From c5ead8538f0002dfb0145c34311722db20ab0e93 Mon Sep 17 00:00:00 2001
From: Jiarui Dong <Jiarui.Dong@noaa.gov>
Date: Fri, 19 Jul 2024 09:32:16 -0400
Subject: [PATCH] Update the IMS pre-processing time and IMS snow data format
 (#1228)

This PR updates the IMS snow data pre-processing time from being the 18z
to the 00z cycle, and also changes to assimilate the IMS snow data in
ascii format from the operational dump.

This PR contributes to
https://github.com/NOAA-EMC/global-workflow/pull/2779
---
 parm/snow/obs/lists/gdas_snow.yaml.j2 | 2 +-
 parm/snow/prep/fims.nml.j2            | 2 +-
 parm/snow/prep/prep_ims.yaml.j2       | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/parm/snow/obs/lists/gdas_snow.yaml.j2 b/parm/snow/obs/lists/gdas_snow.yaml.j2
index 5be543389..d74b0f653 100644
--- a/parm/snow/obs/lists/gdas_snow.yaml.j2
+++ b/parm/snow/obs/lists/gdas_snow.yaml.j2
@@ -3,7 +3,7 @@ observers:
 {% include 'snow/obs/config/adpsfc_snow.yaml.j2' %}
 {% include 'snow/obs/config/snocvr_snow.yaml.j2' %}
 {% set cycle = current_cycle | strftime("t%Hz") %}
-{% if cycle in ['t18z'] %}
+{% if cycle in ['t00z'] %}
 {% include 'snow/obs/config/ims_snow.yaml.j2' %}
 {% endif %}
 {% endfilter %}
diff --git a/parm/snow/prep/fims.nml.j2 b/parm/snow/prep/fims.nml.j2
index 6f0c0efb6..57df0fe39 100644
--- a/parm/snow/prep/fims.nml.j2
+++ b/parm/snow/prep/fims.nml.j2
@@ -4,7 +4,7 @@
   otype = "{{ CASE }}_oro_data",
   jdate = "{{ current_cycle | to_julian }}",
   yyyymmddhh = "{{ current_cycle | to_YMD }}.{{ current_cycle.strftime('%H') }}",
-  imsformat = 2,
+  imsformat = 1,
   imsversion = "1.3",
   fcst_path = "{{ DATA }}/bkg/"
   IMS_OBS_PATH = "{{ DATA }}/obs/",
diff --git a/parm/snow/prep/prep_ims.yaml.j2 b/parm/snow/prep/prep_ims.yaml.j2
index 2757f6f06..0c2bbc163 100644
--- a/parm/snow/prep/prep_ims.yaml.j2
+++ b/parm/snow/prep/prep_ims.yaml.j2
@@ -2,7 +2,7 @@ calcfims:
   mkdir:
     - '{{ DATA }}/obs'
   copy:
-    - ['{{ COM_OBS }}/{{ OPREFIX }}ims{{ current_cycle | to_julian }}_4km_v1.3.nc', '{{ DATA }}/obs/ims{{ current_cycle | to_julian }}_4km_v1.3.nc']
+    - ['{{ COM_OBS }}/{{ OPREFIX }}imssnow96.asc', '{{ DATA }}/obs/ims{{ current_cycle | to_julian }}_4km_v1.3.asc']
     - ['{{ FIXgfs }}/gdas/obs/ims/IMS_4km_to_{{ CASE }}.mx{{ OCNRES }}.nc', '{{ DATA }}/obs/IMS4km_to_FV3_mapping.{{ CASE }}_oro_data.nc']
 ims2ioda:
   copy: