scostep 2010 (stp12) - Leibniz-Institut für Atmosphärenphysik an der ...

More documents

Recommendations

Info

STP12 Abstracts Berlin, 12 - 16 July 2010 SCOSTEP Symposium 2010 Variability of solar activity and cosmic rays, and their influences on climate change Miyahara Hiroko 1 , Yokoyama Yusuke 1 , Yamaguchi Yasuhiko 1 , Nakatsuka Takeshi 2 , Horiuchi Kazuho 3 , Fallon Stewart 4 , Matsuzaki Hiroyuki 1 1 2 3 4 The University of Tokyo, Nagoya University, Hirosaki University, The Australian National University In this paper, we discuss the long-term variation of solar activity during the last 6000 years, based on the frequency analyses of annually measured carbon-14 content in tree rings. The long-term variations of solar activity are often reconstructed based on decadal data of cosmogenit nuclides, however, it is difficult to eliminate the variations caused by the changes in climate change, anthropogenic effect and the geomagnetic field intensity. So far, multiple scenarios for the long-term variation of solar activity level have been derived based on the data sets of cosmogenit nuclides. Our previous studies have shown that the actual length of solar decadal cycle may be another independent reference for the absolute level of solar activity. Our records obtained so far indicate that the lengths have varied within 8-15 years depending on the level of long-term solar activity. In this paper, we also discuss the variability of the flux of galactic cosmic rays at the earth related to the variation of solar magnetic activity since the Early Medieval Maximum Period. We apply the records of multiple cosmogenic nuclides with annual resolution to derive the information on the variation of incident cosmic rays in the past. The reconstructed variation of cosmic rays shows that the components of the 11-year and 22-year variations in cosmic rays vary in time depending on the long-term level of solar magnetic activity. These characteristic variations of cosmic rays have been also detected in the reconstructed northern hemispheric temperatures and the humidity change in Japan, and thus it is suggested that cosmic rays are playing important role in climate change at the hemispheric scale.
STP12 Abstracts Berlin, 12 - 16 July 2010 SCOSTEP Symposium 2010 Solar-Terrestrial Effects in the Mesosphere and Thermosphere Observed by the TIMED/SABER Instrument Mlynczak Martin 1 , Hunt Linda 2 , Mast Jeffrey 2 , Marshall B. Thomas 3 , Mertens Christopher 1 , Russell James 4 1 NASA Langley Research Center, 2 SSAI, 3 GATS, Inc., 4 Hampton University Solar-terrestrial effects in the mesosphere and thermosphere are readily observed in the data from the TIMED/SABER instrument now in orbit nearly 8.5 years. The effects are evident in the energy balance, the thermal structure, the chemical composition, and by inference, the atmospheric dynamics. Effects are evident on time scales ranging from 1 day to the 11-year solar cycle. Of particular interest is the study of the thermospheric cooling during the prolonged solar minimum and the relative response of cooling by carbon dioxide and nitric oxide. We observe the latter to have decreased by an order of magnitude in the last 8 years. During geomagnetic storm events the emission from NO may increase by an order of magnitude over a day and then rapidly revert back to pre-storm conditions. In the mesosphere the effects of solar and geomagnetic variability are less pronounced, but still quite evident, for example in cooling by carbon dioxide. In this talk we will present an overview of the solarterrestrial effects observed by SABER as well as future plans as the instrument heads towards 11 or more years of observations.
Page 1 and 2:
SCOSTEP 2010 (STP12) Berlin, 12 - 1
Page 3 and 4:
STP12 Abstracts Berlin, 12 - 16 Jul
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108: STP12 Abstracts Berlin, 12 - 16 Jul
Page 157: STP12 Abstracts Berlin, 12 - 16 Jul
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
show all

scostep 2010 (stp12) - Leibniz-Institut für Atmosphärenphysik an der ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?