Abstract
We present observations of the F-region ionosphere over Arecibo, Puerto Rico (18.34N, 66.75W), during the January-February 2008 and January-February 2009 sudden stratospheric warming (SSW) events. For the first period (2008), we have used incoherent scatter radar (ISR) electron density and temperature measurements from the Arecibo Observatory (AO), as well as relative total electron content (TEC) derived from a dual-frequency GPS receiver. For the second event (2009), during which we observed the largest recorded stratospheric warming, we have used the relative GPS TEC. Our analysis indicates that the ionosphere over Arecibo exhibits perturbations after the SSW, the effects are most visible during the daytime. The strongest signatures are observed in the TEC measurements, represented by large enhancements (with respect to non SSW days), particularly during daytime hours. However, the local time dependence of these enhancements is not the same in the two events. In addition, the data show that our results are consistent with the larger than normal daytime vertical drift differences observed at the magnetic equator over Jicamarca. The electron temperature is also affected during the daytime due to changes in electron density, indicating that the electron temperatures is influenced, indirectly, by changes in planetary wave activity in the lower altitudes.
| Original language | English |
|---|---|
| Article number | A00G06 |
| Journal | Journal of Geophysical Research: Space Physics |
| Volume | 115 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Jan 1 2010 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Space and Planetary Science
- Geophysics
Cite this
Quiet time ionospheric variability over Arecibo during sudden stratospheric warming events. / Chau, J. L.; Aponte, N. A.; Cabassa, E.; Sulzer, M. P.; Goncharenko, Larisa Petrovna; Gonzlez, S. A.
In: Journal of Geophysical Research: Space Physics, Vol. 115, No. 9, A00G06, 01.01.2010.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Quiet time ionospheric variability over Arecibo during sudden stratospheric warming events
AU - Chau, J. L.
AU - Aponte, N. A.
AU - Cabassa, E.
AU - Sulzer, M. P.
AU - Goncharenko, Larisa Petrovna
AU - Gonzlez, S. A.
PY - 2010/1/1
Y1 - 2010/1/1
N2 - We present observations of the F-region ionosphere over Arecibo, Puerto Rico (18.34N, 66.75W), during the January-February 2008 and January-February 2009 sudden stratospheric warming (SSW) events. For the first period (2008), we have used incoherent scatter radar (ISR) electron density and temperature measurements from the Arecibo Observatory (AO), as well as relative total electron content (TEC) derived from a dual-frequency GPS receiver. For the second event (2009), during which we observed the largest recorded stratospheric warming, we have used the relative GPS TEC. Our analysis indicates that the ionosphere over Arecibo exhibits perturbations after the SSW, the effects are most visible during the daytime. The strongest signatures are observed in the TEC measurements, represented by large enhancements (with respect to non SSW days), particularly during daytime hours. However, the local time dependence of these enhancements is not the same in the two events. In addition, the data show that our results are consistent with the larger than normal daytime vertical drift differences observed at the magnetic equator over Jicamarca. The electron temperature is also affected during the daytime due to changes in electron density, indicating that the electron temperatures is influenced, indirectly, by changes in planetary wave activity in the lower altitudes.
AB - We present observations of the F-region ionosphere over Arecibo, Puerto Rico (18.34N, 66.75W), during the January-February 2008 and January-February 2009 sudden stratospheric warming (SSW) events. For the first period (2008), we have used incoherent scatter radar (ISR) electron density and temperature measurements from the Arecibo Observatory (AO), as well as relative total electron content (TEC) derived from a dual-frequency GPS receiver. For the second event (2009), during which we observed the largest recorded stratospheric warming, we have used the relative GPS TEC. Our analysis indicates that the ionosphere over Arecibo exhibits perturbations after the SSW, the effects are most visible during the daytime. The strongest signatures are observed in the TEC measurements, represented by large enhancements (with respect to non SSW days), particularly during daytime hours. However, the local time dependence of these enhancements is not the same in the two events. In addition, the data show that our results are consistent with the larger than normal daytime vertical drift differences observed at the magnetic equator over Jicamarca. The electron temperature is also affected during the daytime due to changes in electron density, indicating that the electron temperatures is influenced, indirectly, by changes in planetary wave activity in the lower altitudes.
UR - http://www.scopus.com/inward/record.url?scp=77957602857&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77957602857&partnerID=8YFLogxK
U2 - 10.1029/2010JA015378
DO - 10.1029/2010JA015378
M3 - Article
AN - SCOPUS:77957602857
VL - 115
JO - Journal of Geophysical Research
JF - Journal of Geophysical Research
SN - 0148-0227
IS - 9
M1 - A00G06
ER -