Mobile Instrumented Sensor Platform (MISP) spectroradiometer data, Barrow, Alaska, 2017

The International Tundra Experiment (ITEX) was chartered in 1990 to
test the effects of increased temperature on tundra plant phenology,
growth, species composition and ecosystem function. Since 2007, the
ITEX-Arctic Observatory Network (ITEX-AON) has continued and expanded
on the ITEX program across a latitudinal transect of five sites in
Alaska and Greenland, collecting core ITEX data specifically designed
to address the current needs outlined in the Study of Environmental
Arctic Change (SEARCH) Implementation Report. The goal of this effort
is to maintain the continuity of the temporally-critical datasets of
the ITEX-AON in Alaska and Greenland. Core datasets include the
long-term manual observations of phenology, vegetation structure and
composition, ecosystem function, and surface properties on the
long-term ITEX control and experimental warming plots, repeat
measurement of the vegetation plots on the 1
km 2 Arctic Systems Science (ARCSS) grids, and a multifactor
warming-moisture experiment in Greenland. The simultaneous measurement
of multiple surface properties at the small scale has allowed
detection of relationships not previously recognized, e.g., in
moss-dominated areas of the intensive transects, higher albedo is
linked to higher temperatures. This data package includes spectroradiometer data from the Mobile Instrumented Sensor Platform (MISP), formerly known as the Networked Info-mechanical Systems (NIMS).