scholarly journals Current Status of a NASA High-Altitude Balloon-Based Observatory for Planetary Science

2015 ◽  
Author(s):  
Denise Varga ◽  
Eliot Young
Keyword(s):  
High Altitude ◽  
Planetary Science ◽  
Current Status

High-altitude vegetation of the Western Carpathians — a syntaxonomical review

Biologia ◽  
2010 ◽  
Vol 65 (6) ◽  
Author(s):  
Ján Kliment ◽  
Jozef Šibík ◽  
Ivana Šibíková ◽  
Ivan Jarolímek ◽  
Zuzana Dúbravcová ◽  
...  
Keyword(s):  
High Altitude ◽  
Plant Communities ◽  
Floristic Composition ◽  
Western Carpathians ◽  
The Arctic ◽  
Current Status ◽  
High Mountain ◽  
Vegetation Survey ◽  
Fourth Volume ◽  
The Individual

AbstractThis paper presents a survey of high-altitude plant communities which occur in the Western Carpathians with an enumeration of the characteristic, transgressive and differential species of the individual alliances, orders and classes. It describes the tall-herb vegetation (Mulgedio-Aconitetea) and communities of the subalpine shrubs (Betulo carpaticae-Alnetea viridis), the montane and alpine calcareous swards (Elyno-Seslerietea), the wind-exposed cryophilous swards on ridge edges with low snow cover (Carici rupestris-Kobresietea bellardii), the chionophilous communities of snow beds and snow fields (Salicetea herbaceae), the arctic-boreal dwarf-shrub heathlands (Loiseleurio-Vaccinietea), the alpine acidophilous grasslands (Caricetea curvulae) and the high-mountain mat-grass swards of the alliance Nardion strictae (Nardetea strictae).This study summarises the results of the syntaxonomical and nomenclatural revisions of various types of high-altitude vegetation in the Western Carpathians and the longstanding research in the field. The aim of this paper is to amass knowledge about the nomenclatural features, such as the synonyms, original diagnoses and nomenclatural types of the higher syntaxa in the Western Carpathians, that will be important and useful for a forthcoming vegetation survey of highrank syntaxa of Europe (EuroChecklist). It reflects the current status of knowledge regarding the floristic composition and distribution of high-altitude (alpine) non-forest communities in Slovakia.The fourth volume of Plant Communities of Slovakia, which discusses high-altitude vegetation, was recently published. This paper, however, contains some corrections and improvements to the concepts. It is presented in a compact form and in English, which makes it more accessible by international readership.

The Rosetta Science Archive: Closing Out the Science Content

2020 ◽  
Author(s):  
David Heather ◽  
Diego Fraga ◽  
Laurence O'Rourke ◽  
Matt Taylor
Keyword(s):  
Laboratory Data ◽  
Three Dimensional ◽  
Planetary Science ◽  
Current Status ◽  
Science Content ◽  
Science Data ◽  
Data Set ◽  
Environment Maps ◽  
Almost All ◽  
Key Aspects

<p>On 30 September 2016, Rosetta completed its mission by landing on comet 67P/Churyumov-Gerasimenko. Although this marked an end to the spacecraft’s operations, intensive work has continued for several years, with the instrument teams updating their data in response to scientific reviews and delivering them to ESA’s Planetary Science Archive (PSA). ESA has also been working with the instrument teams to produce new and enhanced data, and to improve documentation, aiming to provide the best long-term archive possible for the Rosetta mission.</p><p>All teams have now completed their nominal science data deliveries from the comet phase, and samples of final data from the enhanced archiving activities went through a last science review in September 2019. The aim is to to complete any updates requested and deliver final products in the first half of 2020.</p><p>As soon as Rosetta’s operational mission ended, ESA established a number of activities with the Rosetta instrument teams to allow them to continue working on enhancing their archive content. The updates were focused on key aspects of an instrument’s calibration or the production of higher level data / information, and were therefore specific to each instrument. Most activities are now complete, but a few are still in the process of being closed in early 2020.</p><p>Almost all instrument teams have now provided a Science User Guide for their data, which have been highly appreciated by the scientists in the recent reviews. Many teams have also updated their calibrations to deliver higher level and/or derived products. For example, OSIRIS have delivered data with improved calibrations, as well as straylight corrected, I/F corrected, and three-dimensional georeferenced products. These are all already available in the archive. They now also provide their data additionally in FITS format, and have added quicklook (browse) versions of their products to allow an end-user to more easily identify the images they may be interested in. Internal straylight data and boresight corrected / full frame data are currently in preparation and will be added to the archive early this year.</p><p>Similarly, the VIRTIS team will update both their spectral and geometrical calibrations, and deliver mapping products to the final archive. The Rosetta Plasma Consortium instruments completed several cross-calibrations and a number of activities individual to each instrument, as well as producing illumination maps of the comet. The MIDAS team have produced a dust particle catalog from the comet coma. GIADA have produced dust environment maps with omni-directional products. COSIMA has delivered laboratory data to help understand their inflight measurements. An activity is also ongoing to produce data set(s) containing supporting ground-based observations of the comet.</p><p>The Rosetta ESA archiving team are also producing calibrated data for the NAVCAM instrument, and will include the latest shape models from the comet in the final Rosetta archive. Work is also underway to incorporate the radiation monitor (SREM) and spacecraft housekeeping (MUST) data into the archive.</p><p>This presentation will outline the current status of the Rosetta archive, and highlight the work being done this year to close out the archive and prepare it for legacy use.</p>

The Current Status of JPL’s SmallSat Developments

2021 ◽  
Author(s):  
Peter Kahn
Keyword(s):  
Concurrent Engineering ◽  
Earth Science ◽  
Planetary Science ◽  
Current Status ◽  
Big Science ◽  
Jet Propulsion ◽  
Small Spacecraft ◽  
Current State ◽  
Key Technologies ◽  
Jet Propulsion Laboratory

