AVHRR data processing to study the surface canopies in temperate regions First results of HAPEX-MOBELHY

1989 ◽  
Vol 10 (4-5) ◽  
pp. 869-884 ◽  
Author(s):  
T. PHULPIN ◽  
J. P. JULLIEN ◽  
D. LASSELIN
2020 ◽  
Author(s):  
Torsten Schmidt ◽  
Patrick Schreiner ◽  
Byron Iijima ◽  
Chi Ao

<p>An objective of the GRACE-FO mission is the continuation of GRACE radio occultation measurements successfully performed between 2006 and 2017.</p> <p>GRACE and GRACE-FO radio occultations contribute to the overall radio occultation dataset used in weather and climate applications.</p> <p>Since mid-2019 rising occultations from GF1 are available while setting radio occultations from GF2 are still disabled. After several on-board software updates and raw data reader improvements about 280 daily GF1 radio occultations are available since March 2020.</p> <p>Currently GF1 radio occultation data are processed on the basis of different measured variables: For different GPS satellites a combination of L1CA/L2P, L1CA/L2C, or L1CA/L5 is available.</p> <p>In this study first results of GF1 processing are presented. Refractivity and temperature data up to an altitude of 60 km will be compared with ECMWF operational analyses and the quality of the different measured variables will be evaluated.</p>


2020 ◽  
Vol 132 (1008) ◽  
pp. 025001 ◽  
Author(s):  
Kishalay De ◽  
Matthew J. Hankins ◽  
Mansi M. Kasliwal ◽  
Anna M. Moore ◽  
Eran O. Ofek ◽  
...  

1999 ◽  
Vol 17 (4) ◽  
pp. 729-740 ◽  
Author(s):  
I.V. ALEKSANDROVA ◽  
E.R. KORESHEVA ◽  
I.E. OSIPOV ◽  
V.I. GOLOV ◽  
V.I. CHTCHERBAKOV

Determining the cryogenic target parameters with high precision calls for the development of a new direction in the area of target characterization based on microtomography methods of data processing. In this report we present our first results in this area.


2006 ◽  
Vol 37 (12) ◽  
pp. 2166-2171 ◽  
Author(s):  
R. Hollmann ◽  
R.W. Mueller ◽  
A. Gratzki

Author(s):  
Wataru TAKEUCHI ◽  
Toshihiro NEMOTO ◽  
Shiro OCHI ◽  
Yoshifumi YASUOKA

2002 ◽  
Vol 45 (2) ◽  
pp. 147-152 ◽  
Author(s):  
T. Einfalt ◽  
K. Arnbjerg-Nielsen ◽  
S. Spies

Rain data are collected all over the world because water is of paramount importance to all human life. WMO has provided standards for collection and standardized data processing of daily rainfall measurements. Currently no such standards are available for gauges with a resolution suitable for urban hydrology, where the resolution in time must not exceed a few minutes. The Group on Urban Rainfall under the International Water Association has made a comparison of national standards by means of a survey of 77 questions sent to 44 countries. The paper discusses the first results of the answers of the survey. Currently tipping bucket gauges are the dominating method of obtaining high resolution rain data, but the numbers of weighing gauges and radar measurements are rapidly growing. It is necessary to try to increase the awareness of documentation of current standards and to agree on standards for measurements and data processing on an international level in the future.


2009 ◽  
Vol 5 (S261) ◽  
pp. 337-341
Author(s):  
Alberto Vecchiato ◽  
Ummi Abbas ◽  
Beatrice Bucciarelli ◽  
Mario G. Lattanzi ◽  
Roberto Morbidelli

AbstractGaia will estimate the astrometric and physical data of approximately one billion objects. The core of this process, the global sphere reconstruction, is represented by the reduction of a subset of these objects, which will constitute the largest and most precise catalog of absolute astrometry in the history of Astronomy, and will put General Relativity to test by estimating the PPN parameter γ with unprecedented accuracy. As the Hipparcos mission showed, and as it is natural for all kind of absolute measurements, possible errors in the data reduction can hardly be identified at the end of the processing, and can lead to systematic errors in all the works which will use these results. In order to avoid such kind of problems, a Verification Unit was established by the Gaia Data Processing and Analysis Consortium (DPAC). One of its jobs is to implement and perform an independent global sphere reconstruction, parallel to the baseline one, to compare the two results, and to report any significant difference.


2020 ◽  
Author(s):  
Stephen Patrick Palm ◽  
Yuekui Yang ◽  
Ute Christina Herzfeld ◽  
David W Hancock ◽  
Adam N Hayes ◽  
...  

2006 ◽  
Vol 54 (5) ◽  
pp. 441-455 ◽  
Author(s):  
M. Parrot ◽  
D. Benoist ◽  
J.J. Berthelier ◽  
J. Błęcki ◽  
Y. Chapuis ◽  
...  

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