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Title: ARM Value-Added Product (VAP) Monthly Status Report (March 2007)

Abstract

The original temporal resolution of the Atmospheric Radiation Measurement (ARM) AERI instruments was 8 minutes, where each cycle consisted of a 3-minute sky-view period and 2-minute views at each of the two blackbody targets. This sampling strategy was chosen to achieve the desired signal-to-noise ratio for clear-sky spectroscopy and profiling studies. To make the AERI observations more useful for cloud research, the temporal resolution has been decreased by an order of magnitude; however, this greatly increases the random error in these observations. This VAP uses a principle component analysis noise filter to significantly reduce the amount of uncorrelated random error in the AERI observations. The noise-filtered 'rapid-sample' AERI observations have approximately the same amount of random error as the original AERI radiance data. The AEROSOL BE VAP provides temporally and spatially continuous vertical profiles of ambient aerosol optical properties including scattering, absorption, and extinction coefficients, single scattering albedo and asymmetry parameter. It uses a combination of passive radiometers, in-situ surface measurements, empirical relationships, climatologies, and model input. It is a direct input to the BBHRP VAP, an ACRF programmatic metric.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
DOE Office of Science Atmospheric Radiation Measurement (ARM) Program (United States)
Sponsoring Org.:
USDOE Office of Environmental Management (EM), Acquisition and Project Management (EM-50)
OSTI Identifier:
1021007
Report Number(s):
DOE/SC-ARM/P-07-005.1
PNNL-17087; TRN: US201120%%406
DOE Contract Number:
DE-AC05-7601830
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ABSORPTION; AEROSOLS; ALBEDO; ASYMMETRY; CLOUDS; OPTICAL PROPERTIES; RADIATIONS; RADIOMETERS; RESOLUTION; SAMPLING; SCATTERING; SIGNAL-TO-NOISE RATIO; SPECTROSCOPY; TARGETS

Citation Formats

Comstock, J, Flynn, C, Jensen, M, Long, C, Turner, D, and Xie, S. ARM Value-Added Product (VAP) Monthly Status Report (March 2007). United States: N. p., 2007. Web. doi:10.2172/1021007.
Comstock, J, Flynn, C, Jensen, M, Long, C, Turner, D, & Xie, S. ARM Value-Added Product (VAP) Monthly Status Report (March 2007). United States. doi:10.2172/1021007.
Comstock, J, Flynn, C, Jensen, M, Long, C, Turner, D, and Xie, S. Thu . "ARM Value-Added Product (VAP) Monthly Status Report (March 2007)". United States. doi:10.2172/1021007. https://www.osti.gov/servlets/purl/1021007.
@article{osti_1021007,
title = {ARM Value-Added Product (VAP) Monthly Status Report (March 2007)},
author = {Comstock, J and Flynn, C and Jensen, M and Long, C and Turner, D and Xie, S},
abstractNote = {The original temporal resolution of the Atmospheric Radiation Measurement (ARM) AERI instruments was 8 minutes, where each cycle consisted of a 3-minute sky-view period and 2-minute views at each of the two blackbody targets. This sampling strategy was chosen to achieve the desired signal-to-noise ratio for clear-sky spectroscopy and profiling studies. To make the AERI observations more useful for cloud research, the temporal resolution has been decreased by an order of magnitude; however, this greatly increases the random error in these observations. This VAP uses a principle component analysis noise filter to significantly reduce the amount of uncorrelated random error in the AERI observations. The noise-filtered 'rapid-sample' AERI observations have approximately the same amount of random error as the original AERI radiance data. The AEROSOL BE VAP provides temporally and spatially continuous vertical profiles of ambient aerosol optical properties including scattering, absorption, and extinction coefficients, single scattering albedo and asymmetry parameter. It uses a combination of passive radiometers, in-situ surface measurements, empirical relationships, climatologies, and model input. It is a direct input to the BBHRP VAP, an ACRF programmatic metric.},
doi = {10.2172/1021007},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}

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