# ``cdom_s275_295``
## Properties
:dimensions: N_PROF, N_LEVELS
:dtype: float64
## Default Attributes
| Attribute | Value |
|-----|-----|
|``whp_name`` | ``CDOM-S275-295`` |
|``whp_unit`` | ``1/NM`` |
|``units`` | ``1/nm`` |
|``C_format`` | ``%9.4f`` |
|``C_format_source`` | ``database`` |
## Description
Spectral slope computed by linear regression of log-transformed attenuation coefficients in the interval 275 to 295 nm. By convention, this slope is reported as positive because the data are being fit to an exponential decay function (equation 1 in Helms et al. 2008).

Helms, J. R., Stubbins, A., Ritchie, J. D., Minor, E. C., Kieber, D. J., & Mopper, K. (2008). Absorption spectral slopes and slope ratios as indicators of molecular weight, source, and photobleaching of chromophoric dissolved organic matter. Limnology and Oceanography, 53(3), 955–969. https://doi.org/10.4319/lo.2008.53.3.0955