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Sun, 16 Feb 2020 20:46:33 +0000
China has quietly rolled out a new Long March 7A rocket at a coastal launch site in preparation for launch of a ‘technology verification satellite’. SpaceNews.com
Sun, 16 Feb 2020 14:42:14 +0000
The Commerce Department is once again requesting a large budget increase for its Office of Space Commerce in order to work on space traffic management activities after Congress rejected a similar request last year. SpaceNews.com
Sat, 15 Feb 2020 22:00:44 +0000
A Cygnus cargo spacecraft launched Feb. 15 carrying more than three tons of supplies and experiments for the International Space Station. SpaceNews.com
Sat, 15 Feb 2020 14:20:10 +0000
NASA awarded a contract to Rocket Lab Feb. 14 for the launch of a cubesat mission that will serve as a precursor for the agency’s planned lunar Gateway. SpaceNews.com
Fri, 14 Feb 2020 22:55:11 +0000
As Astra prepares for its first orbital launch attempt, the company is setting expectations accordingly and taking the long view towards its goal of frequent, low-cost access to space. SpaceNews.com
Fri, 14 Feb 2020 19:30:37 +0000
DirecTV’s Spaceway-1 satellite has been retired to a graveyard orbit 500 kilometers above the geostationary arc, eliminating the risk of the malfunctioning satellite exploding in an orbit populated by active satellites.  SpaceNews.com
Fri, 14 Feb 2020 11:59:43 +0000
NASA is considering missions to Venus and two outer solar system moons as the next in its Discovery line of planetary science missions. SpaceNews.com
Fri, 14 Feb 2020 10:14:11 +0000
Virgin Galactic’s SpaceShipTwo suborbital spaceplane arrived at the company’s spaceport in New Mexico Feb. 13, ready for a final series of test flights before the company starts commercial operations. SpaceNews.com
Fri, 14 Feb 2020 08:57:18 +0000
The White House has added the Secretary of Energy and two other officials to the roster of members of the National Space Council. SpaceNews.com
Fri, 14 Feb 2020 01:26:41 +0000
Astranis said it would use the new money to finish its first satellite, a broadband “MicroGEO” satellite that will deliver internet to Alaska.  SpaceNews.com
Fri, 14 Feb 2020 00:10:38 +0000
Chief Master Sgt. Roger Towberman will serve as the first senior enlisted advisor of the U.S. Space Force. SpaceNews.com
Thu, 13 Feb 2020 23:55:37 +0000
NASA’s fiscal year 2021 budget request proposes cancelling an airborne observatory, a move that has surprised many astronomers but is also not the first time the project has faced termination. SpaceNews.com
Thu, 13 Feb 2020 23:31:20 +0000
Brig. Gen. D. Jason Cothern will replace Brig. Gen. Donna Shipton, as vice commander of the Space and Missile Systems Center SpaceNews.com
Thu, 13 Feb 2020 18:30:22 +0000
The U.S. Space Force is looking for ideas on names, ranks and names for operational units SpaceNews.com
Thu, 13 Feb 2020 15:47:07 +0000
Northrop Grumman won a $253.5 million payload development contract under the Protected Tactical Satellite Communications program. SpaceNews.com
Thu, 13 Feb 2020 13:00:57 +0000
Iceye, the Finnish radar satellite operator, opened a U.S. office in the San Francisco Bay Area led by Mark Matossian, who managed a series of aerospace programs at Google including the Earth-imaging venture Terra Bella. SpaceNews.com
Thu, 13 Feb 2020 12:13:18 +0000
The FAA’s commercial space office is seeking a modest budget increase in fiscal year 2021 as it also works on a reorganization and revision of commercial launch regulations. SpaceNews.com
Thu, 13 Feb 2020 01:07:56 +0000
Sigmatech will provide “architecture and integration support for Air Force space systems and programs." SpaceNews.com
Wed, 12 Feb 2020 23:35:02 +0000
National Guard officials said a Space National Guard should be established as soon as possible as a reserve component to the U.S. Space Force. SpaceNews.com
Wed, 12 Feb 2020 23:03:01 +0000
The Japan Aerospace Exploration Agency (JAXA) has selected Astroscale to send a spacecraft into orbit to inspect a discarded Japanese rocket upper stage, a step that would pave the way for a debris-removal  mission.  SpaceNews.com
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    Personal information
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    Candidate Profile
     Date Submitted:01-11-2012
     Last Modified:02-11-2012 (08:14)
    Job information
     Current job:Research Assistant
     Employment Term:Temp/Contract
     Job location:Own country
     Date available:within a month
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Satellite Operators, , , Launch Systems, Business Services
     KeywordsSatellite, Remote Sensing, Matlab, IDL, ENVI, Imaging, Sensor, Orbit
    CV

    EDUCATION

     

    2012 – Present , Ph.D Candidate, Atmospheric Science, University of Houston

    2010 – 2011, M.S., Space Architecture (Summa Cum Laude), University of Houston

    Thesis: Lunar Radio Telescope and Future Astronomy Analysis on the Moon’s Far Side

    2006 – 2010 , B.S., Physics, Stephen F. Austin State University

     

     

    RESEARCH INTEREST

    1. Cassini Observations of Jupiter and Saturn

    The multi-filter images from the Imaging Science Subsystem (ISS) on board Cassini are utilized to explore the vortex behavior on Saturn during the time period of 2004-2011 (starting in northern winter, moving through equinox, into northern spring). Our exploration is concentrated in the northern hemisphere, which is a follow-up study of the vortex survey in the southern hemisphere (Vasavada et al., 2006). We mainly utilize ISS images from two filters (i.e., MT3 and CB2), which probe the pressure levels around the tropopause and upper troposphere, respectively. Our exploration based on the maps in 2005 and 2008 suggests that there are significantly different vortex behaviors (i.e., size, spatial distribution, and vertical structure) between the two hemispheres. We are exploring more global maps after Saturn’s spring equinox (August, 2009) to see if there are seasonal effects on the vortex behavior. Comparisons between Saturn and Jupiter can then be drawn, and models can be extended to exoplanet research.

