Tracking Cyclones Through Lightning Did Algae Prompt a Mass Extinction? Disney Princesses As Earth Scientists
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Working Group I Contribution to the Ipcc Fifth Assessment Report Climate Change 2013: the Physical Science Basis
WORKING GROUP I CONTRIBUTION TO THE IPCC FIFTH ASSESSMENT REPORT CLIMATE CHANGE 2013: THE PHYSICAL SCIENCE BASIS Final Draft Underlying Scientific-Technical Assessment A report accepted by Working Group I of the IPCC but not approved in detail. Note: The final draft Report, dated 7 June 2013, of the Working Group I contribution to the IPCC 5th Assessment Report "Climate Change 2013: The Physical Science Basis" was accepted but not approved in detail by the 12th Session of Working Group I and the 36th Session of the IPCC on 26 September 2013 in Stockholm, Sweden. It consists of the full scientific and technical assessment undertaken by Working Group I. The Report has to be read in conjunction with the document entitled “Climate Change 2013: The Physical Science Basis. Working Group I Contribution to the IPCC 5th Assessment Report - Changes to the underlying Scientific/Technical Assessment” to ensure consistency with the approved Summary for Policymakers (IPCC-XXVI/Doc.4) and presented to the Panel at its 36th Session. This document lists the changes necessary to ensure consistency between the full Report and the Summary for Policymakers, which was approved line-by-line by Working Group I and accepted by the Panel at the above- mentioned Sessions. Before publication the Report will undergo final copyediting as well as any error correction as necessary, consistent with the IPCC Protocol for Addressing Possible Errors. Publication of the Report is foreseen in January 2014. Disclaimer: The designations employed and the presentation of material on maps do not imply the expression of any opinion whatsoever on the part of the Intergovernmental Panel on Climate Change concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. -
E-Region Auroral Ionosphere Model
atmosphere Article AIM-E: E-Region Auroral Ionosphere Model Vera Nikolaeva 1,* , Evgeny Gordeev 2 , Tima Sergienko 3, Ludmila Makarova 1 and Andrey Kotikov 4 1 Arctic and Antarctic Research Institute, 199397 Saint Petersburg, Russia; [email protected] 2 Earth’s Physics Department, Saint Petersburg State University, 199034 Saint Petersburg, Russia; [email protected] 3 Swedish Institute of Space Physics, 981 28 Kiruna, Sweden; [email protected] 4 Saint Petersburg Branch of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of Russian Academy of Sciences (IZMIRAN), 199034 Saint Petersburg, Russia; [email protected] * Correspondence: [email protected] Abstract: The auroral oval is the high-latitude region of the ionosphere characterized by strong vari- ability of its chemical composition due to precipitation of energetic particles from the magnetosphere. The complex nature of magnetospheric processes cause a wide range of dynamic variations in the auroral zone, which are difficult to forecast. Knowledge of electron concentrations in this highly turbulent region is of particular importance because it determines the propagation conditions for the radio waves. In this work we introduce the numerical model of the auroral E-region, which evaluates density variations of the 10 ionospheric species and 39 reactions initiated by both the solar extreme UV radiation and the magnetospheric electron precipitation. The chemical reaction rates differ in more than ten orders of magnitude, resulting in the high stiffness of the ordinary differential equations system considered, which was solved using the high-performance Gear method. The AIM-E model allowed us to calculate the concentration of the neutrals NO, N(4S), and N(2D), ions + + + + + 4 + 2 + 2 N ,N2 , NO ,O2 ,O ( S), O ( D), and O ( P), and electrons Ne, in the whole auroral zone in the Citation: Nikolaeva, V.; Gordeev, E.; 90-150 km altitude range in real time. -
Appendix I Glossary
