From 8f74fe478ba1f552be2e263c32a1415f04a0c3bf Mon Sep 17 00:00:00 2001 From: ligiabernardet Date: Fri, 30 Jul 2021 12:14:25 -0600 Subject: [PATCH 1/2] Clarification wrt mixing ratios. --- StandardNamesRules.rst | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/StandardNamesRules.rst b/StandardNamesRules.rst index ae2d7af..68746d5 100644 --- a/StandardNamesRules.rst +++ b/StandardNamesRules.rst @@ -56,6 +56,15 @@ CCPP Standard Name Rules representing quantities at the interface between grid cells vertically, use at_interface. +#. By default, *mixing_ratio* refers to mass mixing ratios. Volume mixing ratios should be + qualified as *volume_mixing_ratio*. Mass mixing ratios should contain information regarding + with respect to what quantity they are defined, and options are *wrt_dry_air*, *wrt_moist_air*, + or *wrt_total_mass*, where *moist_air* refers to dry air plus vapor and *total_mass* refers + to dry air plus vapor and hydrometeors. A special case exists in the case of mixing ratio + of vapor: the standard name *specific_humidity* should be used instead of + *mixing_ratio_of_vapor_wrt_moist_air*. When referring to soil quantities, + *volume_fraction* should be used to express the volumetric soil moisture. + #. If possible, qualifiers should be limited in order to allow for a wide applicability of the variable. In other words, don't qualify with _for ``_xyz`` unless a variable could not conceivably be used outside of the more @@ -253,7 +262,6 @@ Prefixes | **index_of** | **vertical_index_at** | **vertical_dimension_of** -| **volumetric** | **cumulative** | **iounit_of** | **filename_of** @@ -438,7 +446,7 @@ standard names. +-------------------------------------------+-----------------+ | mass_fraction | 1 | +-------------------------------------------+-----------------+ -| mass_mixing_ratio | 1 | +| mixing_ratio | kg kg-1 | +-------------------------------------------+-----------------+ | mass_transport k | g s-1 | +-------------------------------------------+-----------------+ @@ -478,6 +486,8 @@ standard names. +-------------------------------------------+-----------------+ | volume_fraction | 1 | +-------------------------------------------+-----------------+ +| volume_mixing_ratio | mol mol-1 | ++-------------------------------------------+-----------------+ | volume_transport | m3 s-1 | +-------------------------------------------+-----------------+ | vorticity | s-1 | From afed7be8664bb7ccb7314cc5c14905e3ecbe54f0 Mon Sep 17 00:00:00 2001 From: ligiabernardet Date: Mon, 2 Aug 2021 17:01:02 -0600 Subject: [PATCH 2/2] Clarifications regarding mixing ratio and number concentration. --- StandardNamesRules.rst | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/StandardNamesRules.rst b/StandardNamesRules.rst index 68746d5..3f0f14e 100644 --- a/StandardNamesRules.rst +++ b/StandardNamesRules.rst @@ -56,15 +56,24 @@ CCPP Standard Name Rules representing quantities at the interface between grid cells vertically, use at_interface. -#. By default, *mixing_ratio* refers to mass mixing ratios. Volume mixing ratios should be - qualified as *volume_mixing_ratio*. Mass mixing ratios should contain information regarding +#. By default, *mixing_ratio* refers to mass mixing ratios. The long name should + explicitly specify that it refers to the *mass* mixing ratio. + Mass mixing ratios should contain information regarding with respect to what quantity they are defined, and options are *wrt_dry_air*, *wrt_moist_air*, or *wrt_total_mass*, where *moist_air* refers to dry air plus vapor and *total_mass* refers to dry air plus vapor and hydrometeors. A special case exists in the case of mixing ratio of vapor: the standard name *specific_humidity* should be used instead of - *mixing_ratio_of_vapor_wrt_moist_air*. When referring to soil quantities, + *mixing_ratio_of_vapor_wrt_moist_air*. + +#. Volume mixing ratios should be qualified as *volume_mixing_ratio*. + +#. When referring to soil quantities, *volume_fraction* should be used to express the volumetric soil moisture. +#. Number concentration should appear as a prefix, that is, *number_concentration_of*. By default, + number concentrations are specified per unit of volume. When they are specified per + unit of mass, they should be written as *mass_number_concentration_of*. + #. If possible, qualifiers should be limited in order to allow for a wide applicability of the variable. In other words, don't qualify with _for ``_xyz`` unless a variable could not conceivably be used outside of the more