Atmospheric gravity waves generated during a solar eclipse

Goodwin, G.L.; Hobson, G. J.

doi:10.1038/275109a0

Cited by 27 publications

(29 citation statements)

References 6 publications

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“…Among these observations, results are quite heterogeneous with 4-h-period waves of 10-15-Pa amplitude (Seykora et al 1985), 23-min-period waves of 0.1-0.2-Pa amplitude (Goodwin and Hobson 1978), and 9-12-min-period waves of 3-Pa amplitude (Farges et al 2003). The heterogeneity of these observations might be explained by the fact that the measurement campaigns were set up at different distances from the path of the total eclipse.…”

Section: Introductionmentioning

confidence: 60%

“…These inhomogeneities can produce local variations of the atmospheric cooling, which could generate smaller-scale waves compared to the dimension of the large-scale bow wave. Such inhomogeneities could be the source of the waves observed by Goodwin and Hobson (1978) or Farges et al (2003). Despite the inhomogeneity of the water vapor distribution, we can see that Eckermann et al (2007, their Fig.…”

Section: Modelingmentioning

confidence: 76%

“…Nevertheless, none of these detections can be clearly linked to any of the modeling proposed by either Chimonas (1970), Fritts andLuo (1993), or Eckermann et al (2007). The period of the waves observed by Goodwin and Hobson (1978) and Farges et al (2003) are for instance too short to have been produced by the global cooling of either the stratosphere or the troposphere. These waves could nevertheless result from the cooling of smaller-size absorption regions such as clouds or water vapor inhomogeneities.…”

Section: Introductionmentioning

confidence: 98%

“…The heterogeneity of these observations might be explained by the fact that the measurement campaigns were set up at different distances from the path of the total eclipse. The microbarograph network used by Seykora et al (1985) was deployed at several thousands of kilometers from the central line of the eclipse whereas those used by Goodwin and Hobson (1978) and Farges et al (2003) were only at a few hundreds of kilometers. Nevertheless, none of these detections can be clearly linked to any of the modeling proposed by either Chimonas (1970), Fritts andLuo (1993), or Eckermann et al (2007).…”

Section: Introductionmentioning

confidence: 99%

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Surface Pressure Fluctuations Produced by the Total Solar Eclipse of 1 August 2008

Marty

Dalaudier

Ponceau

et al. 2013

Journal of the Atmospheric Sciences

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During a solar eclipse, the moon's shadow progressively occults a part of Earth from the solar flux. This induces a cooling in the atmospheric layers that usually absorb the solar radiation. Since the eclipse shadow travels within the atmosphere at supersonic velocity, this cooling generates a planetary-scale bow wave of internal gravity waves. The purpose of this article is to estimate the surface atmospheric pressure fluctuations produced by the passage of the 1 August 2008 total solar eclipse and to compare these pressure fluctuations with those recorded by a temporary network of microbarographs and by the infrasound stations of the International Monitoring System. The surface pressure fluctuations expected at all the measurement sites are estimated using a linear spectral numerical model. It is shown that the cooling of both the ozonosphere and the troposphere can produce detectable pressure fluctuations at the ground surface but that the tropospheric cooling is likely to be the predominant source. Since the expected eclipse signals are in a frequency range that is highly perturbed by atmospheric tides and meteorological phenomena, the pressure fluctuations produced by these latter synoptic disturbances are characterized and removed from the recorded signals. Lowfrequency gravity waves starting just after the passage of the eclipse are then brought to light at most measurement sites. The time-frequency characteristics of these waves are similar to those obtained from the model, which strongly suggests that these waves were produced by the passage of the 1 August 2008 solar eclipse.

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Section: Introductionmentioning

confidence: 60%

Section: Modelingmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Surface Pressure Fluctuations Produced by the Total Solar Eclipse of 1 August 2008

Marty

Dalaudier

Ponceau

et al. 2013

Journal of the Atmospheric Sciences

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“…The pressure perturbations and induced gravity waves generated by a solar eclipse have been studied for several eclipse events (e.g. Schödel et al, 1973;Goodwin and Hobson, 1978;Seykora et al, 1985;Marty et al, 2013). Gravity wave forcing by a solar eclipse has also been found related to ozone photochemistry in the middle atmosphere (Fritts and Luo, 1993).…”

Section: Introductionmentioning

confidence: 99%

Surface radiation during the total solar eclipse over Ny-Ålesund, Svalbard, on 20 March 2015

Maturilli¹,

Ritter²

2016

Earth Syst. Sci. Data

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Abstract. On 20 March 2015, a total solar eclipse occurred over • N, 11.9 • E), Svalbard, in the high Arctic. It was the first time that the surface radiation components during the totality of a solar eclipse were measured by a Baseline Surface Radiation Network (BSRN) station. With the Ny-Ålesund long-term radiation data set as background (available at doi:10.1594/PANGAEA.150000), we present here the peculiarities of the radiation components and basic meteorology observed during the eclipse event. The supplementary data set contains the basic BSRN radiation and surface meteorological data in 1 min resolution for March 2015, and is available at doi:10.1594/PANGAEA.854326. The eclipse radiation data will be a useful auxiliary data set for further studies on micrometeorological surface-atmosphere exchange processes in the Svalbard environment, and may serve as a test case for radiative transfer studies.

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Atmospheric Internal Gravity Waves as a Source of Quasiperiodic Variations of the Cosmic Ray Secondary Component and their Likely Solar Origin

Galper¹,

Kirillov-Ugryumov²,

Leikov³

et al. 1983

Problems of Solar and Stellar Oscillations

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Atmospheric gravity waves generated during a solar eclipse

Cited by 27 publications

References 6 publications

Surface Pressure Fluctuations Produced by the Total Solar Eclipse of 1 August 2008

Surface Pressure Fluctuations Produced by the Total Solar Eclipse of 1 August 2008

Surface radiation during the total solar eclipse over Ny-Ålesund, Svalbard, on 20 March 2015

Atmospheric Internal Gravity Waves as a Source of Quasiperiodic Variations of the Cosmic Ray Secondary Component and their Likely Solar Origin

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