    2. Io - Proposal

    Io is the most geologically dynamic body in the Solar System. Its surface is covered with active volcanoes (the largest in the Solar System) with plume heights in excess of 400 km above Io's surface [e.g. 1]. High temperature lavas on Io resemble Archaean-aged komatiite lavas on Earth [2], and eruptions on Io are similar in scale to those of ancient terrestrial, Martian and Venusian flood basalts [3]. Volcanism is a key geological process, and Ionian volcanism could be a potential laboratory for investigating early volcanic episodes and evolution on terrestrial planets.

    Based on the most recent planetary science decadal survey [4] and New Opportunities in Solar System Exploration (NOSSE) report [5], an Io Observer mission was included in the 2009 New Frontiers Announcement of Opportunity [6]. The decadal survey called for the Io Observer to focus on determining Io’s internal structure and to investigate the mechanisms contributing to its extensive volcanic activity. The recommended mission payload consisted of a narrow angle imager, thermal mapper, ion and neutral mass spectrometer, and a flux gate magnetometer. Here we propose an additional instrument that would enhance our understanding of Io—a dust analyzer—which would be capable of determining the composition of dust grains in Io's atmosphere and volcanic plumes, providing direct and indirect analysis of Io's volcanic activity as well as insights into Io's formation, interior and surface structure, and atmosphere.

     

    3. Evapotranspiration estimation of almond and pistachio orchards using the MODIS/ASTER Airborne Simulator (MASTER)

    The MODIS/ASTER Airborne Simulator (MASTER) was used to estimate the evapotranspiration (ET) of almond and pistachio orchards in southern California using a variety of remote sensing models including the Vegetation Index Trapezoid (VIT) method, and SEBAL and METRIC ET models. Additional inputs were acquired using the California Irrigation Management Information System (CIMIS) online weather station data for potential evapotranspiration calculations and leaf area index (LAI) data from hemispherical photography. Comparisons were made to both the CIMIS potential and reference ET, field data of crop water stress, soil moisture, the VIT method, and between the two different ET models SEBAL and METRIC. Differences in ET between the two models were minimal with a strong linear relationship. The ET results suggest little water stress in the almond and pistachio crops one to four days since watered. However, calculations using the measured data with the Thornthwaite potential ET equations and IPCC local climate change models suggest that the same amount of irrigation water would maintain a ~75% of current crop area.

     

    RESEARCH EXPERIENCE

    JPL – Planetary Science Summer School (PSSS), Team X, May 2011 – June 2011

    *Io orbiter mission proposal – Structures and Science Lead – Atmosphere and Magnetosphere

    University of Houston  Department of Geoscience, Research Assistant, 2012 - Present

    *Researching vortex structure and convection storms on Saturn using Matlab and IDL (outlined above)

    Boeing - Research Assistant, 2010-2011

    *Conducting research with Boeing on Martian lander designs and SEP vehicle usage.

    Houston Museum of Natural Science - Research Assistant, 2010-2011

    *Design of lunar habitat and structures using 3D Studio Max

    NASA/NSERC  Research Assistant, June 2011- August 2011

    *Worked with airborne remote sensing equipment on board NASA’s DC-8, and other satellites. Thermal Infrared (TIR) calibration of various data sets.

     

    TEACHING EXPERIENCE

    Teaching Assistant - AST 105: General Astronomy Spring/Fall 2009

     

    ACADEMIC AWARDS AND HONORS

    Freshman and Sophomore Academic Scholarship – Stephen F. Austin State University

    Master’s of Science, Space Architecture – Summa Cum Laude – University of Houston

     

    CONFERENCES/TALKS

    Trammell, H.J., Seasonal Changes in Vortex Behavior on Saturn, Division of Planetary Scinece (DPS), American Astronomical Society (AAS), October 18th, 2012, Reno, NV, USA.

    Trammell, H.J., Thermal Infrared Calibration and Systems Analysis, NASA’s SARP, July 2011. Irvine, CA, USA.

    Trammell, H.J., Lunar Radio Astronomy, 62nd International Astronautical Congress, Oct. 2011. Cape Town, South Africa.

    Trammell, H.J., Thermal Infrared Calibration and Satellite Systems Analysis, Stephen F. Austin State University, Dec 2011. Nacogdoches, TX, USA.

     

    PUBLICATIONS

    Li, L., K. H. Baines, M. A. Smith, R. A. West, S. Pérez-Hoyos, H. J. Trammell, A. Simon-Miller, B. Conrath, P. J. Gierasch, G. S. Orton, C. A. Nixon, G. Filacchione, P. M. Fry, and T. W. Momary. Emitted power of Jupiter based on Cassini CIRS and VIMS observations. J. Geophys. Res., doi:10.1029/2012JE004191, 2012. In press.

    Kefauver, S.C., Davey, S., Furey, B., Gartner, A., Kurzweil, D., Siebach, K., Slawsky, L., Snyder, E., Trammell, H.J., Young, J., Ustin, S. Estimation of evapotranspiration in almond and pistachio orchards using the MODIS/ASTER Airborne Simulator (MASTER). Photogrammetric Engineering and Remote Sensing. 2012. Under Review.

    Trammell, H.J. Feasibility Study of Radio Telescope Array and Future Astronomy Analysis on the Moon’s Far Side. 2011. SARA Journal, Oct/Nov 2011 pp. 14-21.


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