<p>Abstract -The Jet Propulsion Laboratory (JPL) has been at the forefront of finding ways to deliver big science returns in small packages.  This talk will describe the current state of missions and capabilities across the mission lifecycle from early concept formulation and implementation through on-orbit operations.  From examining how we use concurrent engineering tools, processes and teams for the development of small instruments as well as complete missions, this talk will focus on expanding the capabilities of science using small spacecraft to enable missions for Planetary Science, Astrophysics, Heliophysics and Earth Science. Highlighted key technologies and science measurements will be described.</p>

NOMAD on ExoMars TGO: Data processing and public release via the ESA Planetary Science Archive

2020 ◽  
Author(s):  
Ian Thomas ◽  
Ann Carine Vandaele ◽  
Frank Daerden ◽  
Bojan Ristic ◽  
Yannick Willame ◽  
...  
Keyword(s):  
Data Processing ◽  
Scientific Community ◽  
Planetary Science ◽  
Trace Gas ◽  
Current Status ◽  
Solar Occultation ◽  
Enormous Amount ◽  
Uv Visible ◽  
Occultation Data ◽  
Very High

<p>NOMAD is a suite of three spectrometers on-board the ExoMars Trace Gas Orbiter. The spectrometers operate in solar occultation, nadir and limb observing modes, measuring in the infrared (2.2-4.3um in occultation; 2.2-3.8um in nadir) and UV-visible (0.2-0.65um) spectral regions. The nominal science phase began on 21st April 2018; since then NOMAD has collected over one Martian year of data.<br><br>Due to the very high spectral and spatial resolution of NOMAD, an enormous amount of data has already been generated - including tens of millions of solar occultation and nadir spectra - which currently total around four terabytes and are spread across almost half a million files. To serve the scientific community, all calibrated data will eventually be made publicly available in PDS4 format via the ESA Planetary Science Archive at <br><br>At the time of writing, the NOMAD data collection has successfully passed peer review, and data from two of the three channels will be available very shortly. This first release will consist of: 1) infrared solar occultation data; 2) UV-visible solar occultation data; and 3) UV-visible nadir data. The infrared nadir and infrared and UV-visible limb data will be released later, once the calibration is finalised. In this presentation I will update the scientific community on the current status of the NOMAD PSA archive, including a description of the data and how to start using it.</p><!-- COMO-HTML-CONTENT-END --> <p class="co_mto_htmlabstract-citationHeader"> <strong class="co_mto_htmlabstract-citationHeader-intro">How to cite:</strong> Thomas, I., Vandaele, A. C., Daerden, F., Ristic, B., Willame, Y., Depiesse, C., Aoki, S., Trompet, L., Erwin, J., Robert, S., Piccialli, A., Neary, L., Viscardy, S., Mason, J., Patel, M., Bellucci, G., and Lopez-Moreno, J. J.: NOMAD on ExoMars TGO: Data processing and public release via the ESA Planetary Science Archive, Europlanet Science Congress 2020, online, 21 September–9 Oct 2020, EPSC2020-521, 2020 </p>

Current status of special planetary and lunar theories and ephemerides

1966 ◽  
Vol 25 ◽  
pp. 266-267
Author(s):  
R. L. Duncombe
Keyword(s):  
Observational Data ◽  
Current Status ◽  
Numerical Errors

An examination of some specialized lunar and planetary ephemerides has revealed inconsistencies in the adopted planetary masses, the presence of non-gravitational terms, and some outright numerical errors. They should be considered of temporary usefulness only, subject to subsequent amendment as required for the interpretation of observational data.

Contrast of Filament Bright Rims

1994 ◽  
Vol 144 ◽  
pp. 365-367
Author(s):  
E. V. Kononovich ◽  
O. B. Smirnova ◽  
P. Heinzel ◽  
P. Kotrč
Keyword(s):  
High Altitude ◽  
Line Profile ◽  
Line Center ◽  
Magnetic Structures ◽  
The Mean

AbstractThe Hα filtergrams obtained at Tjan-Shan High Altitude Observatory near Alma-Ata (Moscow University Station) were measured in order to specify the bright rims contrast at different points along the line profile (0.0; ± 0.25; ± 0.5; ± 0.75 and ± 1.0 Å). The mean contrast value in the line center is about 25 percent. The bright rims interpretation as the bases of magnetic structures supporting the filaments is suggested.

Clean Electron Microscope Substrate Films Used for Micrometeorite Collection and Study

1967 ◽  
Vol 25 ◽  
pp. 366-367
Author(s):  
D. M. Davies ◽  
R. Kemner ◽  
E. F. Fullam
Keyword(s):  
Thin Film ◽  
Electron Microscope ◽  
High Altitude ◽  
Amyl Acetate ◽  
Temperature Variations ◽  
Film Forming ◽  
Film Specimen ◽  
Particulate Contaminants

All serious electron microscopists at one time or another have been concerned with the cleanliness and freedom from artifacts of thin film specimen support substrates. This is particularly important where there are relatively few particles of a sample to be found for study, as in the case of micrometeorite collections. For the deposition of such celestial garbage through the use of balloons, rockets, and aircraft, the thin film substrates must have not only all the attributes necessary for use in the electron microscope, but also be able to withstand rather wide temperature variations at high altitude, vibration and shock inherent in the collection vehicle's operation and occasionally an unscheduled violent landing.Nitrocellulose has been selected as a film forming material that meets these requirements yet lends itself to a relatively simple clean-up procedure to remove particulate contaminants. A 1% nitrocellulose solution is prepared by dissolving “Parlodion” in redistilled amyl acetate from which all moisture has been removed.

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