History of Network Changes

Listing of all changes to the IMPROVE monitoring network including changes in filter analysis, data corrections and monitoring site locations.

This list is compiled and maintained by the UC Davis Group    

 

Date Event
6/1/1990 MORA1 sampler moved from outside to inside a shelter.
9/19/1990 ROMO1 moved 15 miles SE of original site. Renamed ROMO2
1/16/1991 Changed WASH1 mask size from 2.2 to 3.5
1/23/1991 Changed SOLA1 mask size from 2.2 to 3.5
5/20/1992 GRSA moved from shelter to outside.
7/19/1992 GRSM1 moved from outside to inside a shelter
10/1/1992 BADL1 climate control was turned of permanently.
6/28/1994 Changed nylon filter size from 47mm diameter to 25mm.
8/18/1994 Moved ACAD1 from outdoors to indoors 150 yards
3/29/1995 The SEQU1 site had construction in the vicinity of the sampler from
10/1/1993 thru Oct 1994. This is evidenced in the databy the high soil and organic
4/19/1995 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for DOSO1,GRSM1,SHEN1,JEFF1
4/22/1995 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for SAGO1
4/26/1995 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for ACAD1,LYBR1,SHRO1,MACA1
5/3/1995 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for SIPS1,UPBU1
5/10/1995 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for BRIG1
6/1/1996 Added glycerine to the denuders
7/1/1996 YELL1 moved 1 mile to the North and increased the elevation by 200ft.
10/1/1996 Changed nylon filter manufactures from Gelman to MSI
3/20/1997 GRSM1 moved into a new shelter.
6/1/1997 NH4+ species taken by IC off the nylon filter at DOSO1,GRSM1 & SHEN1
6/9/1997 SIPS1 moved to a new shelter on the original site after the original she
7/25/1997 MACA1 moved 7 miles to the SouthWest
10/1/1997 INGA1: Tree close to the sampler was cut down to ensure clear path
3/21/1998 VIIS1 Added modules BCD to a new A module. All samplers built by ARS
5/27/1998 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for SEQU1
6/3/1998 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for PUSO1
7/13/1998 Creation of History.txt
7/29/1998 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for MOOS1
8/4/1998 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for CHAS1,OKEF1,ROMA1,
10/1/1998 Moved BRLA1 into a shelter on the original site
10/29/1998 ACAD1 built new shelter on original site
2/9/1999 ROMO2 climate control in the shelter was turned off permanently
2/16/1999 Moved ROMA1 50 yards in the original shelter
4/17/2001 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for CACR1
4/25/2001 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for HEGL1,GUMO1,BIBE1
5/16/2001 Sample area changed from 2.2 sq. cm to 3.5 sq. cm for WIMO1