GTN-P - Strategy and Implementation Plan 2016-2020

Permafrost is recognized as Essential Climate Variable (ECV) within the Global Climate Observing System of UN and ICSU organisations. The Global Terrestrial Network for Permafrost (GTN-P) is the primary international programme concerned with long-term monitoring of permafrost. The core mission of the GTN-P is sustained comprehensive long-term monitoring network, in order to provide consistent, representative and high quality standardized long-term data series of selected permafrost parameters at key sites and to assess their state and changes over time. The Strategy and Implementation Plan 2016-2020 outlines recent progress and future challenges facing the network. It describes the governance and management structure of GTN-P, linkages to regional and global observing systems, management process and reporting strategies. It presents measurement methods and protocols used in field data collection and state of the art data management system, which was recently designed and implemented to process, analyse, and visualize permafrost data. It concludes with the outlook of the future developments of the network in order to sustain and succeed its core mission of providing long-term observations and maintain the availability of data collected

Registadores automáticos de baixo-custo para a monitorização de temperaturas do ar, da rocha e do solo

LOW-COST DATA LOGGERS FOR AIR, SOIL AND ROCK TEMPERATURE MONITORING -Tiny Talk II data loggers were adapted in the laboratory of the Centro de Estudos Geográficos for air, soil and rock temperature monitoring. The loggers are single-channel 8 bit devices with a 2K EEPROM memory that allows the registration of 1,800 temperature records at user-defined intervals. Temperatures are measured by NTC100 thermistors separated by the authors from the data logger for more accurate measurements. Data is transfered from the loggers into a portable computer using a RS-232 cable. It is a low-cost system very appropriate for use in rough environmental conditions, particularly in mountain areas. It is successfully tested by the authors in the Antartic, Pyrenees, Sierra Nevada and Serra da Estrela.The detailed procedures for the construction of three measuring systems are described. The air temperature apparatus is constructed using PVC tubing and protecting cases and is designed for the measurement of air temperatures at 130cm above the ground. The soil temperature monitoring apparatus measures temperatures at 1, 5, 10 and 20cm depth and is based in 4 data loggers protected from moisture and dust in an IP68 case. The rock temperature measuring system is similar to the latter but the sensors are installed in the interior of the rock and isolated using silicon glue