ice Sheet Project 2 (GISP2) and Greenland Ice Core Project (GRIP) deep drilling programs at Summit, Greenland included support (both logistical and scientific) of extensive investigation of atmospheric transport and air-snow exchange processes of gases and particles relevant to the interpretation of the ice-core records. Much of the sampling for the air-snow exchange investigations was conducted at a unique solar-powered camp 30 km southwest of the GISP2 drill camp (even further from the GRIP camp) and was characterized by a high degree of international collaboration and cooperation. The wide range of expertise and analytical capabilities of the 20-plus …

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A 110,000‐Year History Of Change In Continental Biogenic Emissions And Related Atmospheric Circulation Inferred From The Greenland Ice Sheet Project Ice Core, L. David Meeker, Paul A. Mayewski, Mark S. Twickler, Sallie I. Whitlow, Debra A. Meese Nov 1997

A 110,000‐Year History Of Change In Continental Biogenic Emissions And Related Atmospheric Circulation Inferred From The Greenland Ice Sheet Project Ice Core, L. David Meeker, Paul A. Mayewski, Mark S. Twickler, Sallie I. Whitlow, Debra A. Meese

Faculty Publications

The 110,000‐year record of ammonium concentrations from the Greenland Ice Sheet Project 2 (GISP2) ice core provides the basis for an analysis of terrestrial biological production and atmospheric circulation patterns involved in the transport of biologically produced ammonium to the Greenland atmosphere. The directly measured concentration series was selected for analysis, rather than that of estimated ammonium flux, after a detailed analysis of the relationship among ice core glaciochemical concentrations and a high‐resolution simultaneous record of snow accumulation from the GISP2 core. Analysis of the ammonium concentration series shows that maxima in background levels of ammonium in the Greenland atmosphere …

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Major Features And Forcing Of High‐Latitude Northern Hemisphere Atmospheric Circulation Using A 110,000‐Year‐Long Glaciochemical Series, Paul A. Mayewski, L. David Meeker, Mark S. Twickler, Sallie I. Whitlow, Qinzhao Yang, W. Berry Lyons, Michael Prentice Nov 1997

Major Features And Forcing Of High‐Latitude Northern Hemisphere Atmospheric Circulation Using A 110,000‐Year‐Long Glaciochemical Series, Paul A. Mayewski, L. David Meeker, Mark S. Twickler, Sallie I. Whitlow, Qinzhao Yang, W. Berry Lyons, Michael Prentice

Faculty Publications

The Greenland Ice Sheet Project 2 glaciochemical series (sodium, potassium, ammonium, calcium, magnesium, sulfate, nitrate, and chloride) provides a unique view of the chemistry of the atmosphere and the history of atmospheric circulation over both the high latitudes and mid‐low latitudes of the northern hemisphere. Interpretation of this record reveals a diverse array of environmental signatures that include the documentation of anthropogenically derived pollutants, volcanic and biomass burning events, storminess over marine surfaces, continental aridity and biogenic source strength plus information related to the controls on both high‐ and low‐frequency climate events of the last 110,000 years. Climate forcings investigated …

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Volcanic Aerosol Records And Tephrochronology Of The Summit, Greenland, Ice Cores, Gregory A. Zielinski, Paul A. Mayewski, L. David Meeker, Karl Gronvold, Mark S. Germani, Sallie I. Whitlow, Mark S. Twickler, Kendrick C. Taylor Nov 1997

Volcanic Aerosol Records And Tephrochronology Of The Summit, Greenland, Ice Cores, Gregory A. Zielinski, Paul A. Mayewski, L. David Meeker, Karl Gronvold, Mark S. Germani, Sallie I. Whitlow, Mark S. Twickler, Kendrick C. Taylor

Faculty Publications

The recently collected Greenland Ice Sheet Project 2 (GISP2) and Greenland Ice Core Project ice cores from Summit, Greenland, provide lengthy and highly resolved records of the deposition of both the aerosol (H2SO4) and silicate (tephra) components of past volcanism. Both types of data are very beneficial in developing the hemispheric to global chronology of explosive volcanism and evaluating the entire volcanism‐climate system. The continuous time series of volcanic SO42− for the last 110,000 years show a strong relationship between periods of increased volcanism and periods of climatic change. The greatest number of volcanic SO42− signals, many of very high …

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The New Hampshire, Vol. 88, No. 22 (Nov. 25, 1997), The New Hampshire Nov 1997

The New Hampshire, Vol. 88, No. 22 (Nov. 25, 1997), The New Hampshire

The New Hampshire Print Edition

The student publication of the University of New Hampshire.

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Faculty Senate - 24 November 1997 Minutes Summary, Faculty Senate Nov 1997

Faculty Senate - 24 November 1997 Minutes Summary, Faculty Senate

Faculty Senate Agendas & Minutes

No abstract provided.

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Faculty Senate - 24 November 1997 Minutes Summary, Faculty Senate Nov 1997

Faculty Senate - 24 November 1997 Minutes Summary, Faculty Senate

Faculty Senate Agendas & Minutes

No abstract provided.

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The New Hampshire, Vol. 88, No. 21 (Nov. 21, 1997), The New Hampshire Nov 1997

The New Hampshire, Vol. 88, No. 21 (Nov. 21, 1997), The New Hampshire

The New Hampshire Print Edition

The student publication of the University of New Hampshire.

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The New Hampshire, Vol. 88, No. 20 (Nov. 18, 1997), The New Hampshire Nov 1997

The New Hampshire, Vol. 88, No. 20 (Nov. 18, 1997), The New Hampshire

The New Hampshire Print Edition

The student publication of the University of New Hampshire.

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The New Hampshire, Vol. 88, No. 19 (Nov. 14, 1997), The New Hampshire Nov 1997

The New Hampshire, Vol. 88, No. 19 (Nov. 14, 1997), The New Hampshire

The New Hampshire Print Edition

The student publication of the University of New Hampshire.

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The New Hampshire, Vol. 88, No. 18 (Nov. 11, 1997), The New Hampshire Nov 1997

The New Hampshire, Vol. 88, No. 18 (Nov. 11, 1997), The New Hampshire

The New Hampshire Print Edition

The student publication of the University of New Hampshire.

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Faculty Senate Motion Ii-M4 On Articulation Agreements, Faculty Senate Nov 1997

Faculty Senate Motion Ii-M4 On Articulation Agreements, Faculty Senate

Faculty Senate Motions

No abstract provided.

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Faculty Senate - 10 November 1997 Minutes Summary, Faculty Senate Nov 1997

Faculty Senate - 10 November 1997 Minutes Summary, Faculty Senate

Faculty Senate Agendas & Minutes

No abstract provided.

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