Here is a list of all namespaces with brief descriptions:

Nagg_util	Helper class for temporarily hijacking an existing dhi to load a DDX response for one particular file
NBESConstraintFuncs
Ndap_asciival
Ndap_html_form
Ndap_usage
Nfits_handler
Nfojson
Ngateway
NHDF5CF
NHDFSP	TRMML2_V6: TRMM Level2 1B21,2A12,2B31,2A25 TRMML3A_V6: TRMM Level3 3A46 TRMML3C_V6: TRMM Level3 CSH TRMML3B_V6: TRMM Level3 3B42,3B43 CERES CER_AVG: CER_AVG_Aqua-FM3-MODIS,CER_AVG_Terra-FM1-MODIS CER_ES4: CER_ES4_Aqua-FM3_Edition1-CV CER_CDAY: CER_ISCCP-D2like-Day_Aqua-FM3-MODIS CER_CGEO: CER_ISCCP-D2like-GEO_ CER_SRB: CER_SRBAVG3_Aqua- CER_SYN: CER_SYN_Aqua- CER_ZAVG: CER_ZAVG_ OBPGL2: SeaWIFS,OCTS,CZCS,MODISA,MODIST Level2 OBPGL3: SeaWIFS,OCTS,CZCS,MODISA,MODIST Level3 m
Nlibcurl
Nlibdap	Static class NCMLUtil overview
Nncml_module	An abstract superclass for NCMLArray<T> that handles the non-parameterized functionality and allows us to treat subclasses of any type T polymorphically
Nugrid
Nw10n
Nxml_data