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Robert J. Zamora, F. Martin Ralph, Edward Clark, and Timothy Schneider

developed and used by soil physicists in their research and by the agricultural industry to maximize the benefits of irrigation. Understanding the role of soil water physics on both hydrological forecasts of river flows and meteorological forecasts of precipitation and planetary boundary layer development has been hindered by the lack of affordable and reliable soil water observational technology. In the last 10 years inexpensive and reliable soil moisture measuring instrumentation has become

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P. K. Govind

1512 JOURNAL OF APPLIED METEOROLOGY VOLVM~ItDropwindsonde Instrumentation for Weather Reconnaissance Aircraft P. K. Govn~nNational Cent~ for Atmosplwric Research,~ Boulder, Colo. 80303(Manuscript received 6 Jmluary 1975, in revised form 28 July 1975)ABSTRACT A windfinding dropsonde instrumentation system is described, with examples of its operational use in theGARP Atlantic

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Uwe Send, Lloyd Regier, and Brent Jones

adversely affect the energy budget and reduce the endurance of the mission. We have not tried this approach as the current glider buoyancy engine is optimized for operation at 1500-m depth and is extremely inefficient near the surface. e. Mooring implementation A mooring controller has been developed based on the CF2 microcomputer manufactured by Persistor Instrumentation. Via an inductive modem, the Seabird IMM, the controller uses the mooring wire to collect data from and control the sensors attached

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G. A. Herbert, E. R. Green, J. M. Harris, G. L. Koenig, S. J. Roughton, and K. W. Thaut

414 JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY VOLUME3Control and Monitoring Instrumentation for the Continuous Measurement of Atmospheric CO2 and Meteorological Variables G. A. HERBERTNO321/ERLI~4ir Resources Laboratory, Boulder, CO 80303 E. R. GREEN*CIRE$, University of Colorado, Boulder, CO 80309J. M. HARMS, G. L. KOENIG, S. J. ROUGHTON AND K. W. THAUT NOA

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Marshall Swartz, Daniel J. Torres, Steve Liberatore, and Robert Millard

1. Background Since the first use of conducting wire to telemeter data from instruments lowered from ships, users have faced significant constraints in both data speed and maximum achievable distance. Seemingly a technology plateau was reached, because for over three decades, various telemetry schemes achieved less than 10 kbit s −1 data rates over 10-km-long single- or three-conductor cables developed for oil drilling instrumentation and control applications. In the United States, the

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Hans van Haren, Martin Laan, Sander Asjes, and Bas Denissen

1. Introduction Ocean researchers who regularly deploy stand-alone subsurface instrumentation in the deep sea may have experienced difficulties in retrieving their precious scientific materials and archived data. Normally, such instrumented lines or landers are equipped with one or two devices to release one or more “anchor” weights acoustically from a deck unit on board a ship. In some occasions when the anchor weight has to be retrieved, a pop-up buoy is released instead of the entire

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Samuel R. Laney

given sensor or instrument is polled, configured, or driven within a larger observing network. The challenges that this increased sophistication in sensors and instruments adds to typical integration scenarios may be relatively minor in large-scale observational programs that enjoy substantial technical support. Yet for individual researchers or smaller groups that lack access to appropriate instrumentation expertise, this increased sophistication can impact and in some cases may limit the types of

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Patrick Minnis, Patrick W. Heck, David F. Young, C. W. Fairall, and J. B. Snider

VOLUME31 JOURNAL OF APPLIED METEOROLOGY APRIL 1992Stratocumulus Cloud Properties Derived from Simultaneous Satellite and Island-based Instrumentation during FIRE PATRICK MINNISAtmospheric Sciences Division, NASA Langley Research Center, Hampton, Virginia PATRICK W. HECK AND DAVID F. YOUNGLockheed Engineering and Sciences Company, Hampton, Virginia C. W. FAIRALL AND J. B. SNIDER NOAA

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Arlin B. Super, Bruce A. Boe, Edmond W. Holroyd III, and James A. Heimbach Jr.

)ABSTRACT A series ofwinter orographic cloud seeding experiments is described in which the seeding agent and associatedchanges in cloud microphysics are monitored to within 300 m of the target areas (Montana and Colorado),and at the surface (Colorado only). This, the first paper in a three-part series, discusses the underlying physicalhypothesis and experimental approach, and describes in detail the instrumentation used. The results of thephysical evaluations, presented in Parts II and III, show that

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Richard H. Thuillier

AUGUST 1995 THUILLIER 1815The Influence of Instrumentation, Siting, Exposure Height, and Temporal AveragingMethodology on Meteorological Measurements from SJVAQS/AUSPEX RICHARD H. THUILLIERPacific Gas and Electric Company, San Ramon, California(Manuscript received I February 1994, in final form 2 August 1994) ABSTRACT When designing field

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