Abstract Models of the temporal gravity field derived from space missions are typically produced with monthly resolution and ∼300‐km spatial resolution. However, variations in instrument performance altitude Gravity Recovery Climate Experiment (GRACE) mission impact that can be achieved month‐to‐month. As orbits twin spacecraft vary throughout mission, so does ability observations to recover ce...

This paper explores the political dynamics by which a health reform leader state--Florida--engineered an ambitious reorganization of state health agencies as an expected prelude to bolder policy measures before the end of 1994. Demographic and fiscal pressures spurred the state to action, but its success at innovation demands a political explanation. This narrative highlights Florida's patient ...

Ionospheric tomography using GPS data has been reported in the literature and even the application to radar altimeter calibration was succesfully carried out in a recent work ( [1]). We here present a new software tool, called Global Ionospheric Stochastic Tomography software (GIST), and its powerful capability for ingesting GPS data from different sources (ground stations, receivers on board L...

Aims. We present observations of the Orion Bar photodissociation region (PDR) obtained with the SPIRE instrument on-board Herschel. Methods. We obtained SPIRE Fourier-transform spectrometer (FTS) sparse sampled maps of the Orion bar. Results. The FTS wavelength coverage and sensitivity allow us to detect a wealth of rotational lines of CO (and its isotopologues), fine structure lines of C and N...

The purpose of this study is to evaluate the practical contribution of a VHF radar to high time resolution automatic temperature profiling both for research and operational applications in the frame of an integrated system of ground-based remote-sensing instruments. Based on the most prominent results already mentioned about this instrumentation, different techniques, related to the temperature...

Turbulence in the earth’s atmosphere severely limits the resolution and sensitivity of astronomical observations. The vertical distribution of turbulence in the atmosphere has a profound effect on the residuals after correction by an active instrument such as adaptive optics or a fringe tracking interferometer. It has already been shown that the South Pole has turbulence profiles unlike those a...

Let Sn be the set of all permutations on [n] := {1, 2, . . . , n}. We denote by κn the smallest cardinality of a subset A of Sn+1 that “covers” Sn, in the sense that each π ∈ Sn may be found as an order-isomorphic subsequence of some π′ in A. What are general upper bounds on κn? If we randomly select νn elements of Sn+1, when does the probability that they cover Sn transition from 0 to 1? Can w...

Constellation-to-ground coverage analysis is an important problem in practical satellite applications. The classical net point method one of the most commonly used algorithms resolving this problem, indicating that computation efficiency significantly depends on high-precision requirement. On basis, improved cell area-based proposed paper, which a as basic analytical unit. By calculating accura...

The relationships between the spatial locations and attributes of trees and the abundance of individual ground vegetation species, were studied on a large database from the 1985-86 National Forest Inventory of Finland. The influence potential, derived from ecological field theory, was used as an index to quantify the effect of a tree species, and the percentage cover was applied as a measure of...

Aims. We present observations of the Orion Bar photodissociation region (PDR) obtained with the SPIRE instrument on-board Herschel. Methods. We obtained SPIRE Fourier-transform spectrometer (FTS) sparse sampled maps of the Orion bar. Results. The FTS wavelength coverage and sensitivity allow us to detect a wealth of rotational lines of CO (and its isotopologues), fine structure lines of C and N...