Recent glacier decline in the Kerguelen Islands (49°S, 69°E) derived from modeling, field observations, and satellite data

Uncertainty estimates are needed to assess ocean color products and qualify the agreement between missions. Comparison between field observations and satellite data, a process defined as validation, has been the traditional way to assess satellite products. However validation statistics can provide only an approximation for satellite data uncertainties as field measurements have their own uncertainties and as the validation process is imperfect, comparing data potentially differing in temporal, spatial or spectral characteristics. This study describes a method to interpret in terms of uncertainties the validation statistics obtained for ocean color remote sensing reflectance RRS knowing the uncertainties associated with field data. This approach is applied to observations collected at sites part of the Ocean Color component of the Aerosol Robotic Network (AERONET-OC) located in coastal regions of the European seas, and to RRS data from the VIIRS sensors on-board the SNPP and JPSS1 platforms. Similar estimates of uncertainties σVRS (term accounting for non-systematic contributions to the uncertainty budget) are obtained for both missions, decreasing with wavelength from the interval 0.8–1.4 10−3 sr−1 in the blue to a maximum of 0.24 10−3 sr−1 in the red, values that are at least twice (but up to 8 times) the uncertainties reported for the field data. These uncertainty estimates are then used to qualify the agreement between the VIIRS products, defining the extent to which they agree within their stated uncertainty. Despite significant biases between the two missions, their RRS products appear fairly compatible.

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Application of Satellite Data to Monitoring Snow Cover and Runoff in Greenland

Hydrology Research ◽

10.2166/nh.1988.0015 ◽

1988 ◽

Vol 19 (4) ◽

pp. 225-236 ◽

Cited By ~ 4

Author(s):

Henrik Søgaard ◽

Thorkild Thomsen

Keyword(s):

Snow Cover ◽

Satellite Data ◽

Power Production ◽

Field Observations ◽

Drainage Basins ◽

Simulation Data ◽

Hydrological Simulation ◽

Hydro Power ◽

Degree Day ◽

Noaa Avhrr

Based on NOAA-AVHRR satellite data and runoff records from one of the major drainage basins in Western Greenland methods for monitoring snow cover, snowpack water equivalent and runoff have been elaborated and evaluated by use of field observations and hydrological simulation. Data from six years and more than 40 satellite scenes have been used in the analysis. A procedure for snow cover mapping in areas with alpine relief is presented, and it is shown that the snowpack water equivalent can be derived by applying either a hydrological simulation or a degree-day approach. Finally, the applicability of the results with respect to hydro-power production in Greenland is discussed.

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Modelling planktic foraminifer growth and distribution using an ecophysiological multi-species approach

Biogeosciences ◽

10.5194/bg-8-853-2011 ◽

2011 ◽

Vol 8 (4) ◽

pp. 853-873 ◽

Cited By ~ 63

Author(s):

F. Lombard ◽

L. Labeyrie ◽

E. Michel ◽

L. Bopp ◽

E. Cortijo ◽

...

Keyword(s):

Satellite Data ◽

Light Availability ◽

Food Concentration ◽

Individual Growth ◽

Global Ocean ◽

Biogeochemical Model ◽

Model Parameters ◽

Field Observations ◽

Lower Efficiency ◽

Data Set

Abstract. We present an eco-physiological model reproducing the growth of eight foraminifer species (Neogloboquadrina pachyderma, Neogloboquadrina incompta, Neogloboquadrina dutertrei, Globigerina bulloides, Globigerinoides ruber, Globigerinoides sacculifer, Globigerinella siphonifera and Orbulina universa). By using the main physiological rates of foraminifers (nutrition, respiration, symbiotic photosynthesis), this model estimates their growth as a function of temperature, light availability, and food concentration. Model parameters are directly derived or calibrated from experimental observations and only the influence of food concentration (estimated via Chlorophyll-a concentration) was calibrated against field observations. Growth rates estimated from the model show positive correlation with observed abundance from plankton net data suggesting close coupling between individual growth and population abundance. This observation was used to directly estimate potential abundance from the model-derived growth. Using satellite data, the model simulate the dominant foraminifer species with a 70.5% efficiency when compared to a data set of 576 field observations worldwide. Using outputs of a biogeochemical model of the global ocean (PISCES) instead of satellite images as forcing variables gives also good results, but with lower efficiency (58.9%). Compared to core tops observations, the model also correctly reproduces the relative worldwide abundance and the diversity of the eight species when using either satellite data either PISCES results. This model allows prediction of the season and water depth at which each species has its maximum abundance potential. This offers promising perspectives for both an improved quantification of paleoceanographic reconstructions and for a better understanding of the foraminiferal role in the marine carbon cycle.

