Local-Scale Observation Site (LSOS) Snow Measurements

1. Local-Scale Observation Site (LSOS) Snow Measurements Janet Hardy, ERDC-CRREL 28 May 2003 February 2002 - IOP1 March 2002 - IOP2 February 2003 - IOP3 March 2003 - IOP4

2. Tim Link & Richard Essery John Pomeroy Danny Marks Aled Rowlands Co-Investigators

3. Snow Pit Measurements 2002 - 2003 • Three Snow Pits per day. • Dense pine • Open pine • Clearing • Same protocol, same tools… plus wetness.

4. 100 90 Open Pine 23-Feb-02 80 27-Mar-02 30-Mar-02 70 60 50 Snow Depth (cm) 40 30 20 Dense Pine 10 0 1 17 33 49 65 81 97 129 177 113 145 161 193 209 225 241 257 273 289 Point Snow Depth Surveys – 2002IOP 1 and IOP 2

5. Snow Depth and SWE Surveys 2003IOP 3 and IOP 4 • Three Snow Depth Surveys • February 19th – 20th • March 24th –25th • March 28th • Four SWE Surveys • February 19th – 20th • February 23rd • March 26th • March 30th

6. Snow Depth Transects 2003

7. SWE Transects 2003 Standard Deviation Bars

8. SWE? Wetness? Density? Grain Size? Model Development and Validation Scaling of Processes, Measurements and Models Potential Applications for High Resolution Snow Data at LSOS