From d34b870a595ea0b87a57ea559b3f8fcf3445c0c5 Mon Sep 17 00:00:00 2001
From: Sebastien Villaume <sebastien.villaume@ecmwf.int>
Date: Wed, 15 May 2024 11:45:23 +0100
Subject: [PATCH] ECC-1821 adding configurations for mmsf/an

---
 definitions/mars/grib.mmsf.an.def | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 definitions/mars/grib.mmsf.an.def

diff --git a/definitions/mars/grib.mmsf.an.def b/definitions/mars/grib.mmsf.an.def
new file mode 100644
index 000000000..c002f9d76
--- /dev/null
+++ b/definitions/mars/grib.mmsf.an.def
@@ -0,0 +1,26 @@
+if (levtype is "o2d" || levtype is "o3d") {
+   alias mars.step = stepRange;
+} else {
+   alias mars.step = endStep;
+}
+
+if (class is "od") { alias mars.system = systemNumber; }
+if (class is "me") { alias mars.system = systemNumber; }
+if (class is "en") { alias mars.system = systemNumber; }
+if (class is "c3") { alias mars.system = systemNumber; }
+if (class is "ci") { alias mars.system = systemNumber; }
+alias mars.number = perturbationNumber;
+alias mars.method = methodNumber;
+
+if (!(class is "gw")) { # ECC-1448
+    alias mars.origin = centre;
+}
+
+# See ECC-624
+if (centre == 80 && subCentre == 98 && class is "c3") {
+  constant cnmc_cmcc = 'cmcc';
+  alias mars.origin = cnmc_cmcc;
+}
+
+if (class is "ci") { unalias mars.method; }
+