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Title: The Atmospheric and Terrestrial Mobile Laboratory (ATML).

Abstract

The ionospheric disturbance dynamo signature in geomagnetic variations is investigated using the National Center for Atmospheric Research Thermosphere-Ionosphere-Electrodynamics General Circulation Model. The model results are tested against reference magnetically quiet time observations on 21 June 1993, and disturbance effects were observed on 11 June 1993. The model qualitatively reproduces the observed diurnal and latitude variations of the geomagnetic horizontal intensity and declination for the reference quiet day in midlatitude and low-latitude regions but underestimates their amplitudes. The patterns of the disturbance dynamo signature and its source 'anti-Sq' current system are well reproduced in the Northern Hemisphere. However, the model significantly underestimates the amplitude of disturbance dynamo effects when compared with observations. Furthermore, the largest simulated disturbances occur at different local times than the observations. The discrepancies suggest that the assumed high-latitude storm time energy inputs in the model were not quantitatively accurate for this storm.

Authors:
;  [1];  [1]; ;  [1];  [1];  [1];  [1]; ;  [2]; ;  [1];  [1]; ;
  1. (Los Alamos National Laboratory)
  2. (Lawrence Livermore National Laboratory)
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
992303
Report Number(s):
SAND2010-2148C
Journal ID: ISSN 0148-0227; TRN: US201022%%274
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Journal Volume: 115; Journal Issue: a11; Conference: Proposed for presentation at the NOAA/ESRL Global Monitoring Annual Conference held May 18-19, 2010 in Boulder, CO.
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AMPLITUDES; DISTURBANCES; GENERAL CIRCULATION MODELS; MONITORING; NORTHERN HEMISPHERE; STORMS

Citation Formats

Zak, Bernard Daniel, Rahn, Thom, Nitschke, Kim, Ivey, Mark D., Mora, Claudia, McDowell, Nate, Love, Steve, Dubey, M., Michelsen, Hope A., Guilderson, Tom, Schubert, William Kent, Costigan, Keeley, Chylek, Petr, Bambha, Ray P., and Roskovensky, John K. The Atmospheric and Terrestrial Mobile Laboratory (ATML).. United States: N. p., 2010. Web. doi:10.1029/2010JA015417.
Zak, Bernard Daniel, Rahn, Thom, Nitschke, Kim, Ivey, Mark D., Mora, Claudia, McDowell, Nate, Love, Steve, Dubey, M., Michelsen, Hope A., Guilderson, Tom, Schubert, William Kent, Costigan, Keeley, Chylek, Petr, Bambha, Ray P., & Roskovensky, John K. The Atmospheric and Terrestrial Mobile Laboratory (ATML).. United States. doi:10.1029/2010JA015417.
Zak, Bernard Daniel, Rahn, Thom, Nitschke, Kim, Ivey, Mark D., Mora, Claudia, McDowell, Nate, Love, Steve, Dubey, M., Michelsen, Hope A., Guilderson, Tom, Schubert, William Kent, Costigan, Keeley, Chylek, Petr, Bambha, Ray P., and Roskovensky, John K. Thu . "The Atmospheric and Terrestrial Mobile Laboratory (ATML).". United States. doi:10.1029/2010JA015417.
@article{osti_992303,
title = {The Atmospheric and Terrestrial Mobile Laboratory (ATML).},
author = {Zak, Bernard Daniel and Rahn, Thom and Nitschke, Kim and Ivey, Mark D. and Mora, Claudia and McDowell, Nate and Love, Steve and Dubey, M. and Michelsen, Hope A. and Guilderson, Tom and Schubert, William Kent and Costigan, Keeley and Chylek, Petr and Bambha, Ray P. and Roskovensky, John K.},
abstractNote = {The ionospheric disturbance dynamo signature in geomagnetic variations is investigated using the National Center for Atmospheric Research Thermosphere-Ionosphere-Electrodynamics General Circulation Model. The model results are tested against reference magnetically quiet time observations on 21 June 1993, and disturbance effects were observed on 11 June 1993. The model qualitatively reproduces the observed diurnal and latitude variations of the geomagnetic horizontal intensity and declination for the reference quiet day in midlatitude and low-latitude regions but underestimates their amplitudes. The patterns of the disturbance dynamo signature and its source 'anti-Sq' current system are well reproduced in the Northern Hemisphere. However, the model significantly underestimates the amplitude of disturbance dynamo effects when compared with observations. Furthermore, the largest simulated disturbances occur at different local times than the observations. The discrepancies suggest that the assumed high-latitude storm time energy inputs in the model were not quantitatively accurate for this storm.},
doi = {10.1029/2010JA015417},
journal = {},
number = a11,
volume = 115,
place = {United States},
year = {Thu Apr 01 00:00:00 EDT 2010},
month = {Thu Apr 01 00:00:00 EDT 2010}
}

Conference:
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