|
Bias between masked and unmasked light absorption measurements |
Submitted by:
W.H. White, |
On: 10/2015 |
Doc #:
da0034 |
|
Sites: All |
Time Period:
Before 2008 |
Module/Species:
A/ Fabs |
|
Changed
reporting of light absorption |
Submitted by:
W.H. White, |
On: 09/2015 |
Doc #:
da0033 |
|
Sites: All |
Time Period:
All sample years |
Module/Species:
A/ Fabs |
|
Change
to artifact correction method for OC carbon fractions |
Submitted by:
A. M. Dillner |
On: 09/2015 |
Doc #:
da0032 |
|
Sites: All |
Time Period:
1/1/2005 - current |
Module/Species:
C/OC |
|
Changes in redelivery of 1/2005 through 5/2014 data |
Submitted by:
Xiaoya Cheng |
On: 09/2015 |
Doc #:
da0031 |
|
Sites: All |
Time Period:
1/1/2005 - 5/31/2014 |
Module/Species:
All |
|
Temporary
contamination of Columbia River A-module samples |
Submitted by:
W. H. White et al., |
On: 06/2014 |
Doc #:
da0030 |
|
Sites: CORI |
Time Period:
11/5/2011 - 7/14/2012 |
Module/Species:
A/ Zn, MF |
|
Contamination associated with new sampler shed |
Submitted by:
W. H. White et al., |
On: 06/2014 |
Doc #:
da0029 |
|
Sites: NOAB |
Time Period:
1/1/2008 - 8/16/2012 |
Module/Species:
A/ Cr, Ni |
|
Bias
between masked and unmasked light absorption measurements |
Submitted by:
W. H. White |
On: 03/2010 |
Doc #:
da0028 |
|
Sites: All |
Time Period:
Before 2008 |
Module/Species:
A/ fabs |
|
Suspect
light-absorption data from three months in 2000 |
Submitted by:
W. H. White |
On: 03/2010 |
Doc #:
da0027 |
|
Sites: All |
Time Period:
9/1/2000 - 11/30/2000 |
Module/Species:
A/ fabs |
|
Marginal
detection of heavy elements by PIXE analysis |
Submitted by:
W. H. White |
On: 03/2010 |
Doc #:
da0026 |
|
Sites: All |
Time Period:
Before 6/1/1992 |
Module/Species:
A/ Pb, Sr, Se, Rb |
|
Arcane flagging of early hydrogen and fine mass data |
Submitted by:
W. H. White |
On: 03/2010 |
Doc #:
da0025 |
|
Sites: All |
Time Period:
9/1/1990 – 2/26/1992 |
Module/Species:
A/ MF, H |
|
Under-correction of chloride concentrations for filter blank levels
- historical Advisory: Applies to downloads before 11/23/2009 |
Submitted by:
W. H. White |
On: 08/2009 |
Doc #:
da0024 |
|
Sites: All |
Time Period:
2005 - 2008 |
Module/Species:
B/ Cl |
|
Inconstant bias in XRF sulfur - Advisory Update to da0012 |
Submitted by:
W. H. White |
On: 05/2009 |
Doc #:
da0023 |
|
Sites: All |
Time Period:
All |
Module/Species:
A/ S |
|
Data
losses during episodes of heavy smoke |
Submitted by:
W. H. White |
On: 01/2009 |
Doc #:
da0022 |
|
Sites: All |
Time Period:
All |
Module/Species:
A/ MF, elements, fabs |
|
Mis-reporting of light-absorption on masked filters
- Historical Advisory: Applies to downloads before 4/17/2009 |
Submitted by:
W. H. White |
On: 09/2008
Modified on: 04/2009 |
Doc #:
da0021 |
|
Sites:
BRID1, DENA1, HALE1, HANC1, HAVO1, MEVE1, MORA1, NOAB1, NOCA1, OLYM1, PETE1,
SIME1, SNPA1, TRCR1, TUXE1, VIIS1, WEMI1, WHIT1, WHPA1, WHPE1, WHRI1, ZICA1 |
Time Period:
2005 – 2006 |
Module/Species:
A/ fabs |
|
Invalid
data for collocated (POC = 2) samples - Historical Advisory: Applies to
downloads before 4/17/2009 |
Submitted by:
W. H. White |
On: 09/2008
Modified on: 04/2009 |
Doc #: da0020 |
|
Sites:
MEVE1, OLYM1, PMRF1, SAFO1, SAMA1, TRCR1 |
Time Period:
January – July, 2005 |
Module/Species:
A/ H, Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe |
|
Bias between
masked and unmasked elemental measurements |
Submitted by:
W. H. White |
On: 07/2008 |
Doc #: da0019 |
|
Sites: Entire network |
Time Period:
evident since 2002 |
Module/Species:
A/ S |
|
Positive
interference in PIXE titanium determinations |
Submitted by:
W. H. White |
On: 03/2008 |
Doc #: da0018 |
|
Sites: Entire network |
Time Period:
