diff --git a/observations/atmosphere/amsua_n19.yaml.j2 b/observations/atmosphere/amsua_n19.yaml.j2
index dba4162..c8b705d 100644
--- a/observations/atmosphere/amsua_n19.yaml.j2
+++ b/observations/atmosphere/amsua_n19.yaml.j2
@@ -34,6 +34,8 @@
   obs bias:
     input file: "{{atmosphere_obsbiasin_path}}/{{atmosphere_obsbiasin_prefix}}{{observation_from_jcb}}{{atmosphere_obsbiasin_suffix}}"
     output file: "{{atmosphere_obsbiasout_path}}/{{atmosphere_obsbiasout_prefix}}{{observation_from_jcb}}{{atmosphere_obsbiasout_suffix}}"
+    variables without bc: [brightnessTemperature]
+    channels: &{{observation_from_jcb}}_not_bias_corrected {{ get_satellite_variable(observation_from_jcb, "not_biascorrtd") }}
     variational bc:
       predictors:
       - name: constant
diff --git a/observations/atmosphere/atms_n20.yaml.j2 b/observations/atmosphere/atms_n20.yaml.j2
index c16a22c..0b22543 100644
--- a/observations/atmosphere/atms_n20.yaml.j2
+++ b/observations/atmosphere/atms_n20.yaml.j2
@@ -37,6 +37,8 @@
   obs bias:
     input file: "{{atmosphere_obsbiasin_path}}/{{atmosphere_obsbiasin_prefix}}{{observation_from_jcb}}{{atmosphere_obsbiasin_suffix}}"
     output file: "{{atmosphere_obsbiasout_path}}/{{atmosphere_obsbiasout_prefix}}{{observation_from_jcb}}{{atmosphere_obsbiasout_suffix}}"
+    variables without bc: [brightnessTemperature]
+    channels: &{{observation_from_jcb}}_not_bias_corrected {{ get_satellite_variable(observation_from_jcb, "not_biascorrtd") }}
     variational bc:
       predictors:
       - name: constant
diff --git a/observations/atmosphere/atms_npp.yaml.j2 b/observations/atmosphere/atms_npp.yaml.j2
index d18985c..bfce658 100644
--- a/observations/atmosphere/atms_npp.yaml.j2
+++ b/observations/atmosphere/atms_npp.yaml.j2
@@ -37,6 +37,8 @@
   obs bias:
     input file: "{{atmosphere_obsbiasin_path}}/{{atmosphere_obsbiasin_prefix}}{{observation_from_jcb}}{{atmosphere_obsbiasin_suffix}}"
     output file: "{{atmosphere_obsbiasout_path}}/{{atmosphere_obsbiasout_prefix}}{{observation_from_jcb}}{{atmosphere_obsbiasout_suffix}}"
+    variables without bc: [brightnessTemperature]
+    channels: &{{observation_from_jcb}}_not_bias_corrected {{ get_satellite_variable(observation_from_jcb, "not_biascorrtd") }}
     variational bc:
       predictors:
       - name: constant
diff --git a/observations/atmosphere/cris-fsr_n20.yaml.j2 b/observations/atmosphere/cris-fsr_n20.yaml.j2
index 6bea2e3..e073716 100644
--- a/observations/atmosphere/cris-fsr_n20.yaml.j2
+++ b/observations/atmosphere/cris-fsr_n20.yaml.j2
@@ -34,6 +34,8 @@
   obs bias:
     input file: "{{atmosphere_obsbiasin_path}}/{{atmosphere_obsbiasin_prefix}}{{observation_from_jcb}}{{atmosphere_obsbiasin_suffix}}"
     output file: "{{atmosphere_obsbiasout_path}}/{{atmosphere_obsbiasout_prefix}}{{observation_from_jcb}}{{atmosphere_obsbiasout_suffix}}"
+    variables without bc: [brightnessTemperature]
+    channels: &{{observation_from_jcb}}_not_bias_corrected {{ get_satellite_variable(observation_from_jcb, "not_biascorrtd") }}
     variational bc:
       predictors:
       - name: constant