Appendix I Glossary Editor: A.P.M. Baede A → indicates that the following term is also contained in this Glossary. Adjustment time centrimetric precision. Altimetry has the advantage of being a See: →Lifetime; see also: →Response time. measurement relative to a geocentric reference frame, rather than relative to land level as for a →tide gauge, and of affording quasi- Aerosols global coverage. A collection of airborne solid or liquid particles, with a typical size between 0.01 and 10 µm and residing in the atmosphere for Anthropogenic at least several hours. Aerosols may be of either natural or Resulting from or produced by human beings. anthropogenic origin. Aerosols may influence climate in two ways: directly through scattering and absorbing radiation, and Atmosphere indirectly through acting as condensation nuclei for cloud The gaseous envelope surrounding the Earth. The dry formation or modifying the optical properties and lifetime of atmosphere consists almost entirely of nitrogen (78.1% volume clouds. See: →Indirect aerosol effect. mixing ratio) and oxygen (20.9% volume mixing ratio), The term has also come to be associated, erroneously, with together with a number of trace gases, such as argon (0.93% the propellant used in “aerosol sprays”. volume mixing ratio), helium, and radiatively active →greenhouse gases such as →carbon dioxide (0.035% volume Afforestation mixing ratio), and ozone. In addition the atmosphere contains Planting of new forests on lands that historically have not water vapour, whose amount is highly variable but typically 1% contained forests. For a discussion of the term →forest and volume mixing ratio. The atmosphere also contains clouds and related terms such as afforestation, →reforestation, and →aerosols. -
Opening Session
1.0 OPENING 1.1 Opening Remarks and Administrative Arrangements Pempkowiak, Burkill, Urban 1.1.1 Memorials for Scientists Involved With SCOR. p. 1-1 1.2 Approval of the Agenda—Additions or modifications to the agenda may be suggested prior to approval of the final version, p. 1-5 Burkill 1.3 Report of the SCOR President—The President will briefly review activities since the SCOR General Meeting in September 2014, p. 1-5 Burkill 1.4 Report of SCOR Executive Director, p. 1-6 Urban 1.5 Appointment of an ad hoc Finance Committee, p. 1-8 Burkill 1.6 2016 SCOR Elections for SCOR Officers, p. 1-8 Fennel 1-1 1.0 OPENING 1.1 Opening Remarks and Administrative Arrangements Pempkowiak, Burkill, Urban 1.1.1 Memorials for Scientists Involved With SCOR Burkill John Knauss John Knauss was a participant in the first International Indian Ocean Expedition. From www.legacy.com: John A. Knauss, the noted oceanographer whose research and advocacy helped raised alarms about the delicate state of the world’s oceans, died Nov. 19, according to The Associated Press. He was 90. After obtaining his bachelor's degree in meteorology from the Massachusetts Institute of Technology in 1946, where he studied as part of the United States Navy’s V-12 program, Knauss earned a master's degree in physics from the University of Michigan and a doctorate in oceanography from the Scripps Institution of Oceanography. His work quickly become pivotal to the nascent national debate on the environment and water quality, and his pioneering work as a member of the influential Stratton Commission on the report "Our Nation and the Sea: A Plan for National Action" led to the creation of the National Oceanic and Atmospheric Administration (NOAA) and the formation of the Coastal Zone Management Act. -
Nicholas L. Swanson-Hysell
Nicholas L. Swanson-Hysell Address: Department of Earth and Planetary Science University of California, Berkeley Curriculum Vitae Berkeley, CA 94720, USA Phone: (510) 542-4787 Email: [email protected] March 2020 www: swanson-hysell.org Academic Appointments Assistant Professor, Department of Earth & Planetary Science 2013 – present University of California, Berkeley NSF Earth Sciences Postdoctoral Fellow, Institute for Rock Magnetism 2012 – 2013 University of Minnesota Visiting Assistant Professor, Geology Department Carleton College 2011 Education Ph.D., Geosciences, Princeton University 2011 B.A., Geology, Carleton College, magna cum laude 2005 Honors and Awards 2020 Noyce Prize for Excellence in Undergraduate Teaching 2019 NSF CAREER Award 2016 Geological Society of America Exceptional Reviewer for Lithosphere 2015 Hellman Fellow 2014 William Gilbert Award (Geomagnetism and Paleomagnetism Section, American Geo- physical Union) 2014 American Geophysical Union Editors’ Citation for Excellence in Refereeing for Geo- physical Research Letters 2010 Harold W. Dodds Honorific Fellowship (Princeton University) 2009 Arnold Guyot Teaching Award (Princeton University) Publications in peer-reviewed journals and books (* indicates mentored student or post-doc) PDFs of these papers are available here: http://tiny.cc/Swanson-Hysell_pubs 44. Swanson-Hysell, N.L. (in revision), The Paleogeography of Laurentia for book: Ancient Supercontinents and the Paleogeography of the Earth. 43. Park, Y.*, Swanson-Hysell, N.L., Macdonald, F.M., and Lisiecki, L. (accepted; in press), Evaluating the relationship between the area and latitude of large igneous provinces and Earths long-term climate state AGU Book: Environmental Change and Large Igneous Provinces. Preprint available on EarthArXiv: 10.31223/osf.io/p9ndf. 42. Slotznick, S.P.*, Sperling, E.A., Tosca, N.J., Miller, A.J., Clayton, K., van Helmond, N.A.G.M., Slomps, C.P., and Swanson-Hysell, N.L. -
