CREST-Snow Analysis and Field Experiment

Welcome to CREST-SAFE Website

The CREST-Snow Analysis and Field Experiment (CREST-SAFE) is being carried out every winter seasons from 2010. The field experiment site is located at 46°52'00.9N and 68°00'47.9W on the premises of Caribou Municipal Airport and National Weather Service office at Caribou, ME. Caribou with a humid continental climate, offers the ideal conditions for snow studies, the normal seasonal snowfall for Caribou is approximately 116 inches (2.9 m). The record snowfall for Caribou is 197.8 inches (5.02 m) set in the winter of 2007-2008.

Field observation data include synoptic/meteorological parameters, radiation fluxes and measured microwave emission (brightness temperature) at 10, 19, 37 and 89 GHz, vertical and horizontal polarization. In addition to dual polarized microwave radiometers, the field experiment site equipped with Gamma radiation sensor (to measure Snow Water Equivalent), CIMEL Sunphotometer, ultrasonic snow depth sensor, Infrared Thermometer (for Snow skin temperature), Net Radiation Sensors, Humidity, Temperature, snow temperature profiler (measures temperature at every 5 cm of snow layer), snow grain size, density, and network camera for real time remote monitoring of the site.

The objective of this long term field experiment was to characterize the behavior of snow-emitted microwave radiation throughout the winter season.  The principal issue in this experiment is that the ground microwave observations are collocated and are conducted synchronously with detailed observations of snowpack properties. . The effect of snowpack temperature (related to dry and wet snow conditions) on the microwave brightness temperature will be examined and interpreted. 

* In spring 2014 observations of snow water equivalent with a gamma-ray sensor have been added.
* Fall 2014: 10.65 and 19 GHz dual polarized microwave Radiometer is added to site.
* A funding (270K) is approved by DoD through DURIP program to buy sun-photometer and 10.65, 19 GHz radiometers to upgrade instrumentations at CREST-SAFE site for snow research.
* CUNY team discussed research collaboration with University of Maine at Presque Isle (UMPI) ME. A CUNY research team discusses the National Oceanic and Atmospheric Administration [NOAA] funded research that an UMPI student has been helping them to conduct. Link