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Field observations on the use of a progesterone-releasing intravaginal device to induce estrus and ovulation in seasonally anestrous mares

Journal of Equine Veterinary Science ◽

10.1053/jevs.2002.37276 ◽

2002 ◽

Vol 22 (9) ◽

pp. 378-382

Author(s):

John R. Newcombe

Keyword(s):

Field Observations ◽

Intravaginal Device

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On Methodology for Designing Architectural Lighting of Production Site Interior

Light & Engineering ◽

10.33383/2019-102 ◽

2020 ◽

pp. 10-21 ◽

Cited By ~ 1

Author(s):

Vladimir V. Voronov ◽

Nikolay I. Shchepetkov

Keyword(s):

Architectural Design ◽

Comprehensive Approach ◽

Scientific Methodology ◽

Field Observations ◽

Production Site ◽

Artificial Illumination ◽

Engineering Parameters ◽

Architectural Lighting ◽

Candidate Thesis

The article describes content of original and relevant but virtually forgotten thesis of V.V. Voronov on lighting of production site interiors by means of overhead natural (using three types of skylights) and artificial illumination, in order to elaborate scientific methodology for architectural design of more qualitative luminous environment on the basis of comprehensive approach and enhanced criteria framework of its evaluation using light engineering parameters. The thesis is unique in terms of the scope and quality of field and laboratory observations which are reflected not only in the text but also in the graphical attachments, namely photos, figures, schemes, drawings, charts, nomograms, and diagrams accompanied by specific measured or calculated parameters. The first part of the thesis contains theoretical basics and results of field observations conducted by different methods. This second part is the exposition of chapter 3 of the V.V. Voronov’s candidate thesis (1985). It describes the methodology for and the results of the experiments by means of planar and volumetric light simulation using the architectural lighting simulating assembly (chamber) which were conducted in MARKHI in 1970–1985.

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Concerning the Concept of Light-Colour Arrangement of the Urban Environment in the Central Part of Tyumen

Light & Engineering ◽

10.33383/2019-033 ◽

2020 ◽

pp. 34-42

Author(s):

Nikolay I. Shchepetkov ◽

Svetlana B. Kapeleva ◽

Denis V. Bugaev ◽

Gregory S. Matovnikov ◽

Anna S. Kostareva

Keyword(s):

Urban Environment ◽

Comprehensive Analysis ◽

Assessment Criteria ◽

Field Observations ◽

General Plan ◽

Design Solutions ◽

Methodological Principles ◽

The City

The article provides a comprehensive analysis of outdoor lighting in the central part of Tyumen (with consideration of conducted field observations) and prospects of its development on the basis of the general plan of illumination of the central part of the city being under design. Main provisions of this general plan as well as methodological principles and assessment criteria of design solutions illustrat-ed by photographs, schemes and visualisations of the illuminated objects are described.

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IMPLEMENTASI KURIKULUM BERBASIS INDUSTRI DI SMK MITRA INDUSTRI MM2100 CIKARANG - BEKASI

Jurnal Manajemen Pendidikan ◽

10.33751/jmp.v8i2.2760 ◽

2020 ◽

Vol 8 (2) ◽

pp. 81-88

Author(s):

Bambang Nurcahyono ◽

Rita Retnowati ◽

Entis Sutisna

Keyword(s):

Curriculum Development ◽

Learning Process ◽

Qualitative Method ◽

Process Approach ◽

Development Model ◽

Field Observations ◽

Work Patterns ◽

Block System ◽

Comprehensive Picture ◽

Dual Base

INDUSTRIAL BASED CURRICULUM IMPLEMETATION AT SMK MITRA INDUSTRI MM2100 CIKARANG-BEKASIThis study aims to obtain a fact-based picture in the form of data and information regarding the implementation of an industry-based curriculum at SMK Mitra Industri MM2100. This study uses a qualitative method, which is to make a complex and comprehensive picture with detailed descriptions from the eyes of the informants to produce a comprehensive exposure based on clear and real findings, events, processes and results related to the implementation of an industry-based curriculum. Data obtained through interviews, field observations and documentation studies. Based on data analysis, the following results are obtained: 1). The curriculum development model used at SMK Mitra Industri MM2100, is a model of curriculum development that is problem-centered by integrating several disciplines to form a concept of attitudes, skills and knowledge in accordance with the demands and needs of the industry which are oriented to the vision, mission and goals of the school. 2). The learning process at SMK Mitra Industri MM2100 uses a block system, which is designed to be oriented towards the merging of instruction and construction, so that the learning process approach refers to the dual base program to fully and fully cultivate industrial work patterns. 3). Challenges and obstacles in the implementation of industrial-based curriculum in SMK Mitra Industri MM2100 in the form of not wanting to change the principles of school/mental blockage, focusing on knowledge, school target is focus on graduation of students, not on the distribution of work at industries and bad networking with industry which can be overcome through socialization to all elements of the school and stakeholders involved.

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