Aeronomy and Astrophysics
Aeronomy and astrophysics A southern high-latitude geomagnetic index: AES-80 C.G. MACLENNAN, Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974 P. B ALLATORE, Istito de Fisica della Spazio Interplanetario, Consiglio Nazionale della Ricerche, c.p. 27, 00044 Frascati, Rome, Italy M.J. ENGEBRETSON, Department of Physics, Augsburg College, Minneapolis, Minnesota 55454 L.J. LANZEROTTI, Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974 eomagnetic measurements obtained at McMurdo Sta- G tion (Arrival Heights) and at two of the U.S. automatic geophysical observatories (AGO-1; AGO-4) are being com- bined with measurements made at Casey and Dumont D'Urville to construct a Southern Hemisphere geomagnetic index for the geomagnetic latitude 80°S. The calculation of the index is modeled on the calculation of the Northern Hemi- sphere auroral electrojet index AE and is thus called the AES- 80 index. The AE index was developed to monitor geomagnetic activity at auroral zone latitudes in the Northern Hemisphere (Davis and Sugiura 1966) and indicates the level of auroral electrojet currents and in particular the occurrence of sub- storms (Baumjohann 1986). It is calculated as the difference between the upper (AU) and the lower (AL) envelope of mag- netograms from 12 observatories located at northern geomag- netic latitudes between 60° and 70° and rather uniformly distributed over all longitudes. Because of the land mass dis- tribution in Antarctica, it is impossible to have ground obser- vatories located uniformly at geomagnetic latitudes between 60° and 70°S (see figure 1). Unlike in the Northern Hemisphere, Figure 1. Map of Antarctica, with the stations used to calculate the however, it is possible in Antarctica to have reasonable ground AES-80 index shown as filled circles. -
UPPER ATMOSPHERE RESEARCH at INPE B.R. Clbmesha Department of Geophysics and Aeronomy Instituto De Pesquisas Espaciais
UPPER ATMOSPHERE RESEARCH AT INPE B.R. CLbMESHA Department of Geophysics and Aeronomy Instituto de Pesquisas Espaciais - INPE ABSTRACT Upper atmosphere research at INPE is mainly concerned with the chemistry and dynamics of the stratosphere, upper mesosphere and lower thermosphere, and the middle thermo- sphere. Experimental work includes lidar observations of the stratospheric aerosol, measurements of stratospheric ozone by Dobson spectrophotometers and by balloon and rocket-borne sondes, lidar measurements of atmospheric sodium, and photom- etric observations of 0, 02 , OH and Na emissions, including interferometric measurements of the 016300 emission for the purpose of determining thermospheric winds and temperature. The airglow observations also include measurements of a number of emissions produced by the precipitation of ener- getic neutral particles generated by charge exchange in the ring current. Some recent results of INPE's upper atmosphere program are presented.ii» this paper. ' ' n/ .71. 1- INTRODUCTION INPK maintains an active program of research into a number of aspects of upper atmosphere science, including both experimental and theoretical studies of the dynamics and chemistry of the stratosphere, mesosphere and lower thermosphere. Hxperimental work involves mainly ground-based optical techniques, although balloon and rocket-borne sondes are used for studies of stratospheric ozone, and a rocket-borne photometer payload is under development for measurements of a number of emissions from the thermosphere. Theoretical studies include numerical model- ling with special reference to a number of minor constituents related to the experimental measurements. In the following sec- tions we present a brief description of INPE's experimental fa- cilities in the area of upper atmosphere science, and outline some recent results. -