Before 12/1/2001 |
Module/Species:
A/ Ti |
|
Changes in
sodium data quality |
Submitted by:
W. H. White |
On: 11/2007 |
Doc #: da0017 |
|
Sites: Entire network |
Time Period:
12/1/2001 – Present |
Module/Species:
A/ Na |
|
Shift in
EC/OC split with 1 January 2005 TOR hardware upgrade |
Submitted by:
W. H. White |
On: 10/2007 |
Doc #: da0016 |
|
Sites: Entire network |
Time Period:
1/1/2005 – Present |
Module/Species:
C/ EC, OC; OC1, OC2, OC3, OC4, OP, EC1, EC2, EC3 |
|
Change
in definition of flowrate native flags |
Submitted by:
C. McDade |
On: 9/2007 |
Doc #: da0015 |
|
Sites: Entire network |
Time Period:
1/1/2005 – Present |
Module/Species:
A, B, C/ All species |
|
Shifts in
Mo-anode XRF element calibration factors |
Submitted by:
R. Flocchini |
On: 9/2007 |
Doc #: da0014 |
|
Sites: Entire network |
Time Period:
9/2005 |
Module/Species:
A/ Ni, As, Se, Br, Rb, Pb |
|
Introduction of a second copper-anode XRF system |
Submitted by:
W. H. White |
On: 2/2007 |
Doc #: da0013 |
|
Sites: Entire network |
Time Period:
2005 – Present |
Module/Species:
A/ Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe |
|
Varying bias of
XRF sulfur relative to IC sulfate |
Submitted by:
W. H. White |
On: 1/2007 |
Doc #: da0012 |
|
Sites: Entire network |
Time Period:
2003 – 2004; maybe to earlier years |
Module/Species:
A/ S |
|
S interference
in XRF determination of Si |
Submitted by:
W. H. White |
On: 12/2006 |
Doc #: da0011 |
|
Sites: Entire network |
Time Period:
2001 - Present |
Module/Species:
A/ S,Si |
|
Elemental
concentrations of Al above the MDL can go undetected |
Submitted by:
W. H. White |
On: 11/2006 |
Doc #: da0010 |
|
Sites: Entire network |
Time Period:
entire record |
Module/Species:
A/ Al |
|
Changed
reporting of XRF sulfur |
Submitted by:
W. H. White |
On: 10/2006 |
Doc #: da0009 |
|
Sites: Entire network |
Time Period:
1/1/05 - |
Module/Species:
A/ S |
|
B-module data from Virgin Islands
|
Submitted by:
W. H. White |
On: 9/2006 |
Doc #:
da0008 |
|
Sites: VIIS |
Time Period:
6/2001 - 5/2003 |
Module/Species:
B/ CHL, NO3, SO4 |
|
1-in-6-day Cu contamination
from foreign samplers - Updated Advisory |
Submitted by:
W. H. White |
On: 9/2006
Modified on: 05/2009 |
Doc #: da0007 |
|
Sites: ATLA,
BADL, BRMA, PMRF, ROMA, others |
Time Period:
2002 - |
Module/Species:
A/ Cu |
|
High concentrations
attributable to documented wildfire |
Submitted by:
W. H. White |
On: 9/2006 |
Doc #: da0006 |
|
Sites: PORE |
Time Period:
10/12/04 |
Module/Species:
A/ K;
C/ OC EC |
|
Sporadic contamination by Zn
- Updated Advisory |
Submitted by:
W. H. White |
On: 9/2006
Modified on: 05/2009 |
Doc #: da0005 |
|
Sites:
Entire network |
Time Period:
2004 known to be affected; earlier years may have been affected |
Module/Species:
A/ Zn |
|
Significant Number of
Under Reported Sulfate Ion Concentrations Prior to 3/15/1989 |
Submitted by:
B.A. Schichtel |
On: 9/2006 |
Doc #: da0004 |
|
Sites:
Sites in the Eastern United States |
Time Period:
1992-1994 |
Module/Species:
B/ SO4 |
|
Significant Loss of Ion
Concentrations in 1998 Due to Clogging of Module B Nylon Filters |
Submitted by:
B.A. Schichtel |
On: 9/2006 |
Doc #: da0003 |
|
Sites:
Entire network |
Time Period:
6/1996 |
Module/Species:
B/ all |
|
Diminished wintertime nitrate concentrations in late 1990s |
Submitted by:
C. McDade |
On: 3/2007 |
Doc #:
da0002 |
|
Sites:
Entire network |
Time Period:
1998 |
Module/Species:|
B/ SO4 |
|
Underestimation of
Sulfur Concentrations During High Loadings and Humidity Conditions in the
Eastern US |
Submitted by:
B.A. Schichtel |
On: 11/2003 |
Doc #:
da0001 |
|
Sites:
Entire network |
Time Period:
1988 - 3/15/1989 |
Module/Species:
